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NOAA ESRL PSD rean20thcent V2 six-hourly monolevel: Ensemble Mean Monolevel Data
Entire Atmosphere
Resolution: 2x2; Longitude: global; Latitude: global; Time: [0000 1 Jan 1871,1800 31 Dec 2008]
Mean Sea Level
Resolution: 2x2; Longitude: global; Latitude: global; Time: [0000 1 Jan 1871,1800 31 Dec 2008]
Surface
Resolution: 2x2; Longitude: global; Latitude: global; Time: [0000 1 Jan 1871,1800 31 Dec 2008]
Sigma Level 0.995
Resolution: 2x2; Longitude: global; Latitude: global; Time: [0000 1 Jan 1871,1800 31 Dec 2008]
Tropopause
Resolution: 2x2; Longitude: global; Latitude: global; Time: [0000 1 Jan 1871,1800 31 Dec 2008]