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 the anomalous 10m zonal wind anomalies over the tropical Pacific for Jan-Feb 1919, the year of a strong El Nino.

Options to produce plot are using the Monthly/Seasonal 20th Century V2 Plotting page

  • 10m zonal wind
  • Jan-Feb
  • 1919 for year
  • Anomalies
  • Map projection: Tropical Pacific