Some PSD datasets and products are not up-to-date due to a system problem. We are working on a fix.
 

NCEP North American Regional Reanalysis: NARR

Go To: Temporal Coverage | Spatial Coverage | Levels | Update Schedule | Download/Plot Data | Restrictions | Details | Caveats | File Naming | Citation | References | Original Source | Contact

Main Page | Pressure | Monolevel| Subsurface

The data were updated to add data for June 2009. Four variables were redone because of precision issues: daily and monthly cfrzr, cicep, crain, and csnow.

See the PSD NARR webpage for more information on PSD's involvement in the NARR project

Brief Description:

  • Very High Resolution Reanalysis of the North American region including assimilated precipitation.

Temporal Coverage:

  • 8-times, Daily and Monthly means for 1979/01/01 to Jun 30, 2014 .
  • Long Term Daily, Monthly means for years 1979 - 2000.

Spatial Coverage:

  • The native model grid is converted to a Northern Lambert Conformal Conic grid which is what we archive. Corners of this grid are 12.2N; 133.5W, 54.5N; 152.9W, 57.3N; 49.4W, 14.3N; 65.1W (essentially, North America). The grid resolution is 349x277 which is approximately 0.3 degrees (32km) resolution at the lowest latitude. A page describing the coverage along with information on reading the projection is available.

Levels:

  • Surface and other

Update Schedule:

  • As NCEP produces data in realtime, we will update our files.

