We have transitioned the data files from netCDF3 to netCDF4-classic format. As a result, the files are compressed instead of being packed with a scale and offset. As with any netCDF4 file, the user interface will perform the uncompression. We expect the files to be read faster, depending on the application you are using. Please let us know if you run into any issues.

20th Century Reanalysis V2

This plot shows a snippet from the timeseries of daily mean 1000mb zonal wind at the grid point 0,0E,0N.

Options to produce plot are using the PSD daily time series extraction web page

  • Select 20th Century Reanalysis
  • Select: Variable: geopotential height
  • Select: Level: 1000mb
  • Select: latitude 0 to 0
  • Select longitude: 0 to 0
  • Select: Get timeseries
  • Select: 1990 to 1991