Basic Weather Parameters

Temperature

Immediate Temperature

Gives the instantaneous temperature at the indicated level above ground in the corresponding unit.

t_<level>:<unit>

Available levels (global): -150cm, -50cm, -15cm, -5cm, 0m, 2m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available units: C, K, F

Examples

Interval Values of the Temperature

Gives the mean, maximum or minimum temperature at the indicated level over the indicated duration.

t_<measure>_<level>_<interval>:<unit>

Available levels (global): -150cm, -50cm, -15cm, -5cm, 0m, 2m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available measures: mean, min, max

Available intervals: 1h - 24h (spacing: 1 h)

Available units: C, K, F

Examples

Humidity

Instantaneous Relative Humidity

Gives the instantaneous value of the relative humidity at the indicated level in percent.

relative_humidity_<level>:<unit>

Available levels (global): 2m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa

Available units: p

Examples

Interval Values of Relative Humidity

Gives the mean, maximum or minimum relative humidity at the indicated level over the indicated duration.

relative humidity_<measure>_<level>_<interval>:p

Available levels (global): 2m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa

Available measures: mean, min, max

Available intervals: 1h, 2h, 3h, 6h, 12h, 24h

Available units: p

Examples

Absolute Humidity

Gives the absolute humidity at 2m in [g/m3]. Note: the absolute humidity is only available at 2m.

absolute_humidity_2m:gm3

Examples

Dew Point

Instantaneous Dew Point

Gives the instantaneous value of the dew point temperature at the indicated level.

dew_point_<level>:<unit>

Available levels (global): 2m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa

Available units: C, F, K

Example

Interval Values of Dew Point

Gives the mean, maximum or minimum dew point at the indicated level over the indicated duration.

dew_point_<measure>_<level>_<interval>:p

Available levels (global): 2m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa

Available measures: mean, min, max

Available intervals: 1h, 2h, 3h, 6h, 12h, 24h

Available units: C, F, K

Examples

Atmospheric Pressure and Density

The computation of pressure parameters is based on data of NASA's SRTM digital elevation model, where it is available (between 60°N and 60°S). Model topography is used elsewhere.

Pressure Adjusted to Sea Level

Gives the pressure adjusted to sea level.

msl_pressure:<unit>

Available units: hPa, Pa

Examples

Surface Pressure

Gives the surface pressure.

sfc_pressure:<unit>

Available units: hPa, Pa

Examples

Surface Pressure Mean

Gives the surface pressure mean over the given interval.

sfc_pressure_mean_<interval>:<unit>

Available intervals: 1h - 24h (spacing: 1 h)

Available units: hPa, Pa

Examples

Pressure at Higher Altitudes

The atmospheric pressure is available at any height level above ground up to 10 km.

pressure_<level>:<unit>

Available altitude levels: 1m - 10000m (continuously)

The level can be combined with the mean over a time interval.

pressure_mean_<level>_<interval>:<unit>

Available intervals: 1h - 24h (spacing: 1 h)

Available units: hPa, Pa

Atmospheric Density

The density of air at any height level above ground up to 10 km.

air_density_<level>:<unit>

Available altitude levels: 2m - 10000m (continuously)

Available units: kgm3

air_density_mean_<level>_<time>:<unit>

Available intervals: 1h - 24h (spacing: 1 h)

Available units: kgm3

Wind

Instantaneous Wind Speed

Gives the instantaneous wind speed at the indicated level.

wind_speed_<level>:<unit>

Available altitude levels: 10m - 10000m (continuously)

Available pressure levels (global): 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available speed units: ms, kmh, mph, kn, bft

Examples

Instantaneous Wind Direction

Gives the instantaneous wind direction at the indicated height in degrees from North. For example, a direction of 45 degrees means that the wind is coming from the Northeast.

wind_dir_<level>:d

Available altitudes levels: 10m - 10000m (continuously)

Available pressure levels (global): 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Examples

