In [1]:
import numpy as np
import xarray as xr

In [2]:
ds=xr.open_dataset('wrfout_v2_Lambert.nc')

In [3]:
ds


Out[3]:
<xarray.Dataset>
Dimensions:           (Time: 13, bottom_top: 27, bottom_top_stag: 28, ext_scalar: 1, soil_layers_stag: 5, south_north: 60, south_north_stag: 61, west_east: 73, west_east_stag: 74)
Coordinates:
  * Time              (Time) int64 0 1 2 3 4 5 6 7 8 9 10 11 12
  * bottom_top        (bottom_top) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * bottom_top_stag   (bottom_top_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 ...
  * ext_scalar        (ext_scalar) int64 0
  * soil_layers_stag  (soil_layers_stag) int64 0 1 2 3 4
  * south_north       (south_north) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * south_north_stag  (south_north_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 ...
  * west_east         (west_east) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * west_east_stag    (west_east_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 ...
Data variables:
    Times             (Time) |S19 b'2000-01-24_12:00:00' ...
    LU_INDEX          (Time, south_north, west_east) float32 16.0 16.0 16.0 ...
    U                 (Time, bottom_top, south_north, west_east_stag) float32 -1.06967 ...
    V                 (Time, bottom_top, south_north_stag, west_east) float32 -13.5656 ...
    W                 (Time, bottom_top_stag, south_north, west_east) float32 -0.0 ...
    PH                (Time, bottom_top_stag, south_north, west_east) float32 0.0 ...
    PHB               (Time, bottom_top_stag, south_north, west_east) float32 0.0 ...
    T                 (Time, bottom_top, south_north, west_east) float32 -12.4883 ...
    MU                (Time, south_north, west_east) float32 1876.56 1849.13 ...
    MUB               (Time, south_north, west_east) float32 95000.0 95000.0 ...
    P                 (Time, bottom_top, south_north, west_east) float32 1969.13 ...
    PB                (Time, bottom_top, south_north, west_east) float32 99525.0 ...
    FNM               (Time, bottom_top) float32 0.0 0.454545 0.461539 ...
    FNP               (Time, bottom_top) float32 0.0 0.545455 0.538461 ...
    RDNW              (Time, bottom_top) float32 -100.0 -83.3332 -71.4286 ...
    RDN               (Time, bottom_top) float32 0.0 -90.909 -76.923 -62.5 ...
    DNW               (Time, bottom_top) float32 -0.00999999 -0.012 -0.014 ...
    DN                (Time, bottom_top) float32 0.0 -0.011 -0.013 -0.016 ...
    ZNU               (Time, bottom_top) float32 0.995 0.984 0.971 0.955 ...
    ZNW               (Time, bottom_top_stag) float32 1.0 0.99 0.978 0.964 ...
    CFN               (Time, ext_scalar) float32 1.48276 1.48276 1.48276 ...
    CFN1              (Time, ext_scalar) float32 -0.482759 -0.482759 ...
    EPSTS             (Time, ext_scalar) float32 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ...
    Q2                (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    T2                (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    TH2               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    PSFC              (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    U10               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    V10               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    RDX               (Time, ext_scalar) float32 3.33333e-05 3.33333e-05 ...
    RDY               (Time, ext_scalar) float32 3.33333e-05 3.33333e-05 ...
    RESM              (Time, ext_scalar) float32 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ...
    ZETATOP           (Time, ext_scalar) float32 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ...
    CF1               (Time, ext_scalar) float32 1.87121 1.87121 1.87121 ...
    CF2               (Time, ext_scalar) float32 -1.22377 -1.22377 -1.22377 ...
    CF3               (Time, ext_scalar) float32 0.352563 0.352563 0.352563 ...
    ITIMESTEP         (Time, ext_scalar) int32 0 20 40 60 80 100 120 140 160 ...
    QVAPOR            (Time, bottom_top, south_north, west_east) float32 0.00818111 ...
    QCLOUD            (Time, bottom_top, south_north, west_east) float32 0.0 ...
    QRAIN             (Time, bottom_top, south_north, west_east) float32 0.0 ...
    LANDMASK          (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    TSLB              (Time, soil_layers_stag, south_north, west_east) float32 295.446 ...
    ZS                (Time, soil_layers_stag) float32 0.005 0.02 0.05 0.11 ...
    DZS               (Time, soil_layers_stag) float32 0.01 0.02 0.04 0.08 ...
    SMOIS             (Time, soil_layers_stag, south_north, west_east) float32 0.0 ...
    SH2O              (Time, soil_layers_stag, south_north, west_east) float32 0.0 ...
    XICE              (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    SFROFF            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    UDROFF            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    IVGTYP            (Time, south_north, west_east) int32 16 16 16 16 16 16 ...
    ISLTYP            (Time, south_north, west_east) int32 14 14 14 14 14 14 ...
    VEGFRA            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    GRDFLX            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    SNOW              (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    SNOWH             (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    CANWAT            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    SST               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    MAPFAC_M          (Time, south_north, west_east) float32 1.00902 1.00909 ...
    MAPFAC_U          (Time, south_north, west_east_stag) float32 1.00898 ...
    MAPFAC_V          (Time, south_north_stag, west_east) float32 1.00967 ...
    F                 (Time, south_north, west_east) float32 6.85757e-05 ...
    E                 (Time, south_north, west_east) float32 0.000128712 ...
    SINALPHA          (Time, south_north, west_east) float32 -0.0523758 ...
    COSALPHA          (Time, south_north, west_east) float32 0.998627 ...
    HGT               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    TSK               (Time, south_north, west_east) float32 295.446 295.454 ...
    P_TOP             (Time, ext_scalar) float32 5000.0 5000.0 5000.0 5000.0 ...
    RAINC             (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    RAINNC            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    SWDOWN            (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    GLW               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    XLAT              (Time, south_north, west_east) float32 28.0481 28.0335 ...
    XLONG             (Time, south_north, west_east) float32 -93.8044 ...
    TMN               (Time, south_north, west_east) float32 295.446 295.454 ...
    XLAND             (Time, south_north, west_east) float32 2.0 2.0 2.0 2.0 ...
    PBLH              (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    HFX               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    QFX               (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    LH                (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
    SNOWC             (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 ...
Attributes:
    TITLE:  OUTPUT FROM WRF V2.0 MODEL
    START_DATE: 2000-01-24_12:00:00
    WEST-EAST_GRID_DIMENSION: 74
    SOUTH-NORTH_GRID_DIMENSION: 61
    BOTTOM-TOP_GRID_DIMENSION: 28
    GRIDTYPE: C
    DYN_OPT: 2
    DIFF_OPT: 0
    KM_OPT: 1
    DAMP_OPT: 0
    KHDIF: 0.0
    KVDIF: 0.0
    MP_PHYSICS: 3
    RA_LW_PHYSICS: 1
    RA_SW_PHYSICS: 1
    SF_SFCLAY_PHYSICS: 1
    SF_SURFACE_PHYSICS: 1
    BL_PBL_PHYSICS: 1
    CU_PHYSICS: 1
    WEST-EAST_PATCH_START_UNSTAG: 1
    WEST-EAST_PATCH_END_UNSTAG: 73
    WEST-EAST_PATCH_START_STAG: 1
    WEST-EAST_PATCH_END_STAG: 74
    SOUTH-NORTH_PATCH_START_UNSTAG: 1
    SOUTH-NORTH_PATCH_END_UNSTAG: 60
    SOUTH-NORTH_PATCH_START_STAG: 1
    SOUTH-NORTH_PATCH_END_STAG: 61
    BOTTOM-TOP_PATCH_START_UNSTAG: 1
    BOTTOM-TOP_PATCH_END_UNSTAG: 27
    BOTTOM-TOP_PATCH_START_STAG: 1
    BOTTOM-TOP_PATCH_END_STAG: 28
    DX: 30000.0
    DY: 30000.0
    DT: 180.0
    CEN_LAT: 34.8316
    CEN_LON: -81.0276
    TRUELAT1: 30.0
    TRUELAT2: 60.0
    MOAD_CEN_LAT: 34.8316
    STAND_LON: -98.0
    GMT: 12.0
    JULYR: 2000
    JULDAY: 24
    ISWATER: 16
    ISICE: 24
    ISURBAN: 1
    ISOILWATER: 14
    MAP_PROJ: 1
    MMINLU: USGS

In [4]:
ds.dims


Out[4]:
Frozen(SortedKeysDict({'bottom_top': 27, 'west_east': 73, 'west_east_stag': 74, 'bottom_top_stag': 28, 'south_north_stag': 61, 'Time': 13, 'ext_scalar': 1, 'south_north': 60, 'soil_layers_stag': 5}))

