NOAA ESRL PSD rean20thcent V2 six-hourly monolevel sig995

Resolution: 2x2; Longitude: global; Latitude: global; Time: [0000 1 Jan 1871,1800 31 Dec 2008]

• 6-hourly Air Temperature at sigma level 0.995 (Kelvin_scale) [ lon lat time ]
• 6-hourly Omega at sigma level 0.995 (Pascal/s) [ lon lat time ]
• 6-hourly Potential Temperature at sigma level 0.995 (Kelvin_scale) [ lon lat time ]
• 6-hourly Relative Humidity at sigma level 0.995 (percent) [ lon lat time ]
• 6-hourly U-wind at sigma level 0.995 (m/s) [ lon lat time ]
• 6-hourly V-wind at sigma level 0.995 (m/s) [ lon lat time ]