Click on column title next to arrow to sort alphabetically. Directory name is for 8x daily values after 1980. Follow table name structure for different time scale and statistics. For files before 1981, use
| Variable description | Level | NetCDF Variable | Main Directory | Valid Min | Valid Max | Units |
|---|
| Liquid Volumetric Soil Moisture (non-frozen) Fraction | Multiple Subsurface Levels | soill | /Datasets/20thC_ReanV3/subsfcMO | 0.000 | 1.000 | frac. |
| soil moisture content | Between 0-200 cm BGL | soilm | /Datasets/20thC_ReanV3/subsfcMO | 0.000 | 6553.000 | kg/m^2 |
| Volumetric Soil Moisture | Multiple Subsurface Levels | soilw | /Datasets/20thC_ReanV3/subsfcMO | 0.000 | 1.000 | frac. |
| Soil Temperature | Multiple Subsurface Levels | tsoil | /Datasets/20thC_ReanV3/subsfcMO | 100.000 | 500.000 | Kelvins |
| Air temperature | Fixed Levels Above the Surface | air | /Datasets/20thC_ReanV3/hgt_above_sfcMO | 100.000 | 500.000 | degK |
| Relative Humidity | Fixed Levels Above the Surface | rhum | /Datasets/20thC_ReanV3/hgt_above_sfcMO | 0.000 | 100.000 | % |
| u-wind | Fixed Levels Above the Surface | uwnd | /Datasets/20thC_ReanV3/hgt_above_sfcMO | -280.000 | 350.000 | m/s |
| v-wind | Fixed Levels Above the Surface | vwnd | /Datasets/20thC_ReanV3/hgt_above_sfcMO | -280.000 | 350.000 | m/s |
| Air temperature | Pressure Levels | air | /Datasets/20thC_ReanV3/prsMO | 100.000 | 500.000 | degK |
| Geopotential height | Pressure Levels | hgt | /Datasets/20thC_ReanV3/prsMO | -1500.000 | 60000.000 | m |
| Omega (dp/dt) | Pressure Levels | omega | /Datasets/20thC_ReanV3/prsMO | -15.000 | 15.000 | Pascal/s |
| Relative Humidity | Pressure Levels | rhum | /Datasets/20thC_ReanV3/prsMO | 0.000 | 100.000 | % |
| Specific Humidity | Pressure Levels | shum | /Datasets/20thC_ReanV3/prsMO | -0.000 | 0.065 | kg/kg |
| u-wind | Pressure Levels | uwnd | /Datasets/20thC_ReanV3/prsMO | -280.000 | 350.000 | m/s |
| v-wind | Pressure Levels | vwnd | /Datasets/20thC_ReanV3/prsMO | -280.000 | 350.000 | m/s |
| aerodynamic conductance | Surface | acond | /Datasets/20thC_ReanV3/sfc_paramsMO | 0.000 | 1.000 | m/s |
| convective precipitation accumulation | Surface | acpcp | /Datasets/20thC_ReanV3/accumsMO | 0.000 | 100.000 | kg/m^2 |
| Air temperature | 2 m | air | /Datasets/20thC_ReanV3/2mMO | 100.000 | 500.000 | degK |
| Air Temperature | Hybrid level 1 | air | /Datasets/20thC_ReanV3/HL1MO | 100.000 | 500.000 | degK |
| Air temperature | sigma level 0.995 | air | /Datasets/20thC_ReanV3/sig995MO | 100.000 | 500.000 | degK |
| Air temperature | Tropopause | air | /Datasets/20thC_ReanV3/tropoMO | 100.000 | 500.000 | degK |
| Albedo | Surface | albedo | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 100.000 | % |
| Precipitation amount | Surface | apcp | /Datasets/20thC_ReanV3/accumsMO | 0.000 | 100.000 | kg/m^2 |
| convective available potential energy | Surface | cape | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 8000.000 | J/kg |
| Clear Sky UV-B Downward Solar Flux | Surface | cduvb | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 30.000 | W m-2 |
| categorical freezing rain | Surface | cfrzr | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 1.000 | 1 |
| categorical ice pellets | Surface | cicep | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 1.000 | 1 |
| Cloud Water Content | Entire Atmosphere Considered As a Single Layer | cldwtr | /Datasets/20thC_ReanV3/miscMO | 0.000 | 20.000 | kg/m^2 |
| Percent of Frozen Precipitation | Surface | cpofp | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 100.000 | % |
| Convective Precipitation Rate | Surface | cprat | /Datasets/20thC_ReanV3/sfcMO | -0.000 | 0.006 | kg/m^2/s |
| categorical rain | Surface | crain | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 1.000 | 1 |
| Clear Sky Downward Longwave Flux | Surface | csdlf | /Datasets/20thC_ReanV3/clrSkyFlxMO | -100.000 | 600.000 | W/m^2 |
| Clear Sky Downward Solar Flux | Surface | csdsf | /Datasets/20thC_ReanV3/clrSkyFlxMO | -120.000 | 1300.000 | W/m^2 |
| Clear Sky Upward Longwave Flux | Nominal top of atmosphere | csulf | /Datasets/20thC_ReanV3/ntatFlxMO | -100.000 | 1000.000 | W/m^2 |
| Clear Sky Upward Longwave Flux | Surface | csulf | /Datasets/20thC_ReanV3/clrSkyFlxMO | -100.000 | 1000.000 | W/m^2 |
| Clear Sky Upward Solar Flux | Nominal top of atmosphere | csusf | /Datasets/20thC_ReanV3/ntatFlxMO | -100.000 | 1600.000 | W/m^2 |
| Clear Sky Upward Solar Flux | Surface | csusf | /Datasets/20thC_ReanV3/clrSkyFlxMO | -100.000 | 850.000 | W/m^2 |
| Downward Longwave Radiation Flux | Surface | dlwrf | /Datasets/20thC_ReanV3/sfcFlxMO | -200.000 | 800.000 | W/m^2 |
| Downward Shortwave Radiation Flux | Nominal top of atmosphere | dswrf | /Datasets/20thC_ReanV3/ntatFlxMO | 0.000 | 6553.000 | W/m^2 |
| Downward Solar Radiation Flux | Surface | dswrf | /Datasets/20thC_ReanV3/sfcFlxMO | -200.000 | 1670.000 | W/m^2 |
| UV-B Downward Solar Flux | Surface | duvb | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 30.000 | W m-2 |
| Direct Evaporation From Bare Soil | Surface | evbs | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 700.000 | W m-2 |
| Canopy Water Evaporation | Surface | evcw | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 1000.000 | W m-2 |
| Field Capacity | Surface | fldcp | /Datasets/20thC_ReanV3/sfc_paramsMO | 0.000 | 1.000 | 1 |
| frictional velocity | Surface | fricv | /Datasets/20thC_ReanV3/sfc_paramsMO | 0.000 | 5.000 | m/s |
| Geopotential height | 0C Isothermal Layer | hgt | /Datasets/20thC_ReanV3/0CisothermMO | -1500.000 | 60000.000 | m |
| Geopotential height | Hybrid level 1 | hgt | /Datasets/20thC_ReanV3/HL1MO | -1500.000 | 100000.000 | m |
| Geopotential height | Tropopause | hgt | /Datasets/20thC_ReanV3/tropoMO | -1500.000 | 60000.000 | m |
| Planetary Boundary Layer Height | Surface | hpbl | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 65530.000 | m |
| Ice Concentration | Surface | icec | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 1.000 | frac. |
| ice thickness | Surface | icet | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 6.500 | m |
| Latent Heat Net Flux | Surface | lhtfl | /Datasets/20thC_ReanV3/sfcFlxMO | -3000.000 | 3000.000 | W/m^2 |
| Near IR Beam Downward Solar Flux | Surface | nbdsf | /Datasets/20thC_ReanV3/sfcFlxMO | -150.000 | 700.000 | W/m^2 |
| Near IR Diffuse Downward Solar Flux | Surface | nddsf | /Datasets/20thC_ReanV3/sfcFlxMO | -120.000 | 700.000 | W/m^2 |
| Omega (dp/dt) | sigma level 0.995 | omega | /Datasets/20thC_ReanV3/sig995MO | -15.000 | 15.000 | Pascal/s |
| Potential Evaporation Rate | Surface | pevpr | /Datasets/20thC_ReanV3/sfcMO | -400.000 | 6000.000 | W/m^2 |
| Potential Temperature | sigma level 0.995 | pottmp | /Datasets/20thC_ReanV3/sig995MO | 100.000 | 650.000 | degK |
| Precipitable Water Content | Entire Atmosphere Considered As a Single Layer | pr_wtr | /Datasets/20thC_ReanV3/miscMO | -50.000 | 150.000 | kg/m^2 |
| Precipitation Rate | Surface | prate | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 0.007 | kg/m^2/s |
| Cloud Layer Pressure | High cloud bottom | pres | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 120000.000 | Pascals |
| Cloud Layer Pressure | High cloud top | pres | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 120000.000 | Pascals |
| Cloud Layer Pressure | Low cloud bottom | pres | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 120000.000 | Pascals |
| Cloud Layer Pressure | Low cloud top | pres | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 120000.000 | Pascals |
| Cloud Layer Pressure | Middle cloud bottom | pres | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 120000.000 | Pascals |
| Cloud Layer Pressure | Middle cloud top | pres | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 120000.000 | Pascals |
| Pressure | Surface | pres | /Datasets/20thC_ReanV3/sfcMO | 46500.000 | 112000.000 | Pa |
| Pressure | Tropopause | pres | /Datasets/20thC_ReanV3/tropoMO | 0.000 | 65500.000 | Pa |
| Mean Sea Level Pressure | Mean Sea Level | prmsl | /Datasets/20thC_ReanV3/miscMO | 77000.000 | 125000.000 | Pa |
| Maximum Specific Humidity | 2 m | qmax | /Datasets/20thC_ReanV3/2mMO | -0.010 | 0.056 | kg/kg |
| Minimum Specific Humidity | 2 m | qmin | /Datasets/20thC_ReanV3/2mMO | -0.010 | 0.056 | kg/kg |
| Relative Humidity | 0C Isothermal Layer | rhum | /Datasets/20thC_ReanV3/0CisothermMO | 0.000 | 100.000 | % |
| Relative Humidity | 2 m | rhum | /Datasets/20thC_ReanV3/2mMO | 0.000 | 100.000 | % |
| Relative Humidity | Entire Atmosphere Considered As a Single Layer | rhum | /Datasets/20thC_ReanV3/miscMO | 0.000 | 100.000 | % |
| Relative Humidity | sigma level 0.995 | rhum | /Datasets/20thC_ReanV3/sig995MO | 0.000 | 100.000 | % |
| Water Runoff | Surface | runoff | /Datasets/20thC_ReanV3/accumsMO | 0.000 | 65.530 | kg/m^2 |
| Sublimation (Evaporation From Snow) | Surface | sbsno | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 500.000 | W m-2 |
| Surface Roughness | Surface | sfcr | /Datasets/20thC_ReanV3/sfc_paramsMO | -0.007 | 5.000 | m |
| Exchange Coefficient | Surface | sfexc | /Datasets/20thC_ReanV3/sfc_paramsMO | -1.000 | 1.000 | (kg m-3) (m s-1) |
| Sensible Heat Net Flux | Surface | shtfl | /Datasets/20thC_ReanV3/sfcFlxMO | -2000.000 | 4500.000 | W/m^2 |
| Specific Humidity | 2 m | shum | /Datasets/20thC_ReanV3/2mMO | -0.010 | 0.056 | kg/kg |
| Specific Humidity | Hybrid level 1 | shum | /Datasets/20thC_ReanV3/HL1MO | -0.010 | 0.056 | kg/kg |
| Skin Temperature | Surface | skt | /Datasets/20thC_ReanV3/sfcMO | 100.000 | 500.000 | degK |
| snow depth | Surface | snod | /Datasets/20thC_ReanV3/accumsMO | 0.000 | 65.500 | m |
| Snow Phase Change Heat Flux | Surface | snohf | /Datasets/20thC_ReanV3/miscFlxMO | -175.000 | 700.000 | W/m^2 |
| snow cover | Surface | snowc | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 100.000 | % |
| storm surface runoff | Surface | ssrunoff | /Datasets/20thC_ReanV3/sfcMO | 0.000 | 65.500 | kg/m^2 |
| Total cloud cover | Boundary Layer | tcdc | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 100.000 | % |
| Total cloud cover | Convective Cloud Layer | tcdc | /Datasets/20thC_ReanV3/miscMO | 0.000 | 100.000 | % |
| Total cloud cover | Entire Atmosphere Considered As a Single Layer | tcdc | /Datasets/20thC_ReanV3/miscMO | 0.000 | 100.000 | % |
| Total cloud cover | Low Cloud Layer | tcdc | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 100.000 | % |
| Total cloud cover | Middle Cloud Layer | tcdc | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 100.000 | % |
| Total cloud cover | Top Cloud Layer | tcdc | /Datasets/20thC_ReanV3/cldLyrMO | 0.000 | 100.000 | % |
| total columnar ozone | Entire Atmosphere Considered As a Single Layer | tco3 | /Datasets/20thC_ReanV3/miscMO | 0.000 | 750.000 | Dobsons |
| Maximum Temperature | 2 m | tmax | /Datasets/20thC_ReanV3/2mMO | 100.000 | 500.000 | degK |
| Minimum Temperature | 2 m | tmin | /Datasets/20thC_ReanV3/2mMO | 100.000 | 500.000 | degK |
| Air temperature at cloud layer top | High cloud top | tmp | /Datasets/20thC_ReanV3/cldLyrMO | 150.000 | 350.000 | K |
| Air temperature at cloud layer top | Low cloud top | tmp | /Datasets/20thC_ReanV3/cldLyrMO | 150.000 | 350.000 | K |
| Air temperature at cloud layer top | Middle cloud top | tmp | /Datasets/20thC_ReanV3/cldLyrMO | 150.000 | 350.000 | K |
| transpiration | Surface | trans | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 655.300 | W/m^2 |
| Momentum Flux, u-component | Surface | uflx | /Datasets/20thC_ReanV3/miscFlxMO | -30.000 | 30.000 | N/m^2 |
| Zonal Gravity Wave Stress | Surface | ugwd | /Datasets/20thC_ReanV3/sfcMO | -32.000 | 32.000 | N/m^2 |
| Upward Longwave Radiation Flux | Nominal top of atmosphere | ulwrf | /Datasets/20thC_ReanV3/ntatFlxMO | 0.000 | 6553.000 | W/m^2 |
| Upward Longwave Radiation Flux | Surface | ulwrf | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 6553.000 | W/m^2 |
| Upward Shortwave Radiation Flux | Nominal top of atmosphere | uswrf | /Datasets/20thC_ReanV3/ntatFlxMO | 0.000 | 6553.000 | W/m^2 |
| Upward Shortwave Radiation Flux | Surface | uswrf | /Datasets/20thC_ReanV3/sfcFlxMO | 0.000 | 6553.000 | W/m^2 |
| u-wind | 10 m | uwnd | /Datasets/20thC_ReanV3/10mMO | -300.000 | 300.000 | m/s |
| U-wind | Hybrid level 1 | uwnd | /Datasets/20thC_ReanV3/HL1MO | -300.000 | 300.000 | m/s |
| u-wind | sigma level 0.995 | uwnd | /Datasets/20thC_ReanV3/sig995MO | -280.000 | 350.000 | m/s |
| u-wind | Tropopause | uwnd | /Datasets/20thC_ReanV3/tropoMO | -280.000 | 350.000 | m/s |
| Visible Beam Downward Solar Flux | Surface | vbdsf | /Datasets/20thC_ReanV3/sfcFlxMO | -150.000 | 700.000 | W/m^2 |
| Visible Diffuse Downward Solar Flux | Surface | vddsf | /Datasets/20thC_ReanV3/sfcFlxMO | -100.000 | 700.000 | W/m^2 |
| vegetation percent | Surface | veg | /Datasets/20thC_ReanV3/sfc_paramsMO | 0.000 | 100.000 | % |
| Momentum Flux, v-component | Surface | vflx | /Datasets/20thC_ReanV3/miscFlxMO | -30.000 | 30.000 | N/m^2 |
| Meridional Gravity Wave Stress | Surface | vgwd | /Datasets/20thC_ReanV3/sfcMO | -32.000 | 32.000 | N/m^2 |
| v-wind | 10 m | vwnd | /Datasets/20thC_ReanV3/10mMO | -300.000 | 300.000 | m/s |
| V-wind | Hybrid level 1 | vwnd | /Datasets/20thC_ReanV3/HL1MO | -300.000 | 300.000 | m/s |
| v-wind | sigma level 0.995 | vwnd | /Datasets/20thC_ReanV3/sig995MO | -280.000 | 350.000 | m/s |
| v-wind | Tropopause | vwnd | /Datasets/20thC_ReanV3/tropoMO | -280.000 | 350.000 | m/s |
| Vertical Wind Shear | Tropopause | vwsh | /Datasets/20thC_ReanV3/tropoMO | -0.045 | 0.045 | 1/s |
| Water Equiv. of Accum. Snow Depth | Surface | weasd | /Datasets/20thC_ReanV3/accumsMO | 0.000 | 65530.000 | kg/m^2 |
| Wilting Point | Surface | wilt | /Datasets/20thC_ReanV3/sfc_paramsMO | 0.000 | 1.000 | 1 |