Download/Plot Data: Monolevel Data

Variable Statistic Level Download File Create Plot/Subset
Accumulated convective precipitation 3-hourly Accumulation Surface acpcp.yyyy.nc N/A
Accumulated convective precipitation Daily Accumulation Surface acpcp.yyyy.nc N/A
Accumulated convective precipitation Monthly Mean of Daily Accumulation Surface acpcp.mon.mean.nc N/A
Accumulated convective precipitation Longterm Monthly Mean of Daily Accumulation Surface acpcp.mon.ltm.nc N/A
Air Temperature at 2 m 3-hourly value 2m air.2m.yyyy.nc N/A
Air Temperature at 2 m Daily Mean 2m air.2m.yyyy.nc N/A
Air Temperature at 2 m Monthly Mean 2m air.2m.mon.mean.nc N/A
Air Temperature at 2 m Longterm Monthly Mean 2m air.2m.mon.ltm.nc N/A
Air temperature 3-hourly value Surface* air.sfc.yyyy.nc N/A
Air temperature Daily Mean Surface* air.sfc.yyyy.nc N/A
Air temperature Monthly Mean Surface* air.sfc.mon.mean.nc N/A
Air temperature Longterm Monthly Mean Surface* air.sfc.mon.ltm.nc N/A
Albedo 3-hourly value Surface albedo.yyyy.nc N/A
Albedo Daily Mean Surface albedo.yyyy.nc N/A
Albedo Monthly Mean Surface albedo.mon.mean.nc N/A
Albedo Longterm Monthly Mean Surface albedo.mon.ltm.nc N/A
Accumulated total precipitation 3-hourly Accumulation Surface apcp.yyyy.nc N/A
Accumulated total precipitation Daily Accumulation Surface apcp.yyyy.nc N/A
Accumulated total precipitation Monthly average of Daily Accumulation Surface apcp.mon.mean.nc N/A
Accumulated total precipitation Longterm Monthly Mean of daily totals Surface apcp.mon.ltm.nc N/A
Subsurface Runoff (baseflow) 3-hourly Accumulation Surface bgrun.yyyy.nc N/A
Subsurface Runoff (baseflow) Daily Accumulation Surface bgrun.yyyy.nc N/A
Subsurface Runoff (baseflow) Monthly Mean of Daily Accumulations Surface bgrun.mon.mean.nc N/A
Subsurface Runoff (baseflow) Longterm Monthly Mean Surface bgrun.mon.ltm.nc N/A
Blackadar's Mixing Length Scale 3-hourly value Surface bmixl.hl1.yyyy.nc N/A
Blackadar's Mixing Length Scale Daily Mean Surface bmixl.hl1.yyyy.nc N/A
Blackadar's Mixing Length Scale Monthly Mean Surface bmixl.sfc.mon.mean.nc N/A
Blackadar's Mixing Length Scale Longterm Monthly Mean Surface bmixl.sfc.mon.ltm.nc N/A
Convective Available Potential Energy 3-hourly value Surface cape.yyyy.nc N/A
Convective Available Potential Energy Daily Mean Surface cape.yyyy.nc N/A
Convective Available Potential Energy Monthly Mean Surface cape.mon.mean.nc N/A
Convective Available Potential Energy Longterm Monthly Mean Surface cape.mon.ltm.nc N/A
Canopy Conductance 3-hourly value Surface ccond.yyyy.nc N/A
Canopy Conductance Daily Mean Surface ccond.yyyy.nc N/A
Canopy Conductance Monthly Mean Surface ccond.mon.mean.nc N/A
Canopy Conductance Longterm Monthly Mean Surface ccond.mon.ltm.nc N/A
Mean of Convective Cloud Cover 3-hourly Average Entire Atmosphere cdcon.yyyy.nc N/A
Mean of Convective Cloud Cover Daily Mean Entire Atmosphere cdcon.yyyy.nc N/A
Mean of Convective Cloud Cover Monthly Mean Entire Atmosphere cdcon.mon.mean.nc N/A
Mean of Convective Cloud Cover Longterm Monthly Mean Entire Atmosphere cdcon.mon.ltm.nc N/A
Mean of Non-Convective Cloud Cover 3-hourly Average Entire Atmosphere cdlyr.yyyy.nc N/A
Mean of Non-Convective Cloud Cover Daily Mean Entire Atmosphere cdlyr.yyyy.nc N/A
Mean of Non-Convective Cloud Cover Monthly Mean Entire Atmosphere cdlyr.mon.mean.nc N/A
Mean of Non-Convective Cloud Cover Longterm Monthly Mean Entire Atmosphere cdlyr.mon.ltm.nc N/A
Categorical Freezing Rain 3-hourly forecast Surface cfrzr.yyyy.nc N/A
Categorical Freezing Rain Daily Mean Surface cfrzr.yyyy.nc N/A
Categorical Freezing Rain Monthly Mean Surface cfrzr.mon.mean.nc N/A
Categorical Freezing Rain Longterm Monthly Mean Surface cfrzr.mon.ltm.nc N/A
Categorical Ice Pellets 3-hourly forecast Surface cicep.yyyy.nc N/A
Categorical Ice Pellets Daily Mean Surface cicep.yyyy.nc N/A