This data has nine dimensions


In [5]:
ds.data_vars


Out[5]:
Data variables:
    Times      (Time) |S19 b'2000-01-24_12:00:00' b'2000-01-24_13:00:00' ...
    LU_INDEX   (Time, south_north, west_east) float32 16.0 16.0 16.0 16.0 ...
    U          (Time, bottom_top, south_north, west_east_stag) float32 -1.06967 ...
    V          (Time, bottom_top, south_north_stag, west_east) float32 -13.5656 ...
    W          (Time, bottom_top_stag, south_north, west_east) float32 -0.0 ...
    PH         (Time, bottom_top_stag, south_north, west_east) float32 0.0 ...
    PHB        (Time, bottom_top_stag, south_north, west_east) float32 0.0 ...
    T          (Time, bottom_top, south_north, west_east) float32 -12.4883 ...
    MU         (Time, south_north, west_east) float32 1876.56 1849.13 ...
    MUB        (Time, south_north, west_east) float32 95000.0 95000.0 ...
    P          (Time, bottom_top, south_north, west_east) float32 1969.13 ...
    PB         (Time, bottom_top, south_north, west_east) float32 99525.0 ...
    FNM        (Time, bottom_top) float32 0.0 0.454545 0.461539 0.4375 ...
    FNP        (Time, bottom_top) float32 0.0 0.545455 0.538461 0.5625 ...
    RDNW       (Time, bottom_top) float32 -100.0 -83.3332 -71.4286 -55.5555 ...
    RDN        (Time, bottom_top) float32 0.0 -90.909 -76.923 -62.5 -47.6191 ...
    DNW        (Time, bottom_top) float32 -0.00999999 -0.012 -0.014 -0.018 ...
    DN         (Time, bottom_top) float32 0.0 -0.011 -0.013 -0.016 -0.021 ...
    ZNU        (Time, bottom_top) float32 0.995 0.984 0.971 0.955 0.934 ...
    ZNW        (Time, bottom_top_stag) float32 1.0 0.99 0.978 0.964 0.946 ...
    CFN        (Time, ext_scalar) float32 1.48276 1.48276 1.48276 1.48276 ...
    CFN1       (Time, ext_scalar) float32 -0.482759 -0.482759 -0.482759 ...
    EPSTS      (Time, ext_scalar) float32 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ...
    Q2         (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    T2         (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    TH2        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    PSFC       (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    U10        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    V10        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    RDX        (Time, ext_scalar) float32 3.33333e-05 3.33333e-05 ...
    RDY        (Time, ext_scalar) float32 3.33333e-05 3.33333e-05 ...
    RESM       (Time, ext_scalar) float32 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ...
    ZETATOP    (Time, ext_scalar) float32 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ...
    CF1        (Time, ext_scalar) float32 1.87121 1.87121 1.87121 1.87121 ...
    CF2        (Time, ext_scalar) float32 -1.22377 -1.22377 -1.22377 ...
    CF3        (Time, ext_scalar) float32 0.352563 0.352563 0.352563 ...
    ITIMESTEP  (Time, ext_scalar) int32 0 20 40 60 80 100 120 140 160 180 ...
    QVAPOR     (Time, bottom_top, south_north, west_east) float32 0.00818111 ...
    QCLOUD     (Time, bottom_top, south_north, west_east) float32 0.0 0.0 ...
    QRAIN      (Time, bottom_top, south_north, west_east) float32 0.0 0.0 ...
    LANDMASK   (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    TSLB       (Time, soil_layers_stag, south_north, west_east) float32 295.446 ...
    ZS         (Time, soil_layers_stag) float32 0.005 0.02 0.05 0.11 0.23 ...
    DZS        (Time, soil_layers_stag) float32 0.01 0.02 0.04 0.08 0.16 ...
    SMOIS      (Time, soil_layers_stag, south_north, west_east) float32 0.0 ...
    SH2O       (Time, soil_layers_stag, south_north, west_east) float32 0.0 ...
    XICE       (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    SFROFF     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    UDROFF     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    IVGTYP     (Time, south_north, west_east) int32 16 16 16 16 16 16 16 16 ...
    ISLTYP     (Time, south_north, west_east) int32 14 14 14 14 14 14 14 14 ...
    VEGFRA     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    GRDFLX     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    SNOW       (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    SNOWH      (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    CANWAT     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    SST        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    MAPFAC_M   (Time, south_north, west_east) float32 1.00902 1.00909 ...
    MAPFAC_U   (Time, south_north, west_east_stag) float32 1.00898 1.00905 ...
    MAPFAC_V   (Time, south_north_stag, west_east) float32 1.00967 1.00974 ...
    F          (Time, south_north, west_east) float32 6.85757e-05 ...
    E          (Time, south_north, west_east) float32 0.000128712 ...
    SINALPHA   (Time, south_north, west_east) float32 -0.0523758 -0.0561481 ...
    COSALPHA   (Time, south_north, west_east) float32 0.998627 0.998422 ...
    HGT        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    TSK        (Time, south_north, west_east) float32 295.446 295.454 ...
    P_TOP      (Time, ext_scalar) float32 5000.0 5000.0 5000.0 5000.0 5000.0 ...
    RAINC      (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    RAINNC     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    SWDOWN     (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    GLW        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    XLAT       (Time, south_north, west_east) float32 28.0481 28.0335 28.018 ...
    XLONG      (Time, south_north, west_east) float32 -93.8044 -93.5019 ...
    TMN        (Time, south_north, west_east) float32 295.446 295.454 ...
    XLAND      (Time, south_north, west_east) float32 2.0 2.0 2.0 2.0 2.0 ...
    PBLH       (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    HFX        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    QFX        (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    LH         (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...
    SNOWC      (Time, south_north, west_east) float32 0.0 0.0 0.0 0.0 0.0 ...

All the above displayed are the variables for the data set


In [6]:
ds.coords


Out[6]:
Coordinates:
  * Time              (Time) int64 0 1 2 3 4 5 6 7 8 9 10 11 12
  * bottom_top        (bottom_top) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * bottom_top_stag   (bottom_top_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 ...
  * ext_scalar        (ext_scalar) int64 0
  * soil_layers_stag  (soil_layers_stag) int64 0 1 2 3 4
  * south_north       (south_north) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * south_north_stag  (south_north_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 ...
  * west_east         (west_east) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * west_east_stag    (west_east_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 ...

The above are the coordinates of the data


In [7]:
ds.attrs


Out[7]:
OrderedDict([('TITLE', ' OUTPUT FROM WRF V2.0 MODEL'),
             ('START_DATE', '2000-01-24_12:00:00'),
             ('WEST-EAST_GRID_DIMENSION', 74),
             ('SOUTH-NORTH_GRID_DIMENSION', 61),
             ('BOTTOM-TOP_GRID_DIMENSION', 28),
             ('GRIDTYPE', 'C'),
             ('DYN_OPT', 2),
             ('DIFF_OPT', 0),
             ('KM_OPT', 1),
             ('DAMP_OPT', 0),
             ('KHDIF', 0.0),
             ('KVDIF', 0.0),
             ('MP_PHYSICS', 3),
             ('RA_LW_PHYSICS', 1),
             ('RA_SW_PHYSICS', 1),
             ('SF_SFCLAY_PHYSICS', 1),
             ('SF_SURFACE_PHYSICS', 1),
             ('BL_PBL_PHYSICS', 1),
             ('CU_PHYSICS', 1),
             ('WEST-EAST_PATCH_START_UNSTAG', 1),
             ('WEST-EAST_PATCH_END_UNSTAG', 73),
             ('WEST-EAST_PATCH_START_STAG', 1),
             ('WEST-EAST_PATCH_END_STAG', 74),
             ('SOUTH-NORTH_PATCH_START_UNSTAG', 1),
             ('SOUTH-NORTH_PATCH_END_UNSTAG', 60),
             ('SOUTH-NORTH_PATCH_START_STAG', 1),
             ('SOUTH-NORTH_PATCH_END_STAG', 61),
             ('BOTTOM-TOP_PATCH_START_UNSTAG', 1),
             ('BOTTOM-TOP_PATCH_END_UNSTAG', 27),
             ('BOTTOM-TOP_PATCH_START_STAG', 1),
             ('BOTTOM-TOP_PATCH_END_STAG', 28),
             ('DX', 30000.0),
             ('DY', 30000.0),
             ('DT', 180.0),
             ('CEN_LAT', 34.831577),
             ('CEN_LON', -81.027557),
             ('TRUELAT1', 30.0),
             ('TRUELAT2', 60.0),
             ('MOAD_CEN_LAT', 34.831577),
             ('STAND_LON', -98.0),
             ('GMT', 12.0),
             ('JULYR', 2000),
             ('JULDAY', 24),
             ('ISWATER', 16),
             ('ISICE', 24),
             ('ISURBAN', 1),
             ('ISOILWATER', 14),
             ('MAP_PROJ', 1),
             ('MMINLU', 'USGS')])

Above is the metadata

ATTRIBUTES OF VARIABLES


In [8]:
ds.Times


Out[8]:
<xarray.DataArray 'Times' (Time: 13)>
array([b'2000-01-24_12:00:00', b'2000-01-24_13:00:00',
       b'2000-01-24_14:00:00', b'2000-01-24_15:00:00',
       b'2000-01-24_16:00:00', b'2000-01-24_17:00:00',
       b'2000-01-24_18:00:00', b'2000-01-24_19:00:00',
       b'2000-01-24_20:00:00', b'2000-01-24_21:00:00',
       b'2000-01-24_22:00:00', b'2000-01-24_23:00:00',
       b'2000-01-25_00:00:00'], 
      dtype='|S19')
Coordinates:
  * Time     (Time) int64 0 1 2 3 4 5 6 7 8 9 10 11 12

This data has been captured for 13 time intervals, numbered zero to twelve, from 01/24/2000 12 noon to midnight of 01/25/2000 respectively#


