Global lower tropospheric temperatures are derived from a series of microwave sounding instruments flown on a series of satellites. Daily Zonal and Monthly Temperature Anomalies for the lower troposphere on a global 2.5 degree grid are derived from both the Advanced Microwave Sounding Unit (AMSU), and from the Microwave Sounding Unit (MSU) using the Limb 90 correction. The data set begins on January 1, 1978 and is ongoing.
Other Citation Details:
Spencer, Roy W.1999. AMSU/MSU LOWTROPO DAY/MONTH TEMP ANOMALIES AND ANNUAL CYCLE [indicate subset used]. Dataset available online from the NASA Global Hydrology Resource Center DAAC, Huntsville, Alabama, U.S.A. DOI: http://dx.doi.org/10.5067/GHRC/AMSU-A/DATA302