Categorical Ice Pellets Monthly Mean Surface cicep.mon.mean.nc N/A
Categorical Ice Pellets Longterm Monthly Mean Surface cicep.mon.ltm.nc N/A
Convective Inhibition 3-hourly value Surface cin.yyyy.nc N/A
Convective Inhibition Daily Mean Surface cin.yyyy.nc N/A
Convective Inhibition Monthly Mean Surface cin.mon.mean.nc N/A
Convective Inhibition Longterm Monthly Mean Surface cin.mon.ltm.nc N/A
Plant Canopy Water 3-hourly value Surface cnwat.yyyy.nc N/A
Plant Canopy Water Daily Mean Surface cnwat.yyyy.nc N/A
Plant Canopy Water Monthly Mean Surface cnwat.mon.mean.nc N/A
Plant Canopy Water Longterm Monthly Mean Surface cnwat.mon.ltm.nc N/A
Categorical Rain 3-hourly forecast Surface crain.yyyy.nc N/A
Categorical Rain Daily Mean Surface crain.yyyy.nc N/A
Categorical Rain Monthly Mean Surface crain.mon.mean.nc N/A
Categorical Rain Longterm Monthly Mean Surface crain.mon.ltm.nc N/A
Categorical Snow 3-hourly forecast Surface csnow.yyyy.nc N/A
Categorical Snow Daily Mean Surface csnow.yyyy.nc N/A
Categorical Snow Monthly Mean Surface csnow.mon.mean.nc N/A
Categorical Snow Longterm Monthly Mean Surface csnow.mon.ltm.nc N/A
Downward Longwave Radiation Flux 3-hourly forecast Surface dlwrf.yyyy.nc N/A
Downward Longwave Radiation Flux Daily Mean Surface dlwrf.yyyy.nc N/A
Downward Longwave Radiation Flux Monthly Mean Surface dlwrf.mon.mean.nc N/A
Downward Longwave Radiation Flux Longterm Monthly Mean Surface dlwrf.mon.ltm.nc N/A
Dew Point Temperature at 2m 3-hourly value 2m dpt.2m.yyyy.nc N/A
Dew Point Temperature at 2m Daily Mean 2m dpt.2m.yyyy.nc N/A
Dew Point Temperature at 2m Monthly Mean 2m dpt.2m.mon.mean.nc" N/A
Dew Point Temperature at 2m Longterm Monthly Mean 2m dpt.2m.mon.mltmnc" N/A
Downward Shortwave Radiation Flux 3-hourly average Surface dswrf.yyyy.nc N/A
Downward Shortwave Radiation Flux Daily Mean Surface dswrf.yyyy.nc N/A
Downward Shortwave Radiation Flux Monthly Mean Surface dswrf.mon.mean.nc N/A
Downward Shortwave Radiation Flux Longterm Monthly Mean Surface dswrf.mon.ltm.nc N/A
Accumulated total evaporation 3-hourly Accumulation Surface evap.yyyy.nc N/A
Accumulated total evaporation Daily Mean Surface evap.yyyy.nc N/A
Accumulated total evaporation Monthly Mean Surface evap.mon.mean.nc N/A
Accumulated total evaporation Longterm Monthly Mean Surface evap.mon.ltm.nc N/A
Ground Heat Flux 3-hourly forecast Surface gflux.yyyy.nc N/A
Ground Heat Flux Daily Mean Surface gflux.yyyy.nc N/A
Ground Heat Flux Monthly Mean Surface gflux.mon.mean.nc N/A
Ground Heat Flux Longterm Monthly Mean Surface gflux.mon.ltm.nc N/A
High Cloud Area Fraction 3-hourly forecast High Cloud Layer hcdc.yyyy.nc N/A
High Cloud Area Fraction Daily Mean High Cloud Layer hcdc.yyyy.nc N/A
High Cloud Area Fraction Monthly Mean High Cloud Layer hcdc.mon.mean.nc N/A
High Cloud Area Fraction Longterm Monthly Mean High Cloud Layer hcdc.mon.ltm.nc N/A
Geopotential Height 3-hourly value Tropopause hgt.tropo.yyyy.nc N/A
Geopotential Height Daily Mean Tropopause hgt.tropo.yyyy.nc N/A
Geopotential Height Monthly Mean Tropopause hgt.tropo.mon.mean.nc N/A
Geopotential Height Longterm Monthly Mean Tropopause hgt.tropo.mon.ltm.nc N/A
Storm Relative Helicity 3-hourly value 0-3000m above ground level hlcy.yyyy.nc N/A
Storm Relative Helicity Daily Mean 0-3000m above ground level hlcy.yyyy.nc N/A
Storm Relative Helicity Monthly Mean 0-3000m above ground level hlcy.mon.mean.nc N/A
Storm Relative Helicity Longterm Monthly Mean 0-3000m above ground level hlcy.mon.ltm.nc N/A
Planetary Boundary Layer Height 3-hourly value Surface hpbl.yyyy.nc N/A
Planetary Boundary Layer Height Daily Mean Surface hpbl.yyyy.nc N/A
Planetary Boundary Layer Height Monthly Mean Surface hpbl.mon.mean.nc N/A
Planetary Boundary Layer Height Longterm Monthly Mean Surface hpbl.mon.ltm.nc N/A
Low Cloud Area Fraction 3-hourly forecast Low Cloud Layer lcdc.yyyy.nc N/A