In [9]:
ds.LU_INDEX


Out[9]:
<xarray.DataArray 'LU_INDEX' (Time: 13, south_north: 60, west_east: 73)>
array([[[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       ..., 
       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]]], dtype=float32)
Coordinates:
  * Time         (Time) int64 0 1 2 3 4 5 6 7 8 9 10 11 12
  * south_north  (south_north) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...
  * west_east    (west_east) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...
Attributes:
    FieldType: 104
    MemoryOrder: XY 
    description: LAND USE CATEGORY
    units: 
    stagger: 

This "Land Use Category" is a function of three axis : time,south_north,west_east


In [10]:
ds.U


Out[10]:
<xarray.DataArray 'U' (Time: 13, bottom_top: 27, south_north: 60, west_east_stag: 74)>
[1558440 values with dtype=float32]
Coordinates:
  * Time            (Time) int64 0 1 2 3 4 5 6 7 8 9 10 11 12
  * bottom_top      (bottom_top) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...
  * south_north     (south_north) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * west_east_stag  (west_east_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 ...
Attributes:
    FieldType: 104
    MemoryOrder: XYZ
    description: x-wind component
    units: m s-1
    stagger: X

In [11]:
ds.LU_INDEX.values


Out[11]:
array([[[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       ..., 
       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]],

       [[ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        [ 16.,  16.,  16., ...,  16.,  16.,  16.],
        ..., 
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  2.,   5.,   5., ...,  16.,  16.,  16.],
        [  5.,   5.,   5., ...,  16.,  16.,  16.]]], dtype=float32)

In [12]:
ds.U.values


Out[12]:
array([[[[ -1.06967402e+00,  -4.10358071e-01,   2.79431820e-01, ...,
           -6.67915010e+00,  -6.85910463e+00,  -7.07047939e+00],
         [ -7.91599751e-01,  -2.26073503e-01,   3.66212606e-01, ...,
           -6.46713161e+00,  -6.63222551e+00,  -6.86797953e+00],
         [ -4.41465139e-01,   3.54691669e-02,   5.09744644e-01, ...,
           -6.25346756e+00,  -6.43438959e+00,  -6.68070793e+00],
         ..., 
         [  4.34557533e+00,   4.70250082e+00,   4.43125439e+00, ...,
            8.57912827e+00,   8.19622040e+00,   7.38154697e+00],
         [  4.36154366e+00,   4.51428413e+00,   4.20090389e+00, ...,
            7.51440668e+00,   7.31502151e+00,   6.67618370e+00],
         [  3.27629757e+00,   2.75278544e+00,   2.31950283e+00, ...,
            6.61795616e+00,   6.46919727e+00,   6.00189114e+00]],

        [[ -1.31678331e+00,  -5.72844207e-01,   2.07816660e-01, ...,
           -6.94556904e+00,  -7.17459583e+00,  -7.48022175e+00],
         [ -9.60450649e-01,  -3.13160598e-01,   3.47363442e-01, ...,
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           -6.62500048e+00,  -6.89136505e+00,  -7.20293379e+00],
         ..., 
         [  6.61507702e+00,   6.59213924e+00,   6.00994587e+00, ...,
            8.83132744e+00,   8.43248177e+00,   7.58793163e+00],
         [  6.97620487e+00,   6.67993259e+00,   6.07681799e+00, ...,
            7.76199627e+00,   7.55121994e+00,   6.84248352e+00],
         [  6.18448162e+00,   5.43703175e+00,   4.86458588e+00, ...,
            6.83063316e+00,   6.72123766e+00,   6.20164347e+00]],

        [[ -1.56960344e+00,  -7.69553483e-01,   5.15429974e-02, ...,
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         [ -1.11912727e+00,  -4.12408441e-01,   2.71524429e-01, ...,
           -7.56838417e+00,  -7.88363504e+00,  -8.24474621e+00],
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           -7.29421139e+00,  -7.62294531e+00,  -8.00436592e+00],
         ..., 
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            8.58039379e+00,   8.17822552e+00,   7.35691929e+00],
         [  8.70069313e+00,   8.28824806e+00,   7.74882126e+00, ...,
            7.53954458e+00,   7.34000683e+00,   6.63142586e+00],
         [  8.65955353e+00,   8.08113098e+00,   7.46872139e+00, ...,
            6.62807941e+00,   6.53002739e+00,   6.03352070e+00]],

        ..., 
        [[  3.23178558e+01,   3.29084778e+01,   3.34504929e+01, ...,
            2.51080132e+01,   2.52066441e+01,   2.52717457e+01],
         [  3.17917957e+01,   3.23453522e+01,   3.28488159e+01, ...,
            2.47356377e+01,   2.47987537e+01,   2.48279724e+01],
         [  3.13567886e+01,   3.18437080e+01,   3.22575150e+01, ...,
            2.44218903e+01,   2.44373932e+01,   2.44238415e+01],
         ..., 
         [  2.07541447e+01,   2.05104656e+01,   2.02919064e+01, ...,
            2.25042877e+01,   2.27743874e+01,   2.29918404e+01],
         [  2.09591503e+01,   2.06611252e+01,   2.03807068e+01, ...,
            2.25637989e+01,   2.28649883e+01,   2.30758438e+01],
         [  2.11834183e+01,   2.08352032e+01,   2.05058384e+01, ...,
            2.26006756e+01,   2.29296017e+01,   2.31074257e+01]],

        [[  2.55243340e+01,   2.58764763e+01,   2.61713009e+01, ...,
            2.00763245e+01,   2.02632599e+01,   2.04572449e+01],
         [  2.48227692e+01,   2.51246700e+01,   2.53856831e+01, ...,
            1.95808830e+01,   1.97479687e+01,   1.99314747e+01],
         [  2.42168999e+01,   2.44680443e+01,   2.46752319e+01, ...,
            1.91651611e+01,   1.93108940e+01,   1.94842033e+01],
         ..., 
         [  2.07007027e+01,   2.05225658e+01,   2.03761158e+01, ...,
            2.02832851e+01,   2.02612343e+01,   2.02427025e+01],
         [  2.09134197e+01,   2.06872711e+01,   2.04862671e+01, ...,
            2.02516937e+01,   2.02249546e+01,   2.02023048e+01],
         [  2.11714172e+01,   2.08963680e+01,   2.06464500e+01, ...,
            2.01815701e+01,   2.01597729e+01,   2.01233349e+01]],

        [[  1.97298622e+01,   1.98785934e+01,   1.99625778e+01, ...,
            1.57845850e+01,   1.60468445e+01,   1.63507614e+01],
         [  1.88786011e+01,   1.89658566e+01,   1.90200691e+01, ...,
            1.51841784e+01,   1.54399471e+01,   1.57550507e+01],
         [  1.81269951e+01,   1.81770401e+01,   1.82079926e+01, ...,
            1.46814842e+01,   1.49382925e+01,   1.52709866e+01],
         ..., 
         [  2.06551208e+01,   2.05328884e+01,   2.04479389e+01, ...,
            1.83889008e+01,   1.81176643e+01,   1.78978500e+01],
         [  2.08744164e+01,   2.07095757e+01,   2.05763035e+01, ...,
            1.82796021e+01,   1.79731636e+01,   1.77513428e+01],
         [  2.11611862e+01,   2.09485397e+01,   2.07663879e+01, ...,
            1.81182137e+01,   1.77972736e+01,   1.75780811e+01]]],


       [[[ -1.00144780e+00,  -4.24429327e-01,   1.93874002e-01, ...,
           -6.32570934e+00,  -6.57161951e+00,  -6.84024191e+00],
         [ -7.57664621e-01,  -2.91148186e-01,   1.41562179e-01, ...,
           -6.52183533e+00,  -6.79836750e+00,  -6.66454124e+00],
         [ -4.54915822e-01,   2.88742095e-01,   5.46905816e-01, ...,
           -6.56823206e+00,  -6.90089512e+00,  -6.50573158e+00],
         ..., 
         [  4.26903391e+00,   4.96063375e+00,   4.84389973e+00, ...,
            9.42690659e+00,   9.51870155e+00,   7.08263540e+00],
         [  4.36926270e+00,   5.20092821e+00,   4.88201046e+00, ...,
            8.29655552e+00,   8.28858185e+00,   6.58059406e+00],
         [  3.54872251e+00,   3.01625347e+00,   2.57785678e+00, ...,
            6.40396500e+00,   6.38766241e+00,   6.08906269e+00]],

        [[ -1.36003530e+00,  -7.25269854e-01,  -5.20374887e-02, ...,
           -6.49867916e+00,  -6.77672768e+00,  -7.11451244e+00],
         [ -1.04701757e+00,  -3.18325430e-01,   9.96877775e-02, ...,
           -6.58949947e+00,  -6.88420963e+00,  -6.97714043e+00],
         [ -6.65924668e-01,   2.76487112e-01,   5.33830225e-01, ...,
           -6.62324810e+00,  -7.00111485e+00,  -6.88521528e+00],
         ..., 
         [  6.18882179e+00,   7.30749464e+00,   6.98555899e+00, ...,
            9.66497803e+00,   9.75345135e+00,   7.11037445e+00],
         [  6.57176399e+00,   7.50930882e+00,   7.00326586e+00, ...,
            8.51543713e+00,   8.53225422e+00,   6.61498833e+00],
         [  6.04988098e+00,   5.41112232e+00,   4.93211031e+00, ...,
            6.54420853e+00,   6.55933666e+00,   6.18431234e+00]],

        [[ -1.67404842e+00,  -1.00095940e+00,  -3.08180422e-01, ...,
           -7.30019855e+00,  -7.67908764e+00,  -8.07161808e+00],
         [ -1.28088057e+00,  -3.40470016e-01,   6.97965398e-02, ...,
           -7.62457132e+00,  -7.98487043e+00,  -7.83418417e+00],
         [ -8.18309188e-01,   2.56066859e-01,   5.20627141e-01, ...,
           -7.74582720e+00,  -8.07071018e+00,  -7.62805176e+00],
         ..., 
         [  8.31885147e+00,   9.15348148e+00,   8.75918198e+00, ...,
            9.60179424e+00,   9.69469070e+00,   6.92694998e+00],
         [  8.75715351e+00,   9.40445423e+00,   8.86826134e+00, ...,
            8.45100403e+00,   8.50534821e+00,   6.44906425e+00],
         [  8.64126015e+00,   8.16330338e+00,   7.69730997e+00, ...,
            6.39683819e+00,   6.42326212e+00,   6.05734205e+00]],

        ..., 
        [[  3.22697601e+01,   3.27794609e+01,   3.32600174e+01, ...,
            2.53083477e+01,   2.52440739e+01,   2.51330776e+01],
         [  3.17274761e+01,   3.22830544e+01,   3.29308853e+01, ...,
            2.46859627e+01,   2.49025974e+01,   2.46020412e+01],
         [  3.12437649e+01,   3.15623894e+01,   3.22233047e+01, ...,
            2.38928909e+01,   2.41245842e+01,   2.41207657e+01],
         ..., 
         [  2.11657486e+01,   2.17355785e+01,   2.15562382e+01, ...,
            2.21255932e+01,   2.21981468e+01,   2.23943768e+01],
         [  2.13936939e+01,   2.18015537e+01,   2.15367603e+01, ...,
            2.18703613e+01,   2.19428921e+01,   2.24499149e+01],
         [  2.16369400e+01,   2.13245564e+01,   2.10257168e+01, ...,
            2.19943733e+01,   2.22941933e+01,   2.24655704e+01]],

        [[  2.54255695e+01,   2.57198620e+01,   2.59671497e+01, ...,
            2.02216644e+01,   2.02936268e+01,   2.03655434e+01],
         [  2.47594280e+01,   2.54525986e+01,   2.58068314e+01, ...,
            1.94419479e+01,   1.96941299e+01,   1.97796516e+01],
         [  2.41649723e+01,   2.46524448e+01,   2.50469627e+01, ...,
            1.84629097e+01,   1.86556377e+01,   1.92659817e+01],
         ..., 
         [  2.11737270e+01,   2.16642170e+01,   2.15806541e+01, ...,
            2.05091381e+01,   2.03991642e+01,   1.96534023e+01],
         [  2.14142799e+01,   2.18178596e+01,   2.16602001e+01, ...,
            2.01521759e+01,   1.99826832e+01,   1.96431427e+01],
         [  2.16874676e+01,   2.14563904e+01,   2.12470207e+01, ...,
            1.96546421e+01,   1.96327610e+01,   1.96036167e+01]],

        [[  1.95879135e+01,   1.96984673e+01,   1.97467422e+01, ...,
            1.58830070e+01,   1.60711937e+01,   1.62991085e+01],
         [  1.88161430e+01,   1.94872952e+01,   1.95703182e+01, ...,
            1.48834715e+01,   1.52140417e+01,   1.56664600e+01],
         [  1.81271172e+01,   1.86509018e+01,   1.87671318e+01, ...,
            1.37071609e+01,   1.39549875e+01,   1.51251564e+01],
         ..., 
         [  2.11805210e+01,   2.16125603e+01,   2.16505241e+01, ...,
            1.91533680e+01,   1.87639675e+01,   1.73154831e+01],
         [  2.14318333e+01,   2.18367805e+01,   2.18195610e+01, ...,
            1.87091656e+01,   1.82209854e+01,   1.72491531e+01],
         [  2.17305374e+01,   2.15688648e+01,   2.14357815e+01, ...,
            1.76590080e+01,   1.73627052e+01,   1.71625385e+01]]],


       [[[ -9.33259308e-01,  -4.38492537e-01,   1.08367920e-01, ...,
           -5.97208071e+00,  -6.28397560e+00,  -6.60987329e+00],
         [ -7.23746002e-01,  -4.73573476e-01,   5.60915051e-03, ...,
           -6.18052197e+00,  -6.60754728e+00,  -6.46098804e+00],
         [ -4.68360960e-01,   1.34487659e-01,   4.05587941e-01, ...,
           -6.30006361e+00,  -6.77880955e+00,  -6.33065367e+00],
         ..., 
         [  4.19243479e+00,   4.95554590e+00,   4.76707983e+00, ...,
            8.85169506e+00,   8.91789913e+00,   6.78378344e+00],
         [  4.37698698e+00,   5.29668045e+00,   4.88889885e+00, ...,
            7.72696304e+00,   7.80686617e+00,   6.48502350e+00],
         [  3.82134438e+00,   3.27991652e+00,   2.83641386e+00, ...,
            6.19003391e+00,   6.30614758e+00,   6.17620993e+00]],

        [[ -1.40326357e+00,  -8.77607942e-01,  -3.11734438e-01, ...,
           -6.05154896e+00,  -6.37863684e+00,  -6.74860001e+00],
         [ -1.13354278e+00,  -5.12843192e-01,  -8.02726224e-02, ...,
           -6.21609497e+00,  -6.63717270e+00,  -6.63846922e+00],
         [ -8.07767272e-01,   1.02965243e-01,   3.57404351e-01, ...,
           -6.33855963e+00,  -6.82869577e+00,  -6.56731462e+00],
         ..., 
         [  5.76223993e+00,   7.30773926e+00,   7.03802395e+00, ...,
            9.03033924e+00,   9.10583305e+00,   6.63291597e+00],
         [  6.16705084e+00,   7.59679556e+00,   7.09360886e+00, ...,
            7.88250399e+00,   8.01029587e+00,   6.38754225e+00],
         [  5.91518116e+00,   5.38519287e+00,   4.99968815e+00, ...,
            6.25786400e+00,   6.39748144e+00,   6.16698360e+00]],

        [[ -1.77843583e+00,  -1.23223174e+00,  -6.67686641e-01, ...,
           -6.75552750e+00,  -7.18626308e+00,  -7.62362289e+00],
         [ -1.44255328e+00,  -5.38240612e-01,  -1.34040937e-01, ...,
           -7.09075069e+00,  -7.62245321e+00,  -7.42339087e+00],
         [ -1.04652333e+00,   7.39466175e-02,   3.25546086e-01, ...,
           -7.28178501e+00,  -7.74224520e+00,  -7.25152159e+00],
         ..., 
         [  8.47320747e+00,   9.59616280e+00,   9.23646259e+00, ...,
            8.98674870e+00,   9.05209255e+00,   6.49706888e+00],
         [  8.81365204e+00,   9.82119179e+00,   9.30159760e+00, ...,
            7.83578777e+00,   7.98359728e+00,   6.26674557e+00],
         [  8.62295437e+00,   8.24553680e+00,   7.92608070e+00, ...,
            6.16565847e+00,   6.31652546e+00,   6.08115864e+00]],

        ..., 
        [[  3.22217026e+01,   3.26505280e+01,   3.30696640e+01, ...,
            2.55087872e+01,   2.52815208e+01,   2.49943409e+01],
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            2.49751167e+01,   2.49655132e+01,   2.43759861e+01],
         [  3.11308041e+01,   3.13099995e+01,   3.19950619e+01, ...,
            2.41896362e+01,   2.42385960e+01,   2.38175201e+01],
         ..., 
         [  2.15776653e+01,   2.22957039e+01,   2.22236404e+01, ...,
            2.21611633e+01,   2.22320290e+01,   2.17970390e+01],
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            2.16857128e+01,   2.19074860e+01,   2.18241272e+01],
         [  2.20907860e+01,   2.18142738e+01,   2.15460052e+01, ...,
            2.13882122e+01,   2.16589565e+01,   2.18238869e+01]],

        [[  2.53268623e+01,   2.55633354e+01,   2.57631226e+01, ...,
            2.03670826e+01,   2.03240185e+01,   2.02737885e+01],
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            1.89053764e+01,   1.89869785e+01,   1.90476303e+01],
         ..., 
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            2.08717079e+01,   2.07342587e+01,   1.90642185e+01],
         [  2.19154758e+01,   2.24796314e+01,   2.23607635e+01, ...,
            2.02272434e+01,   2.01690884e+01,   1.90841122e+01],
         [  2.22038822e+01,   2.20168343e+01,   2.18480740e+01, ...,
            1.91278534e+01,   1.91058941e+01,   1.90840359e+01]],

        [[  1.94460449e+01,   1.95184441e+01,   1.95310345e+01, ...,
            1.59814844e+01,   1.60955601e+01,   1.62474251e+01],
         [  1.87537117e+01,   1.92562599e+01,   1.93892059e+01, ...,
            1.52029476e+01,   1.54194202e+01,   1.55778189e+01],
         [  1.81272488e+01,   1.85323048e+01,   1.86809196e+01, ...,
            1.42112217e+01,   1.44085073e+01,   1.49792500e+01],
         ..., 
         [  2.17063236e+01,   2.22590275e+01,   2.23764324e+01, ...,
            1.97834702e+01,   1.93032398e+01,   1.67332268e+01],
         [  2.19896278e+01,   2.25450115e+01,   2.25553303e+01, ...,
            1.89741344e+01,   1.85629902e+01,   1.67470779e+01],
         [  2.23002949e+01,   2.21896534e+01,   2.21057091e+01, ...,
            1.71999302e+01,   1.69282532e+01,   1.67471142e+01]]],