  • Generate a csv file comparing the wind direction at 10m and 700hPa

    https://api.meteomatics.com/__replace__0T00:00:00ZP2D:PT3H/wind_dir_10m:d,wind_dir_700hPa:d/47.412164,9.340652/csv

    validdate;wind_dir_10m:d;wind_dir_700hPa:d
    2017-08-03T00:00:00Z;163.8;250.2
    2017-08-03T03:00:00Z;170;239.2
    2017-08-03T06:00:00Z;191.3;228.8
    2017-08-03T09:00:00Z;244;231.8
    2017-08-03T12:00:00Z;239.4;239
    2017-08-03T15:00:00Z;243.1;241.6
    2017-08-03T18:00:00Z;234.2;247.2
    2017-08-03T21:00:00Z;240.9;250.6
    2017-08-04T00:00:00Z;249.1;248.1
    2017-08-04T03:00:00Z;240.9;221.1
    2017-08-04T06:00:00Z;263.2;226.2
    2017-08-04T09:00:00Z;319.4;236.3
    2017-08-04T12:00:00Z;322.3;257.1
    2017-08-04T15:00:00Z;314.4;255.2
    2017-08-04T18:00:00Z;301.4;256.8
    2017-08-04T21:00:00Z;269.8;260
    2017-08-05T00:00:00Z;172.2;252.3

Wind Speed: u and v components

Gives the immediate wind u and v components at the indicated level.

wind_speed_u_<level>:<unit>

wind_speed_v_<level>:<unit>

Components (surface level, u is positive for a west to east flow, v is positive for a south to north flow).

Available altitudes levels: 10m - 10000m (continuously)

Available pressure levels (global): 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available speed units: ms, kmh, mph, kn, bft

Examples

Wind Speed: vertical component (w)

Gives the immediate vertical wind component at the indicated level.

wind_speed_w_<level>:Pas

Negative values denote rising motions and positive values denote descending motions.

Available pressure levels (global): 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa

Available speed units: Pas

Examples

Interval Wind Speed

Gives the mean, maximum or minimum wind speed over the specified interval at the indicated level.

wind_speed_<measure>_<level>_<interval>:<unit>

Available levels (global): 10m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available measures: mean, min, max

Available Intervals: 1h, 3h, 6h, 12h, 24h

Available speed units: ms, kmh, mph, kn, bft

Examples

Interval Wind Gusts

Gives the wind gusts over the specified interval at the indicated level:

wind_gusts_<level>_<interval>:<unit>

Available levels (global): 10m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available intervals: 1h, 3h, 6h, 12h, 24h

Available speed units: ms, kmh, mph, kn, bft

Examples

Interval Wind Direction

Gives the mean wind direction over the specified interval at the indicated height in degrees:

wind_dir_mean_<level>_<interval>:d

Available levels (global): 10m - 10000m (continuously), 1000hPa, 950hPa, 925hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Available intervals: 1h, 3h, 6h, 12h, 24h

Examples

Clouds

Amount of Cloud Cover

Gives the amount of cloud cover in percent or octas.

<level>_cloud_cover:<unit>

Available levels: low, medium, high, total, effective

Available units: octas, p

Examples

  • Generate a csv file containing the amount of cloud cover in octas for every grid point of the specified area.

    https://api.meteomatics.com/__replace__0T12:00:00Z/effective_cloud_cover:octas/50,5_35,20:1,1/csv

    validdate;2017-08-03 12:00:00
    parameter;effective_cloud_cover:octas
    data;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20
    50;1;8;4;5;4;8;8;8;8;8;8;8;5;1;0;0
    49;7;5;6;4;8;5;2;4;4;3;8;0;6;0;0;0
    48;3;5;6;6;1;2;5;2;4;1;1;0;1;0;0;0
    47;2;5;3;4;1;0;2;0;1;1;0;0;0;0;0;0
    46;0;0;0;3;0;0;0;0;0;0;0;0;0;0;0;0
    45;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
    44;0;0;3;0;0;0;0;0;0;0;0;0;0;0;0;2
    43;0;1;0;0;0;0;0;0;1;0;0;0;0;0;2;1
    42;0;1;1;0;0;0;0;0;0;0;0;0;0;0;0;6
    41;0;4;1;0;0;0;0;0;0;0;0;0;0;0;1;1
    40;0;0;0;0;0;0;0;0;0;0;0;0;0;0;1;0
    39;0;0;0;0;0;0;0;0;0;0;0;2;0;0;1;0
    38;2;0;0;0;0;0;0;0;0;0;0;0;0;0;4;0
    37;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
    36;0;0;0;0;0;0;0;6;0;0;0;0;0;0;0;0
    35;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0
  • Show a GrADS plot of Europe with the amount of total cloud cover in percent.

    https://api.meteomatics.com/now/total_cloud_cover:p/europe/grads?model=ecmwf-ifs

Ceiling Height

The ceiling height is an important parameter in aviation and is defined as the height of the lowest cloud layer covering more than half of the sky.

ceiling_height_agl:<unit>

Units: m, ft

Examples

Cloud Base

The cloud base gives the lowest altitude of the visible portion of a cloud.

