GEOS–Chem v9–02 Online User's Guide

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Appendix 4: GEOS–Chem Meteorological Fields

We compare the meteorological data products that GEOS–Chem reads from disk.

A4.1 GCAP fields used by GEOS–Chem

NOTES about GCAP met fields:

- A3 fields are 3-hour time averages, centered on 01:30 04:30 07:30 ... 22:30 GMT
- A6 fields are 6-hour time averages, centered on 00:00 06:00 12:00 18:00 GMT
- I6 fields are 6-hour instantaneous fields, centered on 00:00 06:00 12:00 18:00 GMT
- Constant fields are time-invariant
- Please see the GCAP page on the GEOS-Chem Wiki for more information.

Field | Type | Dimension | Quantity | Units |
---|---|---|---|---|

ALBEDO | A3 | 2-D | Surface albedo | 1 |

PREACC | A3 | 2-D | Total precipitation | mm day^{-1} |

PRECON | A3 | 2-D | Convective precipitation | mm day^{-1} |

TS | A3 | 2-D | Surface temprature | K |

MOLENGTH | A3 | 2-D | Monin-Obhukov length | m |

USTAR | A3 | 2-D | Friction velocity | m s^{-1} |

PBL | A3 | 2-D | Boundary layer height | m |

RADSWG | A3 | 2-D | Incident radiation at ground | W m^{-2} |

SNICE | A3 | 2-D | Fraction of box covered w/ snow, land, or ocean ice | 1 |

OICE | A3 | 2-D | Ocean or lake ice fraction | 1 |

USS | A3 | 2-D | Zonal wind at 10m above surface | m s^{-1} |

VSS | A3 | 2-D | Meridional wind at 10m above the surface | m s^{-1} |

SOIL | A3 | 2-D | Volumetric water content | m^{3} m^{-3} |

SNOWD | A3 | 2-D | Snow depth | m |

PARDIR | A3 | 2-D | Direct photosynthetically-active radiation | W m^{-2} |

PARDIF | A3 | 2-D | Diffuse photosynthetically-active radiation | 1 |

T | A6 | 3-D | Temperature | K |

U | A6 | 3-D | Zonal wind | m s^{-1} |

V | A6 | 3-D | Meridional wind | m s^{-1} |

OPTDEPTH | A6 | 3-D | Optical depth | 1 |

CLDF | A6 | 3-D | Cloud fraction | 1 |

Q | A6 | 3-D | Specific humidity | kg kg^{-1} |

MOISTQ | A6 | 3-D | Tendency of Q w/r/t precipitation | g kg^{-1} day^{-1} |

UPDE | A6 | 3-D | Convective updraft flux | Pa s^{-1} |

DNDE | A6 | 3-D | Convective downdraft flux | Pa s^{-1} |

ENTRAIN | A6 | 3-D | Convective entrainment | Pa s^{-1} |

DETRAINE | A6 | 3-D | Convective detrainment | Pa s^{-1} |

UPDN | A6 | 3-D | Convective updraft flux (non-entraining plume) | Pa s^{-1} |

DNDN | A6 | 3-D | Convective downdraft flux (non-entraining plume) | Pa s^{-1} |

DETRAINN | A6 | 3-D | Convective detrainment (non-entraining plume) | Pa s^{-1} |

PS | I6 | 2-D | Surface pressure | hPa |

SLP | I6 | 2-D | Sea-level pressure | hPa |

PHIS | Constant | 2-D | Surface geopotential heights | m^{-2} s^{-2} |

LWI | Constant | 2-D | Land fraction | 1 |

A4.2 GEOS–4 fields used by GEOS–Chem

NOTES for GEOS–4 fields:

- A-3 fields are 3-hour time-averages, centered on 01:30, 04:30, 07:30, ... 22:30 GMT.
- A-6 fields are 6-hour time-averages, centered on 00:00, 06:00, 12:00, and 18:00 GMT.
- I-6 fields are 6-hour instantaneous data at 00:00, 06:00, 12:00, and 18:00 GMT.
- The air temperature at 2 meters is used as a proxy for the surface air temperature.
- Skin temperature is the temperature of the ground (or ocean) surface.
- Please see the GEOS–4 page on the GEOS-Chem Wiki for more information.

Field | Type | Dimension | Quantity | Units |
---|---|---|---|---|

LWI | I6 | 2-D | Land-water-ice flags | 1 |

PHIS | I6 | 2-D | Surface geopotential heights | m^{2} s^{-2} |

PS | I6 | 2-D | Surface pressure | hPa |

SLP | I6 | 2-D | Sea level pressure | hPa |

CLDTOT | A6 | 3-D | 3-D cloud fraction (conv + large scale) | 1 |

HKBETA | A6 | 3-D | Hack overshoot parameter | 1 |

HKETA | A6 | 3-D | Hack convective mass flux | kg m^{-2 }s^{-1} |

MOISTQ | A6 | 3-D | Tendency in specific humidity | g kg^{-1} day^{-1} |

OPTDEPTH | A6 | 3-D | Grid box optical depth | 1 |

Q | A6 | 3-D | Specific humidity | g kg^{-1} |

T | A6 | 3-D | Temperature | K |

U | A6 | 3-D | Zonal wind | m s^{-1} |

V | A6 | 3-D | Meridional wind | m s^{-1} |

ZMEU | A6 | 3-D | Zhang-McFarlane updraft entrainment | Pa s^{-1} |

ZMMD | A6 | 3-D | Zhang-McFarlane downdraft mass flux | Pa s^{-1} |

ZMMU | A6 | 3-D | Zhang-McFarlane updraft mass flux | Pa s^{-1} |

ALBEDO | A3 | 2-D | Surface albedo (visible) | 1 |

CLDFRC | A3 | 2-D | Column cloud fraction at ground | 1 |

GWETTOP | A3 | 2-D | Top soil wetness | 1 |

HFLUX | A3 | 2-D | Sensible heat flux | W m^{-2} |

LAI | A3 | 2-D | Leaf area indices | % |

PARDF | A3 | 2-D | Photosynthetically active diffuse radiation | W m^{-2} |

PARDR | A3 | 2-D | Photosynthetically active direct radiation | W m^{-2} |

PBLH | A3 | 2-D | Planetary boundary layer depth | m |

PREACC | A3 | 2-D | Total precipitation at ground | mm day^{-1} |

PRECON | A3 | 2-D | Convective precipitation at ground | mm day^{-1} |

RADLWG | A3 | 2-D | Longwave (IR) radiation emanating from the ground | W m^{-2} |

RADSWG | A3 | 2-D | Solar insolation (shortwave) reaching the ground | W m^{-2} |

SNOW | A3 | 2-D | Snow depth (equivalent water) | mm H2O |

T2M | A3 | 2-D | Air temperature at 2 meter elevation | K |

TSKIN | A3 | 2-D | Skin temperature (ground T or sea surface T) | K |

U10M | A3 | 2-D | UWND at 10 m altitude | m s^{-1} |

USTAR | A3 | 2-D | Friction velocity | m s^{-1} |

V10M | A3 | 2-D | VWND at 10 m altitude | m s^{-1} |

Z0M | A3 | 2-D | Roughness height | m |

A4.3 GEOS–5 fields used by GEOS–Chem

NOTES about GEOS–5 met fields:

- A3 fields are 3-hour time averages, centered on 01:30 04:30 07:30 ... 22:30 GMT
- A6 fields are 6-hour time averages, centered on 00:00 06:00 12:00 18:00 GMT
- I6 fields are 6-hour instantaneous fields, centered on 00:00 06:00 12:00 18:00 GMT
- NOTE: Relative Humidity in the GEOS–5 "raw data files" is labeled as "percent" but is actually "fraction" (unitless).
- Please see the GEOS–5 page on the GEOS-Chem Wiki for more information.

Field | Type | Dimension | Quantity | Units |
---|---|---|---|---|

ALBEDO | A3 | 2-D | Surface albedo | 1 |

CLDTOT | A3 | 2-D | Column cloud fraction | 1 |

EFLUX | A3 | 2-D< | Latent heat flux | W m^{-2} |

EVAP | A3 | 2-D | Evapotranspiration flux | 1 |

FRLAKE | A3 | 2-D | Fraction of lake | 1 |

FRLAND | A3 | 2-D | Fraction of land | 1 |

FRLANDIC | A3 | 2-D | Fraction of land ice | 1 |

FROCEAN | A3 | 2-D | Fraction of ocean | 1 |

GRN | A3 | 2-D | Greenness index | 1 |

GWETROOT | A3 | 2-D | Root zone soil wetness | 1 |

GWETTOP | A3 | 2-D | Top soil wetness | 1 |

HFLUX | A3 | 2-D | Sensible heat flux | W m^{-2} |

LAI | A3 | 2-D | Leaf area index | m^{2} m^{-2} |

LWGNET | A3 | 2-D | Net longwave radiation at ground | W m^{-2} |

LWTUP | A3 | 2-D | Outgoing longwave radiation | W m^{-2} |

PARDF | A3 | 2-D | Diffuse photosnythetically-active radiation | W m^{-2} |

LWTUP | A3 | 2-D | Outgoing longwave radiation | W m^{-2} |

PARDR | A3 | 2-D | Direct photosynthetically-active radiation | W m^{-2} |

PBLH | A3 | 2-D | Planetary boundary layer thickness | m |

PRECANV | A3 | 2-D | Anvil precipitation | kg m^{-2 }s^{-1 } |

PRECCON | A3 | 2-D | Total convective precipitation at the ground | kg m^{-2 }s^{-1 } |

PRECTOT | A3 | 2-D | Total precipitation at the ground | kg m^{-2 }s^{-1 } |

PRECSNO | A3 | 2-D | Total snow precipitation at the ground | kg m^{-2 }s^{-1 } |

QV2M | A3 | 2-D | Specific humidity at 2m | kg kg^{-1 } |

SNOMAS | A3 | 2-D | Snow depth (H2O equivalent) | m |

SNODP | A3 | 2-D | Snow depth (geometric) | m |

SWGNET | A3 | 2-D | Net shortwave radiation at ground | W m^{-2} |

T2M | A3 | 2-D | Temperature at 2m above ground | K |

TROPP | A3 | 2-D | Tropopause pressure | hPa |

TSKIN | A3 | 2-D | Ground (skin) temperature | K |

U10M | A3 | 2-D | Zonal wind at 10m above ground | m/s |

USTAR | A3 | 2-D | Friction velocity | m/s |

V10M | A3 | 2-D | Meridional wind at 10m above ground | m/s |

Z0M | A3 | 2-D | Roughness height | m |

DQRCON | A6 | 3-D | Precipitation from convective processes | kg m^{-2} s^{-1} |

DQRLSC | A6 | 3-D | Precipitation from large-scale processes | kg m^{-2} s^{-1} |

DTRAIN | A6 | 3-D | Detrainment mass flux | kg m^{-2} s^{-2} |

QL | A6 | 3-D | Water mixing ratio | 1 |

QI | A6 | 3-D | Ice mixing ratio | 1 |

OPTDEPTH | A6 | 3-D | Overall grid-box optical depth | 1 |

TAUCLI | A6 | 3-D | Grid-box optical depth, ice-path | 1 |

TAUCLW | A6 | 3-D | Grid-box optical depth, water-path | 1 |

CLOUD | A6 | 3-D | Cloud fraction | 1 |

PV | A6 | 3-D | Ertel potential vorticity | K m^{2 }kg^{-1} s^{-1} |

OMEGA | A6 | 3-D | Vertical pressure velocity | Pa s^{-1} |

QV | A6 | 3-D | Specific humidity | kg kg^{-1} |

RH | A6 | 3-D | Relative Humidity | 1 |

T | A6 | 3-D | Temperature | K |

U | A6 | 3-D | Zonal wind | m s^{-1} |

V | A6 | 3-D | Meridional wind | m s^{-1} |

DQIDTMST | A6 | 3-D | Tendency of QV in ice processes | kg kg^{-1} s^{-1} |

DQLDTMST | A6 | 3-D | Tendency of QV in moist processes | kg kg^{-1} s^{-1} |

DQVDTMST | A6 | 3-D | Tendency of QV in vapor processes | kg kg^{-1} s^{-1} |

MOISTQ | A6 | 3-D | Overall tendency of QV | kg kg^{-1} s^{-1} |

CMFMC | A6 | 3-D | Convective mass flux | kg kg^{-1} s^{-1} |

LWI | I6 | 2-D | Land/water/ice flags | m s^{-1} |

PS | I6 | 2-D | Surface pressure | hPa |

SLP | I6 | 2-D | Sea-level pressure | hPa |

TO3 | I6 | 2-D | Total ozone column | Dobsons |

TTO3 | I6 | 2-D | Tropospheric ozone column | Dobsons |

A4.4 GEOS–FP fields used by GEOS–Chem

Notes about GEOS–FP met fields:

- A1 fields are 1-hr time-averaged fields with timestamps (i.e. center of averaging period): 00:30, 01:30, 02:30 ... 23:30 GMT
- A3 fields are 3-hr time-averaged fields with timestamps (i.e. center of averaging period): 01:30, 04:30, 07:30, 10:30, 13:30, 16:30, 19:30, 22:30 GMT
- I3 fields 3-hr instantaneous fields with timestamps: 00:00, 03:00, 06:00, 09:00, 12:00, 15:00, 18:00, 21:00 GMT.
- Constant fields are time-invariant.
- For more information about the GEOS–FP raw data, please see the GEOS–FP page on the GEOS–Chem wiki.
- For detailed information about how the individual GEOS–FP fields were regridded, see the List of GEOS–FP met fields page on the GEOS–Chem wiki.

Field | Type | Dimension | Units | Quantity |
---|---|---|---|---|

FRLAKE | Constant | 2-D | Fraction of lake type in grid box | 1 |

FRLAND | Constant | 2-D | Fraction of land type in grid box | 1 |

FRLANDIC | Constant | 2-D | Fraction of land ice type in grid box | 1 |

FROCEAN | Constant | 2-D | Fraction of ocean in grid box | 1 |

PHIS | Constant | 2-D | Surface geopotential | m^{2} s^{-2} |

ALBEDO | A1 | 2-D | Surface albedo | 1 |

CLDTOT | A1 | 2-D | Total cloud fraction | 1 |

EFLUX | A1 | 2-D | Latent heat flux (positive upward) | W m^{-2} |

EVAP | A1 | 2-D | Surface evaporation | kg m^{-2} s^{-2} |

FRSEAICE | A1 | 2-D | Fraction of sea ice | 1 |

FRSNO | A1 | 2-D | Fractional snow-covered area | 1 |

GRN | A1 | 2-D | Vegetation greenness fraction | 1 |

GWETROOT | A1 | 2-D | Root zone soil wetness | 1 |

GWETTOP | A1 | 2-D | Top soil wetness | 1 |

HFLUX | A1 | 2-D | Sensible heat flux (positive upward) | W m^{-2} |

LAI | A1 | 2-D | Leaf area index | m^{2} m^{-2} |

LWGNT | A1 | 2-D | Surface net downward longwave flux | W m^{-2} |

LWI | A1 | 2-D | Land/water/ice flags | 1 |

LWTUP | A1 | 2-D | Upward longwave flux at top of atmosphere (TOA) | W m^{-2} |

PARDF | A1 | 2-D | Surface downward PAR diffuse flux | W m^{-2} |

PARDR | A1 | 2-D | Surface downward PAR beam flux | W m^{-2} |

PBLH | A1 | 2-D | Planetary boundary layer height above surface | m |

PRECANV | A1 | 2-D | Surface precipitation flux from anvils | kg m^{-2} s^{-2} |

PRECCON | A1 | 2-D | Surface precipitation flux from convection | kg m^{-2} s^{-2} |

PRECLSC | A1 | 2-D | Surface precipitation flux from large-scale | kg m^{-2} s^{-2} |

PRECSNO | A1 | 2-D | Surface snowfall flux | kg m^{-2} s^{-2} |

PRECTOT | A1 | 2-D | Total surface precipitation flux | kg m^{-2} s^{-2} |

QV2M | A1 | 2-D | Specific humidity at 2 m above the displacement height | kg kg^{-1} |

Q850 | A1 | 2-D | Specific humidity at 850 hPa | kg kg^{-1} |

SEAICE00 | A1 | 2-D | Fraction of grid box that has < 10% sea ice coverage | 1 |

SEAICE10 | A1 | 2-D | Fraction of grid box that has 10-20% sea ice coverage | 1 |

SEAICE20 | A1 | 2-D | Fraction of grid box that has 20-30% sea ice coverage | 1 |

SEAICE30 | A1 | 2-D | Fraction of grid box that has 30-40% sea ice coverage | 1 |

SEAICE40 | A1 | 2-D | Fraction of grid box that has 40-50% sea ice coverage | 1 |

SEAICE50 | A1 | 2-D | Fraction of grid box that has 50-60% sea ice coverage | 1 |

SEAICE60 | A1 | 2-D | Fraction of grid box that has 60-70% sea ice coverage | 1 |

SEAICE70 | A1 | 2-D | Fraction of grid box that has 70-80% sea ice coverage | 1 |

SEAICE80 | A1 | 2-D | Fraction of grid box that has 80-90% sea ice coverage | 1 |

SEAICE90 | A1 | 2-D | Fraction of grid box that has > 90% sea ice coverage | 1 |

SLP | A1 | 2-D | Sea level pressure | hPa |

SNODP | A1 | 2-D | Snow depth | m |

SNOMAS | A1 | 2-D | Snow mass | kg m^{-2} |

SWGDN | A1 | 2-D | Surface incident shortwave flux | W m^{-2} |

SWGNT | A1 | 2-D | Net surface downward shortwave flux | W m^{-2} |

TO3 | A1 | 2-D | Total column ozone | Dobsons |

TROPPT | A1 | 2-D | T based tropopause pressure | hPa |

TS | A1 | 2-D | Surface skin temperature | K |

T2M | A1 | 2-D | Temperature 2 m above displacement height | K |

U10M | A1 | 2-D | Eastward wind 10 m above displacement height | m s^{-1} |

USTAR | A1 | 2-D | Friction velocity | m s^{-1} |

V10M | A1 | 2-D | Northward wind 10 m above displacement height | m s^{-1} |

Z0M | A1 | 2-D | Roughness length, momentum | m |

CLOUD | A3cld | 3-D | Total cloud fraction in grid box | 1 |

QI | A3cld | 3-D | Cloud ice mixing ratio | kg kg^{-1} |

QIAN | A3cld | 3-D | Cloud ice mixing ratio – anvils | kg kg^{-1} |

QILS | A3cld | 3-D | Cloud ice mixing ratio – large-scale | kg kg^{-1} |

QL | A3cld | 3-D | Cloud liquid water mixing ratio | kg kg^{-1} |

QLAN | A3cld | 3-D | Cloud liquid water mixing ratio – anvil | kg kg^{-1} |

QLLS | A3cld | 3-D | Cloud liquid water mixing ratio – large-scale | kg kg^{-1} |

TAUCLI | A3cld | 3-D | In-cloud ice cloud optical thickness (visible band) | 1 |

TAUCLW | A3cld | 3-D | In-cloud liquid cloud optical thickness (visible band) | 1 |

OPTDEPTH | A3cld | 3-D | Total in-cloud optical depth (visible band) | 1 |

DTRAIN | A3dyn | 3-D | Detrainment cloud mass flux | kg m^{-2} s^{-2} |

OMEGA | A3dyn | 3-D | Vertical pressure velocity | Pa s^{-1} |

RH | A3dyn | 3-D | Relative humidity | 1 |

U | A3dyn | 3-D | Eastward component of wind | m s^{-1} |

V | A3dyn | 3-D | Northward component of wind | m s^{-1} |

DQRCU | A3mstC | 3-D | Precipitation production rate – convective | kg kg^{-1} s^{-1} |

DQRLSAN | A3mstC | 3-D | Precipitation production rate – large-scale + anvil | kg kg^{-1} s^{-1} |

REEVAPCN | A3mstC | 3-D | Evaporation of precipitating convective condensate | kg kg^{-1} s^{-1} |

REEVAPLS(AN) | A3mstC | 3-D | Evaporation of precipitating LS + anvil condensate | kg kg^{-1} s^{-1} |

CMFMC | A3mstE | 3-D | Upward moist convective mass flux | kg m^{-2} s^{-2} |

PFICU | A3mstE | 3-D | Downward flux of ice precipitation – convective | kg m^{-2} s^{-1} |

PFILSAN | A3mstE | 3-D | Downward flux of ice precip – large-scale + anvil | kg m^{-2} s^{-1} |

PFLCU | A3mstE | 3-D | Downward flux of liquid precipitation – convective | kg m^{-2} s^{-1} |

PFLLSAN | A3mstE | 3-D | Downward flux of liquid precip – large-scale + anvil | kg m^{-2} s^{-1} |

PS | I3 | 2-D | Surface pressure | Pa |

PV | I3 | 3-D | Ertel potential vorticity | K m^{2} kg^{-1} s^{-1} |

QV | I3 | 3-D | Specific humidity | kg kg^{-1} |

T | I3 | 3-D | Air temperature | K |

A4.5 MERRA fields used by GEOS–Chem

Notes about MERRA met fields:

- A1 fields are 1-hr time-averaged fields with timestamps (i.e. center of averaging period): 00:30, 01:30, 02:30 ... 23:30 GMT
- A3 fields are 3-hr time-averaged fields with timestamps (i.e. center of averaging period): 01:30, 04:30, 07:30, 10:30, 13:30, 16:30, 19:30, 22:30 GMT
- I6 fields 6-hr instantaneous fields with timestamps: 00:00, 06:00, 12:00, 18:00 GMT.
- Constant fields are time-invariant.
- For more information about the MERRA raw data, please see the MERRA post on the GEOS–Chem wiki.
- For detailed information about how the individual MERRA fields were regridded, see the List of MERRA met fields post on the GEOS–Chem wiki.
- For more information about the native MERRA grids, see the MERRA grid structure post on the GEOS–Chem wiki.

Field | Type | Dimension | Units | Quantity |
---|---|---|---|---|

FRLAKE | Constant | 2-D | Fraction of lake type in grid box | 1 |

FRLAND | Constant | 2-D | Fraction of land type in grid box | 1 |

FRLANDIC | Constant | 2-D | Fraction of land ice type in grid box | 1 |

FROCEAN | Constant | 2-D | Fraction of ocean in grid box | 1 |

PHIS | Constant | 2-D | Surface geopotential | m^{2} s^{-2} |

ALBEDO | A1 | 2-D | Surface albedo | 1 |

CLDTOT | A1 | 2-D | Total cloud fraction | 1 |

EFLUX | A1 | 2-D | Latent heat flux (positive upward) | W m^{-2} |

EVAP | A1 | 2-D | Surface evaporation | kg m^{-2} s^{-2} |

FRSEAICE | A1 | 2-D | Fraction of sea ice | 1 |

FRSNO | A1 | 2-D | Fractional snow-covered area | 1 |

GRN | A1 | 2-D | Vegetation greenness fraction | 1 |

GWETROOT | A1 | 2-D | Root zone soil wetness | 1 |

GWETTOP | A1 | 2-D | Top soil wetness | 1 |

HFLUX | A1 | 2-D | Sensible heat flux (positive upward) | W m^{-2} |

LAI | A1 | 2-D | Leaf area index | m^{2} m^{-2} |

LWGNT | A1 | 2-D | Surface net downward longwave flux | W m^{-2} |

LWI | A1 | 2-D | Land/water/ice flags | 1 |

LWTUP | A1 | 2-D | Upward longwave flux at top of atmosphere (TOA) | W m^{-2} |

PARDF | A1 | 2-D | Surface downward PAR diffuse flux | W m^{-2} |

PARDR | A1 | 2-D | Surface downward PAR beam flux | W m^{-2} |

PBLH | A1 | 2-D | Planetary boundary layer height above surface | m |

PRECANV | A1 | 2-D | Surface precipitation flux from anvils | kg m^{-2} s^{-2} |

PRECCON | A1 | 2-D | Surface precipitation flux from convection | kg m^{-2} s^{-2} |

PRECLSC | A1 | 2-D | Surface precipitation flux from large-scale | kg m^{-2} s^{-2} |

PRECSNO | A1 | 2-D | Surface snowfall flux | kg m^{-2} s^{-2} |

PRECTOT | A1 | 2-D | Total surface precipitation flux | kg m^{-2} s^{-2} |

QV2M | A1 | 2-D | Specific humidity at 2 m above the displacement height | kg kg^{-1} |

SEAICE00 | A1 | 2-D | Fraction of grid box that has < 10% sea ice coverage | 1 |

SEAICE10 | A1 | 2-D | Fraction of grid box that has 10-20% sea ice coverage | 1 |

SEAICE20 | A1 | 2-D | Fraction of grid box that has 20-30% sea ice coverage | 1 |

SEAICE30 | A1 | 2-D | Fraction of grid box that has 30-40% sea ice coverage | 1 |

SEAICE40 | A1 | 2-D | Fraction of grid box that has 40-50% sea ice coverage | 1 |

SEAICE50 | A1 | 2-D | Fraction of grid box that has 50-60% sea ice coverage | 1 |

SEAICE60 | A1 | 2-D | Fraction of grid box that has 60-70% sea ice coverage | 1 |

SEAICE70 | A1 | 2-D | Fraction of grid box that has 70-80% sea ice coverage | 1 |

SEAICE80 | A1 | 2-D | Fraction of grid box that has 80-90% sea ice coverage | 1 |

SEAICE90 | A1 | 2-D | Fraction of grid box that has > 90% sea ice coverage | 1 |

SLP | A1 | 2-D | Sea level pressure | hPa |

SNODP | A1 | 2-D | Snow depth | m |

SNOMAS | A1 | 2-D | Snow mass | kg m^{-2} |

SWGDN | A1 | 2-D | Surface incident shortwave flux | W m^{-2} |

SWGNT | A1 | 2-D | Net surface downward shortwave flux | W m^{-2} |

TROPPT | A1 | 2-D | T based tropopause pressure | hPa |

TS | A1 | 2-D | Surface skin temperature | K |

T2M | A1 | 2-D | Temperature 2 m above displacement height | K |

U10M | A1 | 2-D | Eastward wind 10 m above displacement height | m s^{-1} |

USTAR | A1 | 2-D | Friction velocity | m s^{-1} |

V10M | A1 | 2-D | Northward wind 10 m above displacement height | m s^{-1} |

Z0M | A1 | 2-D | Roughness length, momentum | m |

CLOUD | A3 | 3-D | Total cloud fraction in grid box | 1 |

CMFMC | A3 | 3-D | Upward moist convective mass flux | kg m^{-2} s^{-2} |

DQRCU | A3 | 3-D | Precipitation production rate – convective | kg kg^{-1} s^{-1} |

DQRLSAN | A3 | 3-D | Precipitation production rate – large-scale + anvil | kg kg^{-1} s^{-1} |

DQIDTMST | A3 | 3-D | Ice tendency from moist physics | kg kg^{-1} s^{-1} |

DQLDTMST | A3 | 3-D | Liquid water tendency from moist physics | kg kg^{-1} s^{-1} |

DQVDTMST | A3 | 3-D | Water vapor tendency from moist physics | kg kg^{-1} s^{-1} |

DTRAIN | A3 | 3-D | Detrainment cloud mass flux | kg m^{-2} s^{-2} |

MOISTQ | A3 | 3-D | Overall tendency of QV | g kg^{-1} day^{-1} |

OPTDEPTH | A3 | 3-D | Total in-cloud optical depth (visible band) | 1 |

PFICU | A3 | 3-D | Downward flux of ice precipitation – convective | kg m^{-2} s^{-1} |

PFILSAN | A3 | 3-D | Downward flux of ice precip – large-scale + anvil | kg m^{-2} s^{-1} |

PFLCU | A3 | 3-D | Downward flux of liquid precipitation – convective | kg m^{-2} s^{-1} |

PFLLSAN | A3 | 3-D | Downward flux of liquid precip – large-scale + anvil | kg m^{-2} s^{-1} |

QI | A3 | 3-D | Cloud ice mixing ratio | kg kg^{-1} |

QL | A3 | 3-D | Cloud liquid water mixing ratio | kg kg^{-1} |

QV | A3 | 3-D | Specific humidity | kg kg^{-1} |

REEVAPCN | A3 | 3-D | Evaporation of precipitating convective condensate | kg kg^{-1} s^{-1} |

REEVAPLS | A3 | 3-D | Evaporation of precipitating large-scale + anvil condensate | kg kg^{-1} s^{-1} |

T | A3 | 3-D | Air temperature | K |

TAUCLI | A3 | 3-D | In-cloud ice cloud optical thickness (visible band) | 1 |

TAUCLW | A3 | 3-D | In-cloud liquid cloud optical thickness (visible band) | 1 |

U | A3 | 3-D | Eastward component of wind | m s^{-1} |

V | A3 | 3-D | Northward component of wind | m s^{-1} |

OMEGA | I6 | 3-D | Vertical pressure velocity | Pa s^{-1} |

PS | I6 | 2-D | Surface pressure | hPa |

PV | I6 | 3-D | Ertel potential vorticity | K m^{2} kg^{-1} s^{-1} |

RH | I6 | 3-D | Relative humidity | 1 |