Low Cloud Area Fraction Daily Mean Low Cloud Layer lcdc.yyyy.nc N/A
Low Cloud Area Fraction Monthly Mean Low Cloud Layer lcdc.mon.mean.nc N/A
Low Cloud Area Fraction Longterm Monthly Mean Low Cloud Layer lcdc.mon.ltm.nc N/A
Best (4-layer) Lifted Index 3-hourly value 180-0 mb above gnd lftx4.yyyy.nc N/A
Best (4-layer) Lifted Index Daily Mean 180-0 mb above gnd lftx4.yyyy.nc N/A
Best (4-layer) Lifted Index Monthly Mean 180-0 mb above gnd lftx4.mon.mean.nc N/A
Best (4-layer) Lifted Index Longterm Monthly Mean 180-0 mb above gnd lftx4.mon.ltm.nc N/A
Latent Heat Flux 3-hourly forecast Surface lhtfl.yyyy.nc N/A
Latent Heat Flux Daily Mean Surface lhtfl.yyyy.nc N/A
Latent Heat Flux Monthly Mean Surface lhtfl.mon.mean.nc N/A
Latent Heat Flux Longterm Monthly Mean Surface lhtfl.mon.ltm.nc N/A
Medium Cloud Area Fraction 3-hourly forecast Medium Cloud Layer mcdc.yyyy.nc N/A
Medium Cloud Area Fraction Daily Mean Medium Cloud Layer mcdc.yyyy.nc N/A
Medium Cloud Area Fraction Monthly Mean Medium Cloud Layer mcdc.mon.mean.nc N/A
Medium Cloud Area Fraction Longterm Monthly Mean Medium Cloud Layer mcdc.mon.ltm.nc N/A
Horizontal Moisture Divergence 3-hourly value Hybrid level 1 mconv.hl1.yyyy.nc N/A
Horizontal Moisture Divergence Daily Mean Hybrid level 1 mconv.hl1.yyyy.nc N/A
Horizontal Moisture Divergence Monthly Mean Hybrid level 1 mconv.hl1.mon.mean.nc N/A
Horizontal Moisture Divergence Longterm Monthly Mean Hybrid level 1 mconv.hl1.mon.ltm.nc N/A
Mean Sea Level (ETA model) Pressure 3-hourly value Mean Sea Level mslet.yyyy.nc N/A
Mean Sea Level (ETA model) Pressure Daily Mean Mean Sea Level mslet.yyyy.nc N/A
Mean Sea Level (ETA model) Pressure Monthly Mean Mean Sea Level mslet.mon.mean.nc N/A
Mean Sea Level (ETA model) Pressure Longterm Monthly Mean Mean Sea Level mslet.mon.ltm.nc N/A
Moisture Availability 3-hourly value Surface mstav.yyyy.nc N/A
Moisture Availability Daily Mean Surface mstav.yyyy.nc N/A
Moisture Availability Monthly Mean Surface mstav.mon.mean.nc N/A
Moisture Availability Longterm Monthly Mean Surface mstav.mon.ltm.nc N/A
accumulated potential evaporation 3-hourly Accumulation Surface pevap.yyyy.nc N/A
accumulated potential evaporation Daily Mean Surface pevap.yyyy.nc N/A
accumulated potential evaporation Monthly Mean Surface pevap.mon.mean.nc N/A
accumulated potential evaporation Longterm Monthly Mean Surface pevap.mon.ltm.nc N/A
Potential Temperature 3-hourly value Surface pottmp.hl1.yyyy.nc N/A
Potential Temperature Daily Mean Surface pottmp.hl1.yyyy.nc N/A
Potential Temperature Monthly Mean Surface pottmp.hl1.mon.mean.nc N/A
Potential Temperature Longterm Monthly Mean Surface pottmp.hl1.mon.ltm.nc N/A
Potential Temperature 3-hourly value Surface pottmp.sfc.yyyy.nc N/A
Potential Temperature Daily Mean Surface pottmp.sfc.yyyy.nc N/A
Potential Temperature Monthly Mean Surface /pottmp.sfc.mon.mean.nc N/A
Potential Temperature Longterm Monthly Mean Surface /pottmp.sfc.mon.ltm.nc N/A
Precipitable Water for entire atmosphere 3-hourly value Surface pr_wtr.yyyy.n N/A
Precipitable Water for entire atmosphere Daily Mean Surface pr_wtr.yyyy.nc N/A
Precipitable Water for entire atmosphere Monthly Mean Surface pr_wtr.mon.mean.nc N/A
Precipitable Water for entire atmosphere Longterm Monthly Mean Surface pr_wtr.mon.ltm.nc N/A
Precipitation rate 3-hourly forecast Surface prate.yyyy.nc N/A
Precipitation rate Daily Mean Surface prate.yyyy.nc N/A
Precipitation rate Monthly Mean Surface prate.mon.mean.nc N/A
Precipitation rate Longterm Monthly Mean Surface prate.mon.ltm.nc N/A
Pressure 3-hourly value Surface /pres.sfc.yyyy.nc N/A
Pressure Daily Mean Surface pres.sfc.yyyy.nc N/A
Pressure Monthly Mean Surface pres.sfc.mon.mean.nc N/A
Pressure Longterm Monthly Mean Surface pres.sfc.mon.ltm.nc N/A
Tropopause Pressure 3-hourly value Tropopause pres.tropo.yyyy.n N/A
Tropopause Pressure Daily Mean Tropopause pres.tropo.yyyy.nc N/A
