Statistical and Synoptic Evaluations of TIROS-N and NOAA-6 Retrievals

摘要

TIROS N and NOAA 6 temperature retrievals are evaluated using statistical parameters and synoptic case studies. A period from September 1979 through April 1980 is examined with the use of the root mean square (RMS) and mean difference between matched pairs of radiosonde and satellite derived layer mean temperatures. The monthly samples are divided according to retrieval method (clear, partly cloudy, and cloudy), and topography type (land or sea). The principal results show that the largest RMS differences occur in the layers near the Earth's surface and in the tropopause region, with the clear retrievals giving the smallest RMS differences and cloudy retrievals producing the largest.