NCEP North American Regional Reanalysis (NARR)
d608000
Abstract:
The NCEP North American Regional Reanalysis products are on the Eta 221 grid at 29 pressure levels. They were produced using the Eta 32 km model with 45 vertical layers. The input data includes all observations used in NCEP/NCAR Global Reanalysis project, and additional precipitation data, TOVS 1B radiances, profiler data, land surface and moisture data, etc. The output analyses are 3-hourly with additional 9 variables in the 3-hour forecasts to reflect accumulations or averages.
NARR reruns from 20090311 to 20091214 are updated on February 4, 2010. In April 2015, NCEP has released rerun 4 from April 1, 2009 to January 31, 2015 to fix codes and Mexico precipitation data preparation.
Temporal Range:
1979-01-01 00:00 +0000 to 2025-07-01 00:00 +0000
(Entire dataset)
Period details by dataset product
Period details by dataset product
1979-11-08 00:00 +0000 (Constant fields of NARR)
1979-01-01 00:00 +0000 to 2022-01-01 00:00 +0000 (NCEP's NARR monthly means)
2004-07-01 00:00 +0000 to 2004-08-16 00:00 +0000 (Special NARR runs for 2004 NAME)
1979-01-01 00:00 +0000 to 2025-07-01 00:00 +0000 (original NCEP NARR 3-hourly files)
1979-01-01 00:00 +0000 to 2025-07-01 00:00 +0000 (regrouped 3-hourly files)
Updates:
Monthly
Variables:
| Air Temperature | Albedo | Canopy Characteristics | Cloud Base Pressure |
| Cloud Frequency | Cloud Liquid Water/Ice | Cloud Top Pressure | Dew Point Temperature |
| Evaporation | Freezing Rain | Geopotential Height | Heat Flux |
| Humidity | Hydrostatic Pressure | Longwave Radiation | Planetary Boundary Layer Height |
| Potential Temperature | Precipitation Amount | Precipitation Rate | Rain |
| Runoff | Sea Level Pressure | Shortwave Radiation | Skin Temperature |
| Snow | Snow Cover | Snow Depth | Snow Melt |
| Snow Water Equivalent | Soil Moisture/Water Content | Soil Temperature | Surface Pressure |
| Surface Winds | Total Precipitable Water | Tropopause | Upper Air Temperature |
| Upper Level Winds | Vegetation Cover | Vertical Wind Velocity/Speed | Water Vapor |
| Wind Shear |
Vertical Levels:
See the detailed metadata for level information.
Data Types:
Grid
Spatial Coverage:
Longitude Range: Westernmost=148.64E Easternmost=2.568W
Latitude Range: Southernmost=0.897N Northernmost=85.333N Detailed coverage information Detailed coverage information 32.463km x 32.463km (at 50N) oriented 107W (349x277 Lambert Conformal starting at 1N,145.5W)
Latitude Range: Southernmost=0.897N Northernmost=85.333N Detailed coverage information Detailed coverage information 32.463km x 32.463km (at 50N) oriented 107W (349x277 Lambert Conformal starting at 1N,145.5W)
Data Contributors:
DOC/NOAA/NWS/NCEP
National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce
Related Resources:
Total Volume:
16.06 TB
(Entire dataset)
Volume details by dataset product
Volume details by dataset product
Constant fields of NARR: 4.85 MB
original NCEP NARR 3-hourly files: 7.87 TB
regrouped 3-hourly files: 7.88 TB
NCEP's NARR monthly means: 247.88 GB
NCEP's NARR long term climatologies: 20.26 GB
Special NARR runs for 2004 NAME: 42.26 GB
Data Formats:
More Details:
View a more detailed summary of the data, including specific date ranges and locations by parameter
Metadata Record:
Data License:
This work is licensed under a Creative Commons Attribution 4.0 International License.
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