Tropopause Pressure Monthly Mean Tropopause pres.mon.mean.nc N/A
Tropopause Pressure Longterm Monthly Mean Tropopause pres.mon.ltm.nc N/A
Pressure at Mean Sea Level 3-hourly value Mean Sea Level prmsl.yyyy.nc N/A
Pressure at Mean Sea Level Daily Mean Mean Sea Level prmsl.yyyy.nc N/A
Pressure at Mean Sea Level Monthly Mean Mean Sea Level prmsl.mon.mean.nc N/A
Pressure at Mean Sea Level Longterm Monthly Mean Mean Sea Level prmsl.mon.ltm.nc N/A
Humidity Parameter Canopy Conductance 3-hourly value Surface rcq.yyyy.nc N/A
Humidity Parameter Canopy Conductance Daily Mean Surface rcq.yyyy.nc N/A
Humidity Parameter Canopy Conductance Monthly Mean Surface rcq.mon.mean.nc" N/A
Humidity Parameter Canopy Conductance Longterm Monthly Mean Surface rcq.mon.mltmnc" N/A
Solar Parameter Canopy Conductance 3-hourly value Surface rcs.yyyy.nc N/A
Solar Parameter Canopy Conductance Daily Mean Surface rcs.yyyy.nc N/A
Solar Parameter Canopy Conductance Longterm Daily Mean Surface rcs.mon.ltm.nc N/A
Solar Parameter Canopy Conductance Monthly Mean Surface rcs.mon.mean.nc N/A
Solar Parameter Canopy Conductance Longterm Monthly Mean Surface rcs.mon.ltm.nc N/A
Soil Moisture Parameter Canopy Conductance 3-hourly value Surface rcsol.yyyy.nc N/A
Soil Moisture Parameter Canopy Conductance Daily Mean Surface rcsol.yyyy.nc N/A
Soil Moisture Parameter Canopy Conductance Monthly Mean Surface rcsol.mon.mean.nc N/A
Soil Moisture Parameter Canopy Conductance Longterm Monthly Mean Surface rcsol.mon.ltm.nc N/A
Temperature Parameter Canopy Conductance 3-hourly value Surface rct.yyyy.nc N/A
Temperature Parameter Canopy Conductance Daily Mean Surface rct.yyyy.nc N/A
Temperature Parameter Canopy Conductance Monthly Mean Surface rct.mon.mean.nc N/A
Relative Humidity at 2m 3-hourly value 2m rhum.2m.yyyy.nc N/A
Relative Humidity at 2m Daily Mean 2m rhum.2m.yyyy.nc N/A
Relative Humidity at 2m Monthly Mean 2m rhum.2m.mon.mean.nc N/A
Relative Humidity at 2m Longterm Monthly Mean 2m rhum.2m.mon.ltm.nc N/A
Sensible Heat Flux 3-hourly forecast Surface shtfl.yyyy.nc N/A
Sensible Heat Flux Daily Mean Surface shtfl.yyyy.nc N/A
Sensible Heat Flux Monthly Mean Surface shtfl.mon.mean.nc N/A
Sensible Heat Flux Longterm Monthly Mean Surface shtfl.mon.ltm.nc N/A
Specific Humidity at 2m 3-hourly value 2m shum.2m.yyyy.nc N/A
Specific Humidity at 2m Daily Mean 2m shum.2m.yyyy.nc N/A
Specific Humidity at 2m Monthly Mean 2m shum.2m.mon.mean.nc N/A
Specific Humidity at 2m Longterm Monthly Mean 2m shum.2m.mon.ltm.nc N/A
Snow Depth 3-hourly value Surface snod.yyyy.nc N/A
Snow Depth Daily Mean Surface snod.yyyy.nc N/A
Snow Depth Monthly Mean Surface snod.mon.mean.nc N/A
Snow Depth Longterm Monthly Mean Surface snod.mon.ltm.nc N/A
Snow Phase-change Heat 3-hourly Average Surface snohf.yyyy.nc N/A
Snow Phase-change Heat Daily Mean Surface snohf.yyyy.nc N/A
Snow Phase-change Heat Monthly Mean Surface snohf.mon.mean.nc N/A
Snow Phase-change Heat Longterm Monthly Mean Surface snohf.mon.ltm.nc N/A
Snow Melt 3-hourly Accumulation Surface snom.yyyy.nc N/A
Snow Melt Daily Mean Surface snom.yyyy.nc N/A
Snow Melt Monthly Mean Surface snom.mon.mean.nc N/A
Snow Melt Longterm Monthly Mean Surface snom.mon.ltm.nc N/A
Snow Cover 3-hourly value Surface snowc.yyyy.nc N/A
Snow Cover Daily Mean Surface snowc.yyyy.nc N/A
Snow Cover Monthly Mean Surface snowc.mon.mean.nc N/A
Snow Cover Longterm Monthly Mean Surface snowc.mon.ltm.nc N/A
Soil Moisture Content 3-hourly value Surface soilm.yyyy.nc N/A
Soil Moisture Content Daily Mean Surface soilm.yyyy.nc N/A
Soil Moisture Content Monthly Mean Surface soilm.mon.mean.nc N/A
Soil Moisture Content Longterm Monthly Mean Surface soilm.mon.ltm.nc N/A
Surface Runoff (non-infiltrating) 3-hourly Accumulation Surface ssrun.yyyy.nc N/A
Surface Runoff (non-infiltrating) Daily Mean Surface ssrun.yyyy.nc N/A