       ..., 
       [[[  1.04061818e+00,   1.02259743e+00,   1.03496981e+00, ...,
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         ..., 
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        [[ -6.52704835e-01,  -6.73420787e-01,  -6.81967199e-01, ...,
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         ..., 
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         [  6.20491791e+00,   8.18410301e+00,   7.16983318e+00, ...,
            8.31276715e-01,   1.35711539e+00,   1.69279516e+00],
         [  6.48207045e+00,   6.61915255e+00,   6.68150282e+00, ...,
            1.76376116e+00,   2.20160270e+00,   2.51192307e+00]],

        [[ -1.45428264e+00,  -1.47797227e+00,  -1.50682950e+00, ...,
           -3.16360164e+00,  -4.07071352e+00,  -4.89138603e+00],
         [ -1.37931526e+00,  -9.67433393e-01,  -9.03558314e-01, ...,
           -3.09883499e+00,  -4.62215853e+00,  -4.77060175e+00],
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           -2.96068406e+00,  -4.70163631e+00,  -4.68123484e+00],
         ..., 
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         [  7.73153400e+00,   9.68354893e+00,   9.03425312e+00, ...,
            7.08812952e-01,   1.16523600e+00,   1.49507856e+00],
         [  7.62990093e+00,   7.83613729e+00,   8.13372803e+00, ...,
            1.64805210e+00,   2.05132914e+00,   2.32882357e+00]],

        ..., 
        [[  2.92431164e+01,   2.95470581e+01,   2.98772850e+01, ...,
            3.01570930e+01,   2.97331448e+01,   2.92187958e+01],
         [  2.92111225e+01,   2.96454124e+01,   3.02194252e+01, ...,
            2.99085178e+01,   2.95332642e+01,   2.83826370e+01],
         [  2.91001720e+01,   2.99808369e+01,   3.06294670e+01, ...,
            2.94904060e+01,   2.91547108e+01,   2.74789314e+01],
         ..., 
         [  2.32973633e+01,   2.45822506e+01,   2.47307529e+01, ...,
            1.54113998e+01,   1.52530584e+01,   1.63550396e+01],
         [  2.30633717e+01,   2.41040230e+01,   2.41265182e+01, ...,
            1.56146030e+01,   1.54178152e+01,   1.65340900e+01],
         [  2.28401108e+01,   2.30143185e+01,   2.31828289e+01, ...,
            1.69122925e+01,   1.68265095e+01,   1.67585220e+01]],

        [[  2.32097321e+01,   2.33629494e+01,   2.35081005e+01, ...,
            2.43706417e+01,   2.40891533e+01,   2.37833462e+01],
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            2.42001877e+01,   2.38346424e+01,   2.25637989e+01],
         ..., 
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            1.36848211e+01,   1.37178707e+01,   1.50907707e+01],
         [  2.18327465e+01,   2.31565418e+01,   2.32694626e+01, ...,
            1.42915049e+01,   1.40900793e+01,   1.53416729e+01],
         [  2.18179893e+01,   2.20117283e+01,   2.22193832e+01, ...,
            1.58879108e+01,   1.57335558e+01,   1.56334066e+01]],

        [[  1.80639572e+01,   1.80884285e+01,   1.80754681e+01, ...,
            1.94350586e+01,   1.92752190e+01,   1.91472759e+01],
         [  1.78265858e+01,   1.81470070e+01,   1.83540554e+01, ...,
            1.95512962e+01,   1.92826729e+01,   1.87812824e+01],
         [  1.75828552e+01,   1.85131226e+01,   1.86265125e+01, ...,
            1.93556366e+01,   1.90916538e+01,   1.83717842e+01],
         ..., 
         [  2.06369476e+01,   2.25896206e+01,   2.31117039e+01, ...,
            1.24850445e+01,   1.22438812e+01,   1.40124140e+01],
         [  2.07830811e+01,   2.23327141e+01,   2.25281887e+01, ...,
            1.31523695e+01,   1.26421404e+01,   1.43247824e+01],
         [  2.09462128e+01,   2.11567535e+01,   2.13978901e+01, ...,
            1.50142469e+01,   1.48011904e+01,   1.46737804e+01]]],


       [[[  1.46649563e+00,   1.40236127e+00,   1.35236025e+00, ...,
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         ..., 
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        [[ -4.21622396e-01,  -4.70015824e-01,  -5.15027642e-01, ...,
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         ..., 
         [  6.42643499e+00,   8.75534821e+00,   7.72517014e+00, ...,
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         [  6.61953115e+00,   8.40909958e+00,   7.54963779e+00, ...,
           -8.71165320e-02,   4.72894460e-01,   7.47575700e-01],
         [  6.75854921e+00,   6.95345259e+00,   7.03414488e+00, ...,
            9.27494109e-01,   1.31556773e+00,   1.61667228e+00]],

        [[ -1.26878107e+00,  -1.30826592e+00,  -1.35748148e+00, ...,
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         [ -1.20183825e+00,  -7.82067001e-01,  -8.68322492e-01, ...,
           -2.70853829e+00,  -4.35688925e+00,  -4.51857662e+00],
         [ -1.06883049e+00,  -2.97174364e-01,  -5.74240267e-01, ...,
           -2.50288343e+00,  -4.40595961e+00,  -4.41548347e+00],
         ..., 
         [  7.43637180e+00,   9.95794106e+00,   9.36483955e+00, ...,
           -1.29583895e+00,  -8.16675603e-01,  -4.69000638e-01],
         [  7.40460873e+00,   9.31915569e+00,   8.82746983e+00, ...,
           -2.48986393e-01,   2.38417685e-01,   4.85603213e-01],
         [  7.40012789e+00,   7.65149355e+00,   7.95646954e+00, ...,
            7.50865817e-01,   1.09297585e+00,   1.36822307e+00]],

        ..., 
        [[  2.85456390e+01,   2.88991833e+01,   2.92685680e+01, ...,
            3.11192532e+01,   3.08093834e+01,   3.04147606e+01],
         [  2.86617146e+01,   2.91574650e+01,   2.97310371e+01, ...,
            3.08231354e+01,   3.06138344e+01,   2.96116848e+01],
         [  2.87049866e+01,   2.96515980e+01,   3.02939568e+01, ...,
            3.04990788e+01,   3.03106632e+01,   2.86991272e+01],
         ..., 
         [  2.33145771e+01,   2.46920242e+01,   2.47936859e+01, ...,
            1.46760731e+01,   1.44301920e+01,   1.55922985e+01],
         [  2.29365978e+01,   2.39733353e+01,   2.40155067e+01, ...,
            1.49741497e+01,   1.46428671e+01,   1.58378620e+01],
         [  2.25729523e+01,   2.28238125e+01,   2.30707397e+01, ...,
            1.63997402e+01,   1.62539692e+01,   1.61342411e+01]],

        [[  2.27785053e+01,   2.29686966e+01,   2.31476536e+01, ...,
            2.52266045e+01,   2.50007019e+01,   2.47533569e+01],
         [  2.27225304e+01,   2.31577587e+01,   2.35157948e+01, ...,
            2.53917732e+01,   2.52099781e+01,   2.42471313e+01],
         [  2.26291599e+01,   2.36219025e+01,   2.39942608e+01, ...,
            2.54578037e+01,   2.51332245e+01,   2.36625462e+01],
         ..., 
         [  2.14412518e+01,   2.32488060e+01,   2.35455379e+01, ...,
            1.28859253e+01,   1.29026060e+01,   1.46866922e+01],
         [  2.13103561e+01,   2.26584148e+01,   2.27687263e+01, ...,
            1.36166363e+01,   1.33258104e+01,   1.49652348e+01],
         [  2.12045937e+01,   2.14492512e+01,   2.17101555e+01, ...,
            1.56047211e+01,   1.54174023e+01,   1.52904291e+01]],

        [[  1.78598652e+01,   1.79104729e+01,   1.79267941e+01, ...,
            2.02004662e+01,   2.00463371e+01,   1.99245949e+01],
         [  1.76569691e+01,   1.79356155e+01,   1.81019802e+01, ...,
            2.05597095e+01,   2.04068031e+01,   1.96716480e+01],
         [  1.74465027e+01,   1.83462887e+01,   1.84198895e+01, ...,
            2.07660007e+01,   2.04917507e+01,   1.93669701e+01],
         ..., 
         [  1.98433990e+01,   2.19767189e+01,   2.24309120e+01, ...,
            1.13437290e+01,   1.12807188e+01,   1.39142675e+01],
         [  1.99232292e+01,   2.15229321e+01,   2.17015896e+01, ...,
            1.23213863e+01,   1.17679892e+01,   1.42211304e+01],
         [  2.00375061e+01,   2.02770309e+01,   2.05499287e+01, ...,
            1.49266920e+01,   1.47037058e+01,   1.45707321e+01]]],