cloud_base_agl:<unit>

Units: m, ft

Examples

Precipitation

Accumulated Precipitation

Gives the amount of precipitation in millimeters that has fallen during the indicated interval.

precip_<interval>:mm

Available accumulation intervals: 5min, 10min, 15min, 30min, 1h, 3h, 6h, 12h, 24h

Note: Precipitation interval parameters are right-aligned see Appendix

Examples

Precipitation Type

You can query an integer indicating the precipitation type with the parameter

precip_type:idx

The values correspond translate to the type as given in the following table:

Index Precipitation Type
0 None
1 Rain
2 Rain and snow mixed
3 Snow
4 Sleet
5 Freezing rain

It is based on the precipitation during the last 5 minutes, where very small amounts are ignored. For hail please refer to the dedicated section below.

Examples

For visualization purposes you may query an image for the parameter

precip_layer_5min:idx

together with the colormap png_precip_type_segmented (the use of other colormaps is highly discouraged). It combines the precipitation type above with the water equivalent of precipitation fallen during the last 5 minutes.

For the interpretation of the image please refer to the following legend graphic:

Example

  • Rain over the North Sea with rain and snow mixed or snow over parts of the Scottish Highlands:

Rain Water

rain_water:kgm2

You can query the vertically integrated precipitating rain water content.

Examples

Snow Water

snow_water:kgm2

You can query the vertically integrated precipitating snow water content.

Examples

Precipitation Probability

prob_precip_<interval>:p

Available intervals: 5min, 10min, 15min, 30min, 1h, 3h, 6h, 12h, 24h

Note: Please note that since this parameter is based on multiple models, it does not fulfill all mathematical requirements of a probability.

Note: Precipitation interval parameters are right-aligned see Appendix

Examples

Hail

The API features a hail parameter describing the maximum size of the hailstones.

Instantaneous value:

hail:cm

Risk over a temporal interval:

hail_<interval>:cm

Available intervals: 10min, 20min, 30min, 1h, 3h, 6h, 12h, 24h

Examples

Response:

<meteomatics-api-response version="3.0">
<user>meteomatics-admin</user>
<dateGenerated>2018-06-06T19:02:48Z</dateGenerated>
<status>OK</status>
<data>
<parameter name="hail:cm">
<location lat="47.4066" lon="9.17683">
<value date="2018-05-31T16:00:00Z">0.00000</value>
<value date="2018-05-31T16:05:00Z">0.00000</value>
<value date="2018-05-31T16:10:00Z">1.00000</value>
<value date="2018-05-31T16:15:00Z">5.00000</value>
<value date="2018-05-31T16:20:00Z">5.00000</value>
<value date="2018-05-31T16:25:00Z">5.00000</value>
<value date="2018-05-31T16:30:00Z">0.00000</value>
<value date="2018-05-31T16:35:00Z">0.00000</value>
<value date="2018-05-31T16:40:00Z">0.00000</value>
<value date="2018-05-31T16:45:00Z">0.00000</value>
<value date="2018-05-31T16:50:00Z">0.00000</value>
<value date="2018-05-31T16:55:00Z">0.00000</value>
<value date="2018-05-31T17:00:00Z">0.00000</value>
</location>
</parameter>
</data>
</meteomatics-api-response>

Supercooled Liquid Water

super_cooled_liquid_water:kgm2

You can query the vertically integrated supercooled cloud liquid water content below 0 °C.

Examples

Evaporation

Accumulated Evaporation

Gives the accumulated amount of evaporation in millimeters for 1, 3, 6, 12 and 24 hour intervals. The amount of evaporation depends on factors such as cloudiness, air temperature and wind speed.

evaporation_<interval>:<unit>

Available intervals: 1h, 3h, 6h, 12h, 24h

Available units: mm

Examples

Atmospheric Stability

Convective Available Potential Energy (CAPE)

The convective available potential energy (given in joules per kilogram air) is the amount of energy a parcel of air would have if lifted a certain distance vertically through the atmosphere. Any value greater than 0 J/kg indicates instability and an increasing probability of thunderstorms and hail.

cape:Jkg

Examples

Lifted Index

The lifted index (given in Kelvin) is the difference between the temperature of the environment and that of an air parcel lifted adiabatically to a given pressure height in the troposphere, usually 500 hPa. The atmosphere at the given height is stable for positive values of the lifted index and unstable for negative values. When the value falls below -2, thunderstorms are anticipated. and for lower values, especially those below -6, severe weather is expected.

lifted_index:K

Examples

Thunderstorm Probabilities

Gives the probability of a thunderstorm to occur.