Surface Runoff (non-infiltrating) Monthly Mean Surface ssrun.mon.mean.nc N/A
Surface Runoff (non-infiltrating) Longterm Monthly Mean Surface ssrun.mon.ltm.nc N/A
Forecast of Total Cloud Cover 3-hourly forecast Entire Atmosphere tcdc.yyyy.nc N/A
Forecast of Total Cloud Cover Daily Mean Entire Atmosphere tcdc.yyyy.nc N/A
Forecast of Total Cloud Cover Monthly Mean Entire Atmosphere tcdc.mon.mean.nc N/A
Forecast of Total Cloud Cover Longterm Monthly Mean Entire Atmosphere tcdc.mon.ltm.nc N/A
Turbulent Kinetic Energy 3-hourly value Surface tke.hl1.yyyy.nc N/A
Turbulent Kinetic Energy Daily Mean Surface tke.hl1.yyyy.nc N/A
Turbulent Kinetic Energy Monthly Mean Surface tke.hl1.mon.mean.nc N/A
Turbulent Kinetic Energy Longterm Monthly Mean Surface tke.hl1.mon.ltm.nc N/A
Upward Longwave Radiation Flux 3-hourly Average Top of Atmosphere ulwrf.ntat.yyyy.nc N/A
Upward Longwave Radiation Flux Daily Mean Top of Atmosphere ulwrf.ntat.yyyy.nc N/A
Upward Longwave Radiation Flux Monthly Mean Top of Atmosphere ulwrf.ntat.mon.mean.nc N/A
Upward Longwave Radiation Flux Longterm Monthly Mean Top of Atmosphere ulwrf.ntat.mon.ltm.nc N/A
Upward Longwave Radiation Flux 3-hourly forecast Surface ulwrf.sfc.yyyy.nc N/A
Upward Longwave Radiation Flux Daily Mean Surface ulwrf.sfc.yyyy.nc N/A
Upward Longwave Radiation Flux Monthly Mean Surface ulwrf.sfc.mon.mean.nc N/A
Upward Longwave Radiation Flux Longterm Monthly Mean Surface ulwrf.sfc.mon.ltm.nc N/A
U-component of Storm Motion 3-hourly value 0-6000m above ground level ustm.yyyy.nc N/A
U-component of Storm Motion Daily Mean 0-6000m above ground level ustm.yyyy.nc N/A
U-component of Storm Motion Monthly Mean 0-6000m above ground level ustm.mon.mean.nc N/A
U-component of Storm Motion Longterm Monthly Mean 0-6000m above ground level ustm.mon.ltm.nc N/A
Upward Shortwave Radiation Flux 3-hourly Average Top of Atmosphere uswrf.ntat.yyyy.nc N/A
Upward Shortwave Radiation Flux Daily Mean Top of Atmosphere uswrf.ntat.yyyy.nc N/A
Upward Shortwave Radiation Flux Monthly Mean Top of Atmosphere uswrf.ntat.mon.mean.nc N/A
Upward Shortwave Radiation Flux Longterm Monthly Mean Top of Atmosphere uswrf.ntat.mon.ltm.nc N/A
Upward Shortwave Radiation Flux 3-hourly Average Surface uswrf.sfc.yyyy.nc N/A
Upward Shortwave Radiation Flux Daily Mean Surface uswrf.sfc.yyyy.nc N/A
Upward Shortwave Radiation Flux Monthly Mean Surface uswrf.sfc.mon.mean.nc N/A
Upward Shortwave Radiation Flux Longterm Monthly Mean Surface uswrf.sfc.mon.ltm.nc N/A
U-wind at 10 m 3-hourly value 10m uwnd.10m.yyyy.nc N/A
U-wind at 10 m Daily Mean 10m uwnd.10m.yyyy.nc N/A
U-wind at 10 m Monthly Mean 10m uwnd.10m.mon.mean.nc N/A
U-wind at 10 m Longterm Monthly Mean 10m uwnd.10m.mon.ltm.nc N/A
Vegetation 3-hourly value Surface veg.yyyy.nc N/A
Vegetation Daily Mean Surface veg.yyyy.nc N/A
Vegetation Monthly Mean Surface veg.mon.mean.nc N/A
Vegetation Longterm Monthly Mean Surface veg.mon.ltm.nc N/A
Visibility 3-hourly value Surface vis.yyyy.nc N/A
Visibility Daily Mean Surface vis.yyyy.nc N/A
Visibility Monthly Mean Surface vis.mon.mean.nc N/A
Visibility Longterm Monthly Mean Surface vis.mon.ltm.nc N/A
V-component of Storm Motion 3-hourly value 0-6000m above ground level vstm.yyyy.nc N/A
V-component of Storm Motion Daily Mean 0-6000m above ground level vstm.yyyy.nc N/A
V-component of Storm Motion Monthly Mean 0-6000m above ground level vstm.mon.mean.nc N/A
V-component of Storm Motion Longterm Monthly Mean 0-6000m above ground level vstm.mon.mltmnc N/A
Pressure Vertical Velocity 3-hourly value Hybrid level 1 vvel.hl1.yyyy.nc N/A
Pressure Vertical Velocity Daily Mean Hybrid level 1 vvel.hl1.yyyy.nc N/A
Pressure Vertical Velocity Monthly Mean Hybrid level 1 vvel.hl1.mon.mean.nc N/A
Pressure Vertical Velocity Longterm Monthly Mean Hybrid level 1 vvel.hl1.mon.ltm.nc N/A
V-wind at 10 m 3-hourly value 10m vwnd.10m.yyyy.nc N/A
V-wind at 10 m Daily Mean 10m vwnd.10m.yyyy.nc N/A
V-wind at 10 m Monthly Mean 10m vwnd.10m.mon.mean.nc N/A
V-wind at 10 m Longterm Monthly Mean 10m vwnd.10m.mon.ltm.nc N/A
Vertical Speed Shear 3-hourly value Tropopause vwsh.tropo.yyyy.nc N/A
Vertical Speed Shear Daily Mean Tropopause vwsh.tropo.yyyy.nc N/A
Vertical Speed Shear Monthly Mean Tropopause vwsh.tropo.mon.mean.nc N/A
Vertical Speed Shear Longterm Monthly Mean Tropopause vwsh.tropo.mon.ltm.nc N/A
Water Condensate Flux Convergence Accumulation 3-hourly Accumulation Entire Atmosphere wcconv.yyyy.nc N/A
Water Condensate Flux Convergence Accumulation Daily Mean Entire Atmosphere wcconv.yyyy.nc N/A
Water Condensate Flux Convergence Accumulation Monthly Mean Entire Atmosphere wcconv.mon.mean.nc N/A
Water Condensate Flux Convergence Accumulation Longterm Monthly Mean Entire Atmosphere wcconv.mon.ltm.nc N/A
Water Condensate Added by Precip. Assimilation Accumulation 3-hourly Accumulation Entire Atmosphere wcinc.yyyy.nc N/A
Water Condensate Added by Precip. Assimilation Accumulation Daily Mean Entire Atmosphere wcinc.yyyy.nc N/A
Water Condensate Added by Precip. Assimilation Accumulation Monthly Mean Entire Atmosphere wcinc.mon.mean.nc N/A
Water Condensate Added by Precip. Assimilation Accumulation Longterm Monthly Mean Entire Atmosphere wcinc.mon.ltm.nc N/A
Water Condensate Zonal Flux Accumulation 3-hourly Accumulation Entire Atmosphere wcuflx.yyyy.nc N/A
Water Condensate Zonal Flux Accumulation Daily Mean Entire Atmosphere wcuflx.yyyy.nc N/A
Water Condensate Zonal Flux Accumulation Monthly Mean Entire Atmosphere wcuflx.mon.mean.nc N/A
Water Condensate Meridional Flux Accumulation 3-hourly Accumulation Entire Atmosphere wcvflx.yyyy.nc N/A
Water Condensate Meridional Flux Accumulation Daily Mean Entire Atmosphere wcvflx.yyyy.nc N/A
Water Condensate Meridional Flux Accumulation Monthly Mean Entire Atmosphere wcvflx.mon.mean.nc N/A
Water Condensate Meridional Flux Accumulation Longterm Monthly Mean Entire Atmosphere wcvflx.mon.ltm.nc N/A
Accumulated Snow 3-hourly forecast Surface weasd.yyyy.nc N/A
Accumulated Snow Daily Mean Surface weasd.yyyy.nc N/A
Accumulated Snow Monthly Mean Surface weasd.mon.mean.nc N/A
Accumulated Snow Longterm Monthly Mean Surface weasd.mon.ltm.nc N/A
Water Vapor Flux Convergence Accumulation 3-hourly Accumulation Entire Atmosphere wvconv.yyyy.nc N/A
Water Vapor Flux Convergence Accumulation Daily Mean Entire Atmosphere wvconv.yyyy.nc N/A
Water Vapor Flux Convergence Accumulation Monthly Mean Entire Atmosphere wvconv.mon.mean.nc N/A
Water Vapor Flux Convergence Accumulation Longterm Monthly Mean Entire Atmosphere wvconv.mon.ltm.nc N/A
Water Vapor Added by Precip. Assimilation Accumulation 3-hourly Accumulation Entire Atmosphere wvinc.yyyy.nc N/A
Water Vapor Added by Precip. Assimilation Accumulation Daily Mean Entire Atmosphere wvinc.yyyy.nc N/A
Water Vapor Added by Precip. Assimilation Accumulation Monthly Mean Entire Atmosphere wvinc.mon.mean.nc N/A
Water Vapor Added by Precip. Assimilation Accumulation Longterm Monthly Mean Entire Atmosphere wvinc.mon.ltm.nc N/A
Water Vapor Zonal Flux Accumulation 3-hourly Accumulation Entire Atmosphere wvuflx.yyyy.nc N/A
Water Vapor Zonal Flux Accumulation Daily Mean Entire Atmosphere wvuflx.yyyy.nc N/A
Water Vapor Zonal Flux Accumulation Monthly Mean Entire Atmosphere wvuflx.mon.mean.nc N/A
Water Vapor Zonal Flux Accumulation Longterm Monthly Mean Entire Atmosphere wvuflx.mon.ltm.nc N/A
Water Vapor Meridional Flux Accumulation 3-hourly Accumulation Surface wvvflx.yyyy.nc N/A
Water Vapor Meridional Flux Accumulation Daily Mean Entire Atmosphere wvvflx.yyyy.nc N/A
Water Vapor Meridional Flux Accumulation Monthly Mean Entire Atmosphere wvvflx.mon.mean.nc N/A
Water Vapor Meridional Flux Accumulation Longterm Monthly Mean Entire Atmosphere wvvflx.mon.ltm.nc N/A