       [[[  1.89257491e+00,   1.78230500e+00,   1.66989648e+00, ...,
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           -2.26044536e+00,  -4.38595724e+00,  -4.33877850e+00],
         ..., 
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         [  6.15708780e+00,   6.57933140e+00,   6.55289364e+00, ...,
            1.65255463e+00,   2.09686732e+00,   2.46990800e+00]],

        [[ -1.90430835e-01,  -2.66514421e-01,  -3.48011553e-01, ...,
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         [ -1.63543671e-01,  -4.55334932e-01,  -5.58560491e-01, ...,
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         [ -8.01372230e-02,   1.11331291e-01,  -2.85679579e-01, ...,
           -2.22798109e+00,  -4.34143877e+00,  -4.12620687e+00],
         ..., 
         [  6.90075970e+00,   9.10374451e+00,   7.98860168e+00, ...,
           -2.40791869e+00,  -1.69340968e+00,  -1.19822729e+00],
         [  7.03403950e+00,   8.64661121e+00,   7.80918503e+00, ...,
           -1.10471797e+00,  -4.56632823e-01,  -1.97186723e-01],
         [  7.03495598e+00,   7.28768587e+00,   7.38675022e+00, ...,
            9.16742235e-02,   4.30005550e-01,   7.21897364e-01]],

        [[ -1.08319211e+00,  -1.13847899e+00,  -1.20806658e+00, ...,
           -2.45778084e+00,  -3.49942923e+00,  -4.42207956e+00],
         [ -1.02428484e+00,  -5.39620996e-01,  -7.60798335e-01, ...,
           -2.27774549e+00,  -4.08372593e+00,  -4.26646805e+00],
         [ -8.90713573e-01,   3.96009535e-02,  -4.10722852e-01, ...,
           -1.95820737e+00,  -4.09545279e+00,  -4.14963245e+00],
         ..., 
         [  7.10558224e+00,   9.64152908e+00,   9.10778809e+00, ...,
           -2.58078814e+00,  -1.96269166e+00,  -1.51725030e+00],
         [  7.07776022e+00,   8.92185211e+00,   8.51795197e+00, ...,
           -1.30538452e+00,  -7.32617378e-01,  -5.23383141e-01],
         [  7.17041445e+00,   7.46688843e+00,   7.77923203e+00, ...,
           -1.45841613e-01,   1.35133252e-01,   4.08132076e-01]],

        ..., 
        [[  2.78478355e+01,   2.82509880e+01,   2.86595669e+01, ...,
            3.20817261e+01,   3.18859596e+01,   3.16110878e+01],
         [  2.81120758e+01,   2.85089207e+01,   2.90557461e+01, ...,
            3.17299843e+01,   3.16046963e+01,   3.08411331e+01],
         [  2.83096600e+01,   2.90518055e+01,   2.96286106e+01, ...,
            3.13570766e+01,   3.11698627e+01,   2.99197731e+01],
         ..., 
         [  2.33317757e+01,   2.47741375e+01,   2.48638630e+01, ...,
            1.38226233e+01,   1.34841709e+01,   1.48298569e+01],
         [  2.28098621e+01,   2.38257332e+01,   2.39063702e+01, ...,
            1.43550825e+01,   1.38688841e+01,   1.51419678e+01],
         [  2.23058662e+01,   2.26333485e+01,   2.29586735e+01, ...,
            1.58874664e+01,   1.56817322e+01,   1.55102892e+01]],

        [[  2.23470860e+01,   2.25742550e+01,   2.27870445e+01, ...,
            2.60828495e+01,   2.59125404e+01,   2.57236748e+01],
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            2.63086338e+01,   2.61524487e+01,   2.52937279e+01],
         [  2.23735600e+01,   2.30327682e+01,   2.33245220e+01, ...,
            2.63770676e+01,   2.60007858e+01,   2.47617092e+01],
         ..., 
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            1.23353977e+01,   1.23760061e+01,   1.42827692e+01],
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            1.53216810e+01,   1.51014185e+01,   1.49476395e+01]],

        [[  1.76556816e+01,   1.77324371e+01,   1.77780495e+01, ...,
            2.09661102e+01,   2.08176937e+01,   2.07021370e+01],
         [  1.74872799e+01,   1.75239124e+01,   1.76288643e+01, ...,
            2.14564400e+01,   2.12890644e+01,   2.05623035e+01],
         [  1.73100986e+01,   1.78190613e+01,   1.78017368e+01, ...,
            2.17160435e+01,   2.13773670e+01,   2.03625393e+01],
         ..., 
         [  1.90500908e+01,   2.13338108e+01,   2.17711163e+01, ...,
            1.07876501e+01,   1.07998266e+01,   1.38161602e+01],
         [  1.90635738e+01,   2.06903362e+01,   2.08795490e+01, ...,
            1.18902979e+01,   1.12534914e+01,   1.41175280e+01],
         [  1.91290340e+01,   1.93974800e+01,   1.97020626e+01, ...,
            1.48391857e+01,   1.46062756e+01,   1.44677391e+01]]]], dtype=float32)

In [13]:
ds.QVAPOR.values


Out[13]:
array([[[[  8.18111189e-03,   8.27421620e-03,   8.34916998e-03, ...,
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         ..., 
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         ..., 
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         ..., 
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        ..., 
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         ..., 
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        [[  1.17959517e-05,   1.18691414e-05,   1.19636243e-05, ...,
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         ..., 
         [  1.03322973e-05,   1.03304419e-05,   1.03390666e-05, ...,
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            1.12309026e-05,   1.12868847e-05,   1.13538772e-05]]],


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         ..., 
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         [  1.09364709e-03,   1.05991133e-03,   9.61526472e-04, ...,
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        [[  6.87933434e-03,   6.88044261e-03,   6.87147630e-03, ...,
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         ..., 
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        [[  6.45275926e-03,   6.49122801e-03,   6.50615571e-03, ...,
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         ..., 
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        ..., 
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         ..., 
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        [[  1.26310524e-05,   1.27211615e-05,   1.28388274e-05, ...,
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         ..., 
         [  1.28440915e-05,   1.28475722e-05,   1.28771826e-05, ...,
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         [  1.28276279e-05,   1.28354168e-05,   1.28600886e-05, ...,
            1.44571604e-05,   1.45208469e-05,   1.46305492e-05],
         [  1.28263664e-05,   1.28359570e-05,   1.28518923e-05, ...,
            1.44017358e-05,   1.44658834e-05,   1.45393060e-05]],

        [[  1.16648325e-05,   1.17300215e-05,   1.18148200e-05, ...,
            1.00830657e-05,   1.00588968e-05,   1.00300167e-05],
         [  1.17619984e-05,   1.18333146e-05,   1.19023944e-05, ...,
            1.01253163e-05,   1.01242886e-05,   1.00892776e-05],
         [  1.18360695e-05,   1.19118286e-05,   1.19803772e-05, ...,
            1.01588339e-05,   1.01712421e-05,   1.01460391e-05],
         ..., 
         [  1.03365346e-05,   1.03345128e-05,   1.03429820e-05, ...,
            1.13583619e-05,   1.13982014e-05,   1.14668710e-05],
         [  1.03204393e-05,   1.03187940e-05,   1.03233242e-05, ...,
            1.12937350e-05,   1.13358665e-05,   1.14054474e-05],
         [  1.03033826e-05,   1.03041748e-05,   1.03055863e-05, ...,
            1.12387679e-05,   1.12890857e-05,   1.13521201e-05]]],


       ..., 
       [[[  7.75385555e-03,   7.76361208e-03,   7.76379695e-03, ...,
            1.68901887e-02,   1.69250201e-02,   1.68721192e-02],
         [  7.47797219e-03,   6.53605722e-03,   6.46101404e-03, ...,
            1.66877788e-02,   1.67609490e-02,   1.68607123e-02],
         [  7.13188015e-03,   6.27950998e-03,   6.10536896e-03, ...,
            1.63800605e-02,   1.64262354e-02,   1.68344695e-02],
         ..., 
         [  1.76668505e-03,   1.80526532e-03,   1.82909705e-03, ...,
            7.59800477e-03,   8.02266039e-03,   8.99097323e-03],
         [  1.72638323e-03,   1.76252367e-03,   1.76878902e-03, ...,
            7.40232272e-03,   7.72993406e-03,   8.57959315e-03],
         [  1.68467034e-03,   1.67671801e-03,   1.63152022e-03, ...,
            7.58237718e-03,   7.86468294e-03,   8.19267612e-03]],

        [[  6.94346102e-03,   6.91815093e-03,   6.90854294e-03, ...,
            1.55468341e-02,   1.55406976e-02,   1.55424513e-02],
         [  6.73233857e-03,   6.12454861e-03,   6.07002480e-03, ...,
            1.57383382e-02,   1.56997815e-02,   1.55506572e-02],
         [  6.45334693e-03,   5.90202585e-03,   5.77098038e-03, ...,
            1.53141376e-02,   1.53695224e-02,   1.55483587e-02],
         ..., 
         [  1.81426713e-03,   1.80183840e-03,   1.80708640e-03, ...,
            7.28101796e-03,   7.65227620e-03,   8.29344429e-03],
         [  1.73289166e-03,   1.72956556e-03,   1.72643107e-03, ...,
            7.05485931e-03,   7.35452864e-03,   7.93250743e-03],
         [  1.66692829e-03,   1.64658180e-03,   1.61676167e-03, ...,
            7.05996575e-03,   7.31904479e-03,   7.63307605e-03]],