prob_tstorm_<interval>:p

Available intervals: 1h, 3h, 6h, 12h, 24h

Examples

  • Show a thunderstorm probability forecast for the next two days.

    https://api.meteomatics.com/__replace__0T00:00:00ZP2D:PT1H/prob_tstorm_1h:p/47.412164,9.340652/html

  • Below is an image of the thunderstorm probabilities on August 1st at 18:00 over Europe (70°,-15° to 35°,30°).

    https://api.meteomatics.com/now/prob_tstorm_1h:p/70,-15_35,30:0.1,0.1/html

  • https://api.meteomatics.com/now/prob_tstorm_12h:p/70,-15_35,30:15,15/json

    {"version":"3.0","user":"api-test","dateGenerated":"2018-02-21T14:51:41Z","status":"OK","data":
    [{"parameter":"prob_tstorm_12h:p","coordinates":
    [{"lat":35,"lon":-15,"dates":[{"date":"2017-08-01T00:00:00Z","value":12.9}]},
    {"lat":35,"lon":0,"dates":[{"date":"2017-08-01T00:00:00Z","value":44.2}]},
    {"lat":35,"lon":15,"dates":[{"date":"2017-08-01T00:00:00Z","value":23.4}]},
    {"lat":35,"lon":30,"dates":[{"date":"2017-08-01T00:00:00Z","value":86.4}]},
    {"lat":50,"lon":-15,"dates":[{"date":"2017-08-01T00:00:00Z","value":16.1}]},
    {"lat":50,"lon":0,"dates":[{"date":"2017-08-01T00:00:00Z","value":14.3}]},
    {"lat":50,"lon":15,"dates":[{"date":"2017-08-01T00:00:00Z","value":22.2}]},
    {"lat":50,"lon":30,"dates":[{"date":"2017-08-01T00:00:00Z","value":11.4}]},
    {"lat":65,"lon":-15,"dates":[{"date":"2017-08-01T00:00:00Z","value":11.8}]},
    {"lat":65,"lon":0,"dates":[{"date":"2017-08-01T00:00:00Z","value":13.6}]},
    {"lat":65,"lon":15,"dates":[{"date":"2017-08-01T00:00:00Z","value":21.5}]},
    {"lat":65,"lon":30,"dates":[{"date":"2017-08-01T00:00:00Z","value":17}]}]}]}

Snow and Frost

Frost Depth

Gives the frost depth in centimeters.

frost_depth:cm

Examples

  • Time series showing the frost depth for Berlin in mid February in 2020:

    Current situation:
    https://api.meteomatics.com/__replace__0T00ZP5D:PT1H/frost_depth:cm/52.5065133,13.1445545/html

  • An output of the corresponding csv file.

    validdate;frost_depth:cm
    2017-08-25T00:00:00Z;3
    2017-08-25T01:00:00Z;3.7
    2017-08-25T02:00:00Z;4.5
    2017-08-25T03:00:00Z;4.6
    2017-08-25T04:00:00Z;4.6
    2017-08-25T05:00:00Z;4.7
    2017-08-25T06:00:00Z;4.4
    2017-08-25T07:00:00Z;1.7
    2017-08-25T08:00:00Z;0.4
    2017-08-25T09:00:00Z;0.1
    2017-08-25T10:00:00Z;0

Soil Frost

This parameter provides the probability in percent for the occurrence of soil frost based on surface and ground temperatures.

soil_frost:p

Examples

Amount of Snow Melt

Following parameter returns the snow height that melted within the given interval, i.e. the difference in snow height in cm:

snow_melt_<interval>:cm

Following paramter returns the height of the water equivalent of the melted snow in mm (that is the same as l/m²). Please note that it is not the height of the snow cover in mm.

snow_melt_<interval>:mm

Available intervals: 1h, 3h, 6h, 12h, 24h

Examples

Amount of Fresh Snow

Gives the amount in centimeters of fresh snow accumulated on the ground during the indicated time interval.

fresh_snow_<interval>:cm

Available intervals: 1h, 3h, 6h, 12h, 24h

Examples

Snow Depth

Gives the snow depth in centimeters.

snow_depth:cm

Examples

Snow Water Equivalent

Gives the snow height in mm water equivalent.

snow_water_equivalent:mm

Examples

Snow Density

Gives the snow density in kg m-3.

snow_density:kgm3

Examples

Snowfall Probability

This index provides the probability in percent for precipitation to occur in the form of snow.

snow_fall:p

Examples

Radiation

Note: All radiation parameters are normalized on one square meter. The effective unit therefore is W/m2 or J/m2, respectively.

Clear Sky Radiation: Instantaneous Flux

Gives the instantaneous flux of clear sky radiation in Watts per square meter.

clear_sky_rad:W

Examples

Diffuse Radiation: Instantaneous flux

Gives the instantaneous flux of diffuse radiation in Watts per square meter.

diffuse_rad:W

Examples

Direct Radiation: Instantaneous Flux

Gives the instantaneous flux of direct radiation in Watts per square meter.

direct_rad:W

Examples

Global Radiation: Instantaneous Flux

Gives the instantaneous flux of global radiation (diffuse + direct radiation) in Watts per square meter.

global_rad:W

Examples

Accumulated Energy

Gives the accumulated energy of direct, diffuse or global radiation in Ws, Wh or J per square meter.

<type>_rad_<interval>:<unit>

Available type: global, direct, diffuse

Available intervals: 1h, 3h, 6h, 12h, 24h

Available units: Ws, Wh, J

Examples

  • Show the direct, diffuse and global radiation accumulated over one hour intervals for the next five days.

    https://api.meteomatics.com/__replace__0T00:00:00ZP5D:PT1H/direct_rad_1h:J,diffuse_rad_1h:J,global_rad_1h:J/50,10/html

  • https://api.meteomatics.com/__replace__0T00:00:00ZP1D:PT8H/direct_rad_1h:J,diffuse_rad_1h:J,global_rad_1h:J/50,10/json

    {"version":"3.0","user":"api-test","dateGenerated":"2018-02-07T15:28:54Z","status":"OK","data":
    [{"parameter":"direct_rad_1h:J","coordinates":[{"lat":50,"lon":10,"dates":
    [{"date":"2018-02-05T00:00:00Z","value":0},{"date":"2018-02-05T08:00:00Z","value":60676.4},
    {"date":"2018-02-05T16:00:00Z","value":17505.2},{"date":"2018-02-06T00:00:00Z","value":0}]}]},
    {"parameter":"diffuse_rad_1h:J","coordinates":[{"lat":50,"lon":10,"dates":
    [{"date":"2018-02-05T00:00:00Z","value":0},{"date":"2018-02-05T08:00:00Z","value":40723.3},
    {"date":"2018-02-05T16:00:00Z","value":73051.6},{"date":"2018-02-06T00:00:00Z","value":0}]}]},
    {"parameter":"global_rad_1h:J","coordinates":[{"lat":50,"lon":10,"dates":
    [{"date":"2018-02-05T00:00:00Z","value":0},{"date":"2018-02-05T08:00:00Z","value":101399.7},
    {"date":"2018-02-05T16:00:00Z","value":90556.8},{"date":"2018-02-06T00:00:00Z","value":0}]}]}]}

Clear Sky Radiation: Accumulated Energy

Gives the accumulated clear sky flux over the given interval in Joules per square meter.

clear_sky_energy_<interval>:J

Available intervals: 1h, 3h, 6h, 12h, 24h

Examples

  • Show the expected accumulated clear sky energy for the next two days.

    https://api.meteomatics.com/__replace__0T00:00:00ZP2D:PT1H/clear_sky_energy_1h:J/47.412164,9.340652/html

  • A short part of the corresponding csv:

    validdate;clear_sky_energy_1h:J
    2018-08-03T03:00:00Z;0
    2018-08-03T04:00:00Z;0
    2018-08-03T05:00:00Z;99322
    2018-08-03T06:00:00Z;595481
    2018-08-03T07:00:00Z;1292134
    2018-08-03T08:00:00Z;1990880.5
    2018-08-03T09:00:00Z;2605813.1
    2018-08-03T10:00:00Z;3082453.7
    2018-08-03T11:00:00Z;3383074.9
    2018-08-03T12:00:00Z;3484897.5

Other Meteorological Parameters

Geopotential Height

Gives the geopotential height in meters at the indicated level. The geopotential height differs from geometric height (elevation above sea level) and takes into account the variation of gravity with latitude and elevation.

geopotential_height_<level>:m

Available levels (global): 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa, 250hPa, 200hPa, 150hPa, 100hPa, 70hPa, 50hPa, 10hPa

Examples

Water Vapor Mixing Ratio

Gives the mixing ratio of water vapor and dry air at the indicated level in kg water vapor per kg dry air.

mixing_ratio_<level>:kgkg

Available levels (global): 1000hPa, 950hPa, 925hPa, 900hPa, 850hPa, 800hPa, 700hPa, 500hPa, 300hPa

Examples