Time-Invariant Data

Download/Plot Data: Monolevel Data

Variable Statistic Level Download File Create Plot/Subset
Surface Geopotential Height -- Surface hgt.sfc.nc N/A
Land-sea mask -- Surface land.nc N/A

* What is Surface Temperature

The surface temperature is the "skin" temperature. Over water, it is the SST. Over land, it would be the "radiative" temperature of the surface. The skin temperature is generated from the land surface model. Note, the skin temperature is not the top layer soil temperature. During the day, the surface temperature is typically higher than the soil and 2 meter air temperature.

Also Available Plotting Pages:

Usage Restrictions:

  • None

Detailed Description:

  • The NARR project is an extension of the NCEP Global Reanalysis which is run over the North American Region. The NARR model uses the very high resolution NCEP Eta Model (32km/45 layer) together with the Regional Data Assimilation System (RDAS) which, significantly, assimilates precipitation along with other variables. The improvements in the model/assimilation have resulted in a dataset with substantial improvements in the accuracy of temperature, winds and precipitation compared to the NCEP-DOE Global Reanalysis 2. We currently have output from Jun 2006 which includes 8 times daily data at 29 levels and most of the variables. For a complete list of model output variables, see NCEP's variable list.
  • Additional information can be found at NCEP's NARR page.

Caveats:

  • Useful information can be found at NCEP's NARR FAQ page and from Albany's Department of Atmospheric Science NARR Usage Notes .
  • The acpcp values for 0Z 1 October 1994 and 3Z 11 June 2005 seem to be in error.

Related File Naming & Structure Information:

File Names:

  • 8-times daily and daily File names are composed of variable abbreviations and year: (variable).(year).nc(In directory: /Datasets/NARR/monolevel/ or /Datasets/NARR/Dailies/monolevel)
  • Monthly means/ltms are (variable).mon.mean.nc in /Datasets/NARR/Monthlies/monolevel

Dataset Format and Size:

  • All data are stored in PSD standard NetCDF files and are (packed).
  • The data are divided by variable and year into separate files
  • There are 2100 files currently
  • Size of file is about 1.4G per variable per year/month for 8xdaily data
  • Size of file is about 68M per variable per /month for monthly data
  • Current total of 29.4 Tbytes for 8xDaily.
  • 8x daily data are available from ftp.cdc.noaa.gov in /Datasets/NARR/.
  • The 8x data files are quite large, so you may only be able to download them if you have a fast network connection.

Missing Data:

  • Missing data is flagged with a value of 32767s.

Citation:

  • Please note: If you acquire NARR data products from PSD, we ask that you acknowledge us in your use of the data. This may be done by including text such as NARR data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/ in any documents or publications using these data. We would also appreciate receiving a copy of the relevant publications. This will help PSD to justify keeping the NARR data set freely available online in the future. Thank you!
  • NORTH AMERICAN REGIONAL REANALYSIS: A long-term, consistent, high-resolution climate dataset for the North American domain, as a major improvement upon the earlier global reanalysis datasets in both resolution and accuracy, Fedor Mesinger et. al, submitted to BAMS 2004.

References:

  • NORTH AMERICAN REGIONAL REANALYSIS: A long-term, consistent, high-resolution climate dataset for the North American domain, as a major improvement upon the earlier global reanalysis datasets in both resolution and accuracy, Fedor Mesinger et. al, submitted to BAMS 2004.

Original Source:

  • Dataset was originally produced at NOAA's National Center for Atmospheric Prediction (NCEP) and is available in it's original grib format through NOAA NCDC's access page. It is also available in the same format from NCAR.

Contact:

  • Physical Sciences Division: Data Management
    NOAA/ESRL/PSD
    325 Broadway
    Boulder, CO 80305-3328
    esrl.psd.data@noaa.gov