        [[  6.46119984e-03,   6.43320335e-03,   6.43288111e-03, ...,
            1.29905855e-02,   1.30017307e-02,   1.31003829e-02],
         [  6.29136665e-03,   5.89509774e-03,   5.85014047e-03, ...,
            1.34080909e-02,   1.33134434e-02,   1.32252928e-02],
         [  6.04525488e-03,   5.68676321e-03,   5.58438804e-03, ...,
            1.39351422e-02,   1.37316622e-02,   1.33764334e-02],
         ..., 
         [  1.80483784e-03,   1.80136843e-03,   1.80796301e-03, ...,
            7.05484254e-03,   7.37584475e-03,   7.69792823e-03],
         [  1.69673655e-03,   1.69657590e-03,   1.70596933e-03, ...,
            6.77182665e-03,   7.05653941e-03,   7.36385677e-03],
         [  1.62964466e-03,   1.61052553e-03,   1.60124840e-03, ...,
            6.52751559e-03,   6.78435480e-03,   7.09678046e-03]],

        ..., 
        [[  1.17185264e-05,   1.18716825e-05,   1.20323930e-05, ...,
            1.32572077e-05,   1.31667757e-05,   1.30806029e-05],
         [  1.21276153e-05,   1.23582331e-05,   1.25345059e-05, ...,
            1.34519341e-05,   1.33504564e-05,   1.34382035e-05],
         [  1.25350371e-05,   1.27433359e-05,   1.28970614e-05, ...,
            1.37054521e-05,   1.36047893e-05,   1.37265461e-05],
         ..., 
         [  1.52903904e-05,   1.53217261e-05,   1.53612509e-05, ...,
            1.88752911e-05,   1.89221319e-05,   1.90871106e-05],
         [  1.52566727e-05,   1.52676075e-05,   1.52778885e-05, ...,
            1.89777802e-05,   1.89776110e-05,   1.91174513e-05],
         [  1.52006987e-05,   1.51887070e-05,   1.51877302e-05, ...,
            1.91492345e-05,   1.91550716e-05,   1.91369691e-05]],

        [[  1.13048172e-05,   1.13773813e-05,   1.14632112e-05, ...,
            1.16922001e-05,   1.16003275e-05,   1.15249613e-05],
         [  1.15381945e-05,   1.16497413e-05,   1.17301670e-05, ...,
            1.18494854e-05,   1.17520849e-05,   1.17524296e-05],
         [  1.17674344e-05,   1.18674225e-05,   1.19331080e-05, ...,
            1.20304967e-05,   1.19252927e-05,   1.19344650e-05],
         ..., 
         [  1.26151990e-05,   1.26409750e-05,   1.26688583e-05, ...,
            1.47425699e-05,   1.48475265e-05,   1.50150572e-05],
         [  1.25957395e-05,   1.26056502e-05,   1.26135474e-05, ...,
            1.48275485e-05,   1.48298677e-05,   1.49932139e-05],
         [  1.25631159e-05,   1.25564402e-05,   1.25561282e-05, ...,
            1.49332718e-05,   1.49501730e-05,   1.49605903e-05]],

        [[  1.09518178e-05,   1.09555212e-05,   1.09776292e-05, ...,
            1.03572374e-05,   1.02642225e-05,   1.01980750e-05],
         [  1.10352794e-05,   1.10516530e-05,   1.10615965e-05, ...,
            1.04614746e-05,   1.03614484e-05,   1.03146531e-05],
         [  1.11125055e-05,   1.11263562e-05,   1.11300878e-05, ...,
            1.05659183e-05,   1.04567580e-05,   1.04061255e-05],
         ..., 
         [  1.03334469e-05,   1.03435459e-05,   1.03545426e-05, ...,
            1.13442811e-05,   1.14234836e-05,   1.15416988e-05],
         [  1.03260581e-05,   1.03303837e-05,   1.03333232e-05, ...,
            1.13449123e-05,   1.13689848e-05,   1.14755921e-05],
         [  1.03133534e-05,   1.03112989e-05,   1.03117845e-05, ...,
            1.13371834e-05,   1.13635997e-05,   1.13983724e-05]]],


       [[[  7.69912498e-03,   7.72259850e-03,   7.72510236e-03, ...,
            1.68535709e-02,   1.68847255e-02,   1.68307535e-02],
         [  7.42039364e-03,   6.51684636e-03,   6.43494492e-03, ...,
            1.66379772e-02,   1.67133715e-02,   1.68225840e-02],
         [  7.07644643e-03,   6.26280112e-03,   6.07339526e-03, ...,
            1.63522493e-02,   1.64224990e-02,   1.68067012e-02],
         ..., 
         [  1.76317559e-03,   1.77940668e-03,   1.80908118e-03, ...,
            7.56492466e-03,   7.98530597e-03,   8.95502884e-03],
         [  1.70896132e-03,   1.74552668e-03,   1.77429256e-03, ...,
            7.32624810e-03,   7.66379526e-03,   8.52913316e-03],
         [  1.68705196e-03,   1.70118734e-03,   1.68155693e-03, ...,
            7.48284813e-03,   7.77484570e-03,   8.11119284e-03]],

        [[  6.90181507e-03,   6.87335106e-03,   6.86330162e-03, ...,
            1.54764149e-02,   1.54816657e-02,   1.55038116e-02],
         [  6.67602336e-03,   6.10812195e-03,   6.04884233e-03, ...,
            1.56798176e-02,   1.56456977e-02,   1.55188786e-02],
         [  6.39292970e-03,   5.88889839e-03,   5.74485352e-03, ...,
            1.52780302e-02,   1.53209539e-02,   1.55257331e-02],
         ..., 
         [  1.87436584e-03,   1.84759148e-03,   1.84561405e-03, ...,
            7.21662631e-03,   7.57748634e-03,   8.18533264e-03],
         [  1.76197733e-03,   1.75113697e-03,   1.76199363e-03, ...,
            6.94547035e-03,   7.24738091e-03,   7.80330319e-03],
         [  1.68774114e-03,   1.68273691e-03,   1.67340378e-03, ...,
            6.89835148e-03,   7.16070551e-03,   7.49152433e-03]],

        [[  6.45611109e-03,   6.42032595e-03,   6.42135600e-03, ...,
            1.27852643e-02,   1.28022982e-02,   1.29194325e-02],
         [  6.26407284e-03,   5.88646764e-03,   5.83870336e-03, ...,
            1.32874856e-02,   1.31841060e-02,   1.30587704e-02],
         [  6.01042667e-03,   5.68209635e-03,   5.56651270e-03, ...,
            1.38490042e-02,   1.36010963e-02,   1.32300332e-02],
         ..., 
         [  1.82428362e-03,   1.82187650e-03,   1.84018887e-03, ...,
            6.98024733e-03,   7.29270745e-03,   7.60554103e-03],
         [  1.69550045e-03,   1.69851666e-03,   1.72603363e-03, ...,
            6.65649818e-03,   6.94088638e-03,   7.24143069e-03],
         [  1.63390150e-03,   1.62525161e-03,   1.63510721e-03, ...,
            6.37876568e-03,   6.63154805e-03,   6.95015397e-03]],

        ..., 
        [[  1.13801188e-05,   1.15407338e-05,   1.17084946e-05, ...,
            1.35913888e-05,   1.34992970e-05,   1.33963158e-05],
         [  1.17895597e-05,   1.20408904e-05,   1.22446590e-05, ...,
            1.37789266e-05,   1.36982671e-05,   1.38293453e-05],
         [  1.22302290e-05,   1.24681610e-05,   1.26550995e-05, ...,
            1.40475522e-05,   1.39798822e-05,   1.41752780e-05],
         ..., 
         [  1.52299172e-05,   1.52536122e-05,   1.52832345e-05, ...,
            1.89012535e-05,   1.89663187e-05,   1.91209165e-05],
         [  1.51474178e-05,   1.51556424e-05,   1.51644226e-05, ...,
            1.90280698e-05,   1.90295559e-05,   1.91617019e-05],
         [  1.50365859e-05,   1.50487394e-05,   1.50614369e-05, ...,
            1.92089283e-05,   1.92149291e-05,   1.91894433e-05]],

        [[  1.11233512e-05,   1.11953432e-05,   1.12811549e-05, ...,
            1.18980051e-05,   1.17948357e-05,   1.17032423e-05],
         [  1.13582855e-05,   1.14783606e-05,   1.15715811e-05, ...,
            1.20645609e-05,   1.19705282e-05,   1.19793885e-05],
         [  1.16060955e-05,   1.17187355e-05,   1.18003172e-05, ...,
            1.22693364e-05,   1.21751436e-05,   1.21983057e-05],
         ..., 
         [  1.25846527e-05,   1.26067989e-05,   1.26285504e-05, ...,
            1.48238769e-05,   1.49149628e-05,   1.50431233e-05],
         [  1.25382785e-05,   1.25461638e-05,   1.25521292e-05, ...,
            1.48886957e-05,   1.48824693e-05,   1.50240594e-05],
         [  1.24746939e-05,   1.24815242e-05,   1.24889502e-05, ...,
            1.49697698e-05,   1.49865618e-05,   1.49919279e-05]],

        [[  1.09042094e-05,   1.09004686e-05,   1.09165521e-05, ...,
            1.04535638e-05,   1.03410239e-05,   1.02591166e-05],
         [  1.09902248e-05,   1.10051133e-05,   1.10149240e-05, ...,
            1.05807248e-05,   1.04641204e-05,   1.04015626e-05],
         [  1.10735136e-05,   1.10870360e-05,   1.10913852e-05, ...,
            1.07103042e-05,   1.05859317e-05,   1.05122690e-05],
         ..., 
         [  1.03284328e-05,   1.03381863e-05,   1.03473421e-05, ...,
            1.14128425e-05,   1.14826653e-05,   1.15648718e-05],
         [  1.03127995e-05,   1.03160419e-05,   1.03177845e-05, ...,
            1.13847245e-05,   1.14094501e-05,   1.14950162e-05],
         [  1.02894919e-05,   1.02918875e-05,   1.02950453e-05, ...,
            1.13538918e-05,   1.13799833e-05,   1.14116574e-05]]],


       [[[  7.64434319e-03,   7.68154673e-03,   7.68637564e-03, ...,
            1.68169308e-02,   1.68444067e-02,   1.67893674e-02],
         [  7.36276666e-03,   6.49078889e-03,   6.40459219e-03, ...,
            1.65859219e-02,   1.66663006e-02,   1.67844370e-02],
         [  7.02097034e-03,   6.23182720e-03,   6.04115473e-03, ...,
            1.64176635e-02,   1.64555553e-02,   1.67789049e-02],
         ..., 
         [  1.75966846e-03,   1.76951592e-03,   1.80126168e-03, ...,
            7.52149988e-03,   7.95296114e-03,   8.91911052e-03],
         [  1.69154722e-03,   1.73664233e-03,   1.78396970e-03, ...,
            7.25830300e-03,   7.60271493e-03,   8.47872626e-03],
         [  1.68943231e-03,   1.72565016e-03,   1.73158431e-03, ...,
            7.38342339e-03,   7.68510532e-03,   8.02979525e-03]],

        [[  6.86013186e-03,   6.82850927e-03,   6.81801932e-03, ...,
            1.54059455e-02,   1.54225985e-02,   1.54651497e-02],
         [  6.61966251e-03,   6.08464750e-03,   6.02369988e-03, ...,
            1.56236282e-02,   1.55918971e-02,   1.54870758e-02],
         [  6.33246731e-03,   5.86036639e-03,   5.71869407e-03, ...,
            1.55340936e-02,   1.53715443e-02,   1.55030871e-02],
         ..., 
         [  1.93442765e-03,   1.89908245e-03,   1.89765554e-03, ...,
            7.13806599e-03,   7.50408228e-03,   8.07730947e-03],
         [  1.79104903e-03,   1.78031379e-03,   1.80753297e-03, ...,
            6.83973636e-03,   7.14330049e-03,   7.67422514e-03],
         [  1.70854351e-03,   1.71888224e-03,   1.73003552e-03, ...,
            6.73690997e-03,   7.00253667e-03,   7.35012442e-03]],

        [[  6.45101769e-03,   6.40743459e-03,   6.40982296e-03, ...,
            1.25798080e-02,   1.26027381e-02,   1.27383741e-02],
         [  6.23675529e-03,   5.87064819e-03,   5.82322339e-03, ...,
            1.32116014e-02,   1.30705759e-02,   1.28921419e-02],
         [  5.97557286e-03,   5.66114718e-03,   5.54814003e-03, ...,
            1.35336863e-02,   1.34170530e-02,   1.30835213e-02],
         ..., 
         [  1.84371776e-03,   1.83884322e-03,   1.87025685e-03, ...,
            6.89044641e-03,   7.20867235e-03,   7.51322648e-03],
         [  1.69426436e-03,   1.70297420e-03,   1.75128074e-03, ...,
            6.54307008e-03,   6.82769017e-03,   7.11912615e-03],
         [  1.63815636e-03,   1.63997361e-03,   1.66895997e-03, ...,
            6.23017410e-03,   6.47890521e-03,   6.80368207e-03]],

        ..., 
        [[  1.10413912e-05,   1.12094722e-05,   1.13843053e-05, ...,
            1.39257854e-05,   1.38320302e-05,   1.37122224e-05],
         [  1.14512113e-05,   1.17263735e-05,   1.19609595e-05, ...,
            1.41229384e-05,   1.40556012e-05,   1.42207546e-05],
         [  1.19251945e-05,   1.21954863e-05,   1.24191774e-05, ...,
            1.44072665e-05,   1.43580555e-05,   1.46243465e-05],
         ..., 
         [  1.51694821e-05,   1.51887270e-05,   1.52134207e-05, ...,
            1.89215862e-05,   1.89822986e-05,   1.91546969e-05],
         [  1.50382130e-05,   1.50448213e-05,   1.50551659e-05, ...,
            1.90942956e-05,   1.90743540e-05,   1.92059160e-05],
         [  1.48725594e-05,   1.49088091e-05,   1.49351772e-05, ...,
            1.92685529e-05,   1.92747193e-05,   1.92418684e-05]],

        [[  1.09417142e-05,   1.10131323e-05,   1.10989349e-05, ...,
            1.21039420e-05,   1.19894712e-05,   1.18816324e-05],
         [  1.11782192e-05,   1.13083333e-05,   1.14158856e-05, ...,
            1.22956089e-05,   1.21985977e-05,   1.22064957e-05],
         [  1.14446339e-05,   1.15709827e-05,   1.16699621e-05, ...,
            1.25208053e-05,   1.24265689e-05,   1.24623466e-05],
         ..., 
         [  1.25541264e-05,   1.25749630e-05,   1.25936294e-05, ...,
            1.48364497e-05,   1.49556781e-05,   1.50711649e-05],
         [  1.24808457e-05,   1.24875387e-05,   1.24936460e-05, ...,
            1.49123398e-05,   1.49171747e-05,   1.50548849e-05],
         [  1.23863229e-05,   1.24066291e-05,   1.24217877e-05, ...,
            1.50062269e-05,   1.50229143e-05,   1.50232327e-05]],

        [[  1.08565582e-05,   1.08453632e-05,   1.08554214e-05, ...,
            1.05499666e-05,   1.04178725e-05,   1.03201955e-05],
         [  1.09451330e-05,   1.09589155e-05,   1.09691209e-05, ...,
            1.07047044e-05,   1.05695190e-05,   1.04885248e-05],
         [  1.10344909e-05,   1.10477849e-05,   1.10530236e-05, ...,
            1.08571448e-05,   1.07149535e-05,   1.06184953e-05],
         ..., 
         [  1.03234188e-05,   1.03338316e-05,   1.03423235e-05, ...,
            1.14552668e-05,   1.15358271e-05,   1.15880293e-05],
         [  1.02995491e-05,   1.03020384e-05,   1.03034508e-05, ...,
            1.14071781e-05,   1.14430504e-05,   1.15144276e-05],
         [  1.02656450e-05,   1.02724816e-05,   1.02783151e-05, ...,
            1.13705819e-05,   1.13963497e-05,   1.14249269e-05]]]], dtype=float32)

In [14]:
ds.U.shape


Out[14]:
(13, 27, 60, 74)

The shape of U ndarray is as above


In [15]:
print(ds.U[3][26][59][70])


<xarray.DataArray 'U' ()>
array(17.00162696838379, dtype=float32)
Coordinates:
    Time            int64 3
    bottom_top      int64 26
    south_north     int64 59
    west_east_stag  int64 70
Attributes:
    FieldType: 104
    MemoryOrder: XYZ
    description: x-wind component
    units: m s-1
    stagger: X

Accessing a particular element value from the 4d array of variable "U". "3" corresponds to Times,"26" corresponds to bottom_top etc...


In [16]:
ds.U>=17


Out[16]:
<xarray.DataArray 'U' (Time: 13, bottom_top: 27, south_north: 60, west_east_stag: 74)>
array([[[[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        ..., 
        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]],

        [[ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]]],


       [[[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        ..., 
        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]],

        [[ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]]],


       [[[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        ..., 
        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True]],

        [[ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         ..., 
         [ True,  True,  True, ...,  True,  True, False],
         [ True,  True,  True, ...,  True,  True, False],
         [ True,  True,  True, ...,  True, False, False]]],


       ..., 
       [[[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        ..., 
        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]]],


       [[[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        ..., 
        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]]],


       [[[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        [[False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         ..., 
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False],
         [False, False, False, ..., False, False, False]],

        ..., 
        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]],

        [[ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         [ True,  True,  True, ...,  True,  True,  True],
         ..., 
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False],
         [ True,  True,  True, ..., False, False, False]]]], dtype=bool)
Coordinates:
  * Time            (Time) int64 0 1 2 3 4 5 6 7 8 9 10 11 12
  * bottom_top      (bottom_top) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...
  * south_north     (south_north) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...
  * west_east_stag  (west_east_stag) int64 0 1 2 3 4 5 6 7 8 9 10 11 12 13 ...

In [17]:
np.mean(ds.U)


Out[17]:
<xarray.DataArray 'U' ()>
array(13.469864845275879)

In [18]:
np.max(ds.U)


Out[18]:
<xarray.DataArray 'U' ()>
array(61.08497619628906)

In [19]:
import matplotlib.pyplot as plt

In [20]:
import xarray.plot as xplt

In [ ]:


In [ ]: