Abstract SSM/I has been applied in derivation of liquid water and precipitation for many years. Due to the uncertainty in variance of surface emissivity and characters of precipitation, the comparison of rainfall retrieval with ground truth remