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NCEP-DOE Reanalysis 2: Pressure Level

Other Grid Types: NCEP Reanalysis2 Main Page | Pressure Level Data | Surface Data | Gaussian Grid Data | Spectral Coefficents Data

Brief Description:

  • NCEP-DOE Reanalysis 2 is an improved version of the NCEP Reanalysis I model that fixed errors and updated paramterizations of of physical processes

Temporal Coverage:

  • 4-times and monthly values for 1979/01/01 to 2014/06/30 .

Spatial Coverage:

  • 2.5-degree latitude x 2.5-degree longitude global grid (144x73).
  • 90N - 90S, 0E - 357.5E

Levels:

  • 1000, 925, 850, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10mb

Update Schedule:

  • Updates adding the previous year's data occur during the first quarter of the next

Download/Plot Data:

Variable Statistic Level Download File Create Plot/Subset
Air Temperature 4-times Daily Values 1000-10mb See list plot
Air Temperature Daily Mean 1000-10mb See list plot
Air Temperature Monthly Mean 1000-10mb air.mon.mean.nc plot
Geopotential Height 4-times Daily Values 1000-10mb See list plot
Geopotential Height Daily Mean 1000-10mb See list plot
Geopotential Height Monthly Mean 1000-10mb hgt.mon.mean.nc plot
Relative Humidity 4-times Daily Values 1000-10mb See list plot
Relative Humidity Daily Mean 1000-10mb See list plot
Relative Humidity Monthly Mean 1000-10mb rhum.mon.mean.nc plot
Omega 4-times Daily Values 1000-10mb See list plot
Omega Daily Mean 1000-10mb See list plot
Omega Monthly Mean 1000-10mb omega.mon.mean.nc plot
u-wind 4-times Daily Values 1000-10mb See list plot
u-wind Daily Mean 1000-10mb See list plot
u-wind Monthly Mean 1000-10mb uwnd.mon.mean.nc plot
v-wind 4-times Daily Values 1000-10mb See list plot
v-wind Daily Mean 1000-10mb See list plot
v-wind Monthly Mean 1000-10mb vwnd.mon.mean.nc plot

Usage Restrictions:

  • None

Detailed Description:

  • The NCEP-DOE Reanalysis 2 project is using a state-of-the-art analysis/forecast system to perform data assimilation using past data from 1979 through the previous year. A large subset of this data is available from PSD in its original 4 times daily format and as daily averages.

Caveats

  • None for pressure level data.

Related File Naming & Structure Information:

File Names:

  • var.time.stat.nc   (In directory: /Datasets/ncep.reanalysis2/pressure)
  • var.time.stat.nc   (In directory: /Datasets/ncep.reanalysis2.dailyavgs/pressure)
  • var.stat.nc   (In directory: /Datasets/ncep.reanalysis2.derived/pressure)

Dataset Format and Size:

  • All data are stored in NetCDF files
  • Data is packed in those files.
  • There are 276 files currently
  • Sizes range from 51 Mbytes to 521 Mbytes per variable per year
  • The 4x data files are quite large, so you may only be able to download them if you have a fast network connection.
  • Current total of 68 Gbytes for 4xDaily and 17 Gbytes for daily averages
  • By anonymous FTP:
  • Missing Data:

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

    Citation:

    • Please note: If you acquire NCEP-DOE Reanalysis 2 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 NCEP-DOE Reanalysis 2 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 NCEP-DOE Reanalysis 2 data set freely available online in the future. Thank you!

    References:

    Original Source:

    • NOAA National Centers for Environmental Predictions

    Contact:

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