NCEP North American Regional Reanalysis (NARR), for 1979 to Present

browse graphicNorth American Regional Reanalysis (NARR) grid domain
The North America Regional Reanalysis (NARR) Project is a reanalysis of historical observations using a 32-km version of the National Centers for Environmental Prediction (NCEP) 1993 operational ETA model and ETA data assimilation system (EDAS). The objective is to create a long-term set of consistent climate data on a regional scale for the North American domain. The domain of analyses includes North and Central America as well as small parts of the United Kingdom, Eastern Asia, South America, and areas of the Pacific and Atlantic Oceans. The period of the reanalyses is from October 1978 to the present and analyses were made 8 times daily (3 hour intervals). Horizontal boundary conditions are derived from the NCEP/DOE Global Reanalysis. Advantages over the widely used NCEP/NCAR Reanalysis (180 km) are its higher spatial and temporal resolutions (32 km grid, 45 vertical layers, every three hours) and better treatment of the land surface. This is achieved through the use of a better land-surface model (Noah LSM), the assimilation of more observational data (precipitation, upper air and surface winds), and through a better representation of the terrain (heights, vegetation, soil type). This data set contains "conventional" atmospheric analyses as well as model-derived fields that contain estimates of subsurface, surface, and radiative properties. This data set is encoded in WMO GRIB format version 1 using the NCEP GRIB table 131. The model used a native, "E-grid" for its calculations, however data were interpolated to a Lambert Conformal Conic projection, also known as NAM 221 AWIPS Grid - High Resolution North American Master Grid (32-km Resolution). All vector components are earth relative rather than grids relative which is the convention for operational NCEP model. The list of fields produced by the NARR ETA model differ from the operational ETA model. NARR data files that are compatible with the Grid Analysis and Display System (GrADS) are available.
Cite this dataset when used as a source.
  • gov.noaa.ncdc:C00618
Download Data
Distribution Formats
  • GRIB (Version: Version 1)
    • File Specification: These files are in WMO GRIB 1 format using NCEP Parameter Table Version 131. NCEP Parameter Table Version 2: http://www.nco.ncep.noaa.gov/pmb/docs/on388/table2.html Data are projected on AWIPS Grid 221. Descriptions for the Regional - NOAMHI - High Resolution North American Master Grid (Lambert Conformal): http://www.nco.ncep.noaa.gov/pmb/docs/on388/tableb.html#GRID221
    • File Compression: Documentation and decoding software for NCEP WMO GRIB1: http://www.nco.ncep.noaa.gov/pmb/codes/GRIB1/
  • NetCDF
    • File Compression: Unidata documentation and support for NetCDF software: http://www.unidata.ucar.edu/software/netcdf/
Ordering Instructions Access Instructions: Visit the NOMADS THREDDS Data Server to locate desired data. Select Data Access Type: OPENDAP, HTTP Server, WCS, or NetCDF Server. For the NetCDF Grid Subset Server, select grids, bounding box and time range, to return a NetCDF file with CF Conventions. Ordering Instructions: Visit the website for the dataset or contact NCDC to place an order through the User Engagement and Services Branch. For more information about ordering from NCDC, visit http://www.ncdc.noaa.gov/oa/about/ncdcordering.html
Distributor Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Dataset Point of Contact Customer Engagement Branch
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
1-828-271-4800
ncei.orders@noaa.gov
Time Period 1978-10-01 to Present
Spatial Bounding Box Coordinates
N: 85.0
S: 8.0
E: -5.0
W: -150.0
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2004-01-01
Data Presentation Form Digital model - multi-dimensional digital representation of a feature, process, etc.
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Monthly
Purpose To create a long-term, consistent, high-resolution climate dataset for the North American domain.
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Atmosphere > Air Quality > Visibility
  • Earth Science > Atmosphere > Altitude > Geopotential Height
  • Earth Science > Atmosphere > Altitude > Barometric Altitude
  • Earth Science > Atmosphere > Altitude > Tropopause
  • Earth Science > Atmosphere > Altitude > Planetary Boundary Layer Height
  • Earth Science > Atmosphere > Atmospheric Phenomena
  • Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements
  • Earth Science > Atmosphere > Atmospheric Pressure > Planetary Boundary Layer Height
  • Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure
  • Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure
  • Earth Science > Atmosphere > Atmospheric Radiation > Albedo
  • Earth Science > Atmosphere > Atmospheric Radiation > Atmospheric Emitted Radiation
  • Earth Science > Atmosphere > Atmospheric Radiation > Heat Flux
  • Earth Science > Atmosphere > Atmospheric Radiation > Incoming Solar Radiation
  • Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation
  • Earth Science > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation
  • Earth Science > Atmosphere > Atmospheric Radiation > Radiative Flux
  • Earth Science > Atmosphere > Atmospheric Radiation > Shortwave Radiation
  • Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Air Temperature
  • Earth Science > Atmosphere > Atmospheric Temperature > Dew Point Temperature
  • Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Potential Temperature
  • Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Condensation
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Dew Point Temperature
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Evaporation
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Evapotranspiration
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Precipitable Water
  • Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor
  • Earth Science > Atmosphere > Atmospheric Winds > Surface Winds
  • Earth Science > Atmosphere > Atmospheric Winds > Upper Level Winds
  • Earth Science > Atmosphere > Atmospheric Winds > Vertical Wind Motion
  • Earth Science > Atmosphere > Atmospheric Winds > Wind Shear
  • Earth Science > Atmosphere > Clouds > Cloud Properties > Cloud Frequency
  • Earth Science > Atmosphere > Clouds > Cloud Base
  • Earth Science > Atmosphere > Clouds > Cloud Height
  • Earth Science > Atmosphere > Clouds > Cloud Liquid Water/ice
  • Earth Science > Atmosphere > Clouds > Cloud Precipitable Water
  • Earth Science > Atmosphere > Clouds > Cloud Top Pressure
  • Earth Science > Atmosphere > Clouds > Cloud Top Temperature
  • Earth Science > Atmosphere > Clouds > Cloud Types
  • Earth Science > Atmosphere > Clouds > Cloud Vertical Distribution
  • Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain > Freezing Rain
  • Earth Science > Atmosphere > Precipitation > Precipitation Amount
  • Earth Science > Atmosphere > Precipitation > Precipitation Rate
  • Earth Science > Atmosphere > Precipitation > Liquid Precipitation > Rain
  • Earth Science > Atmosphere > Precipitation > Solid Precipitation > Ice Pellets > Sleet
  • Earth Science > Atmosphere > Precipitation > Solid Precipitation > Snow
  • Earth Science > Cryosphere > Snow/ice > Snow Cover
  • Earth Science > Cryosphere > Snow/ice > Snow Depth
  • Earth Science > Cryosphere > Snow/ice > Snow Melt
  • Earth Science > Hydrosphere > Surface Water > Runoff
  • Earth Science > Land Surface > Surface Thermal Properties > Land Surface Temperature
  • Earth Science > Land Surface > Soils > Soil Moisture/water Content
  • Earth Science > Land Surface > Soils > Soil Temperature
  • Earth Science > Land Surface > Surface Radiative Properties > Albedo
  • Earth Science > Land Surface > Topography > Terrain Elevation > Digital Elevation/Terrain Model (DEM)
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Continent > North America
  • Continent > North America > Canada
  • Continent > North America > Central America
  • Continent > North America > Greenland
  • Continent > North America > Mexico
  • Continent > North America > United States Of America
Stratum keywords Global Change Master Directory (GCMD) Location Keywords
  • Vertical Location > Land Surface
  • Vertical Location > Sea Surface
  • Vertical Location > Boundary Layer
  • Vertical Location > Troposphere
  • Vertical Location > Stratosphere
Use Constraints
  • NCEI cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NCEI makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Fees
  • In most cases, electronic downloads of the data are free, however fees may apply for data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: repository
Processing Steps
  • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
Acquisition Information (collection)
Instrument
  • > NOT APPLICABLE
Platform
  • MODELS
Last Modified: 2018-05-17
For questions about the information on this page, please email: ncei.orders@noaa.gov