20th Century Reanalysis fields for November and December 2010 have been regenerated due to a misspecification of the sea surface temperature fields as of 25 May 2012. All derived files have been recomputed as of 18 June 2012. The re-run is supported by the US Department of Energy Office of Science
20th Century Reanalysis
This plot shows the anomalous 500mb geopotential height over the North American Region for the 5 highest PNA index days in the 1950's.
Options to produce plot are using the Daily 20th Century Plotting page
- geopotential height
- 11/22/1954, 1/29/1952, 11/19,1954. 11/23/1954, 2/15/1954
- Map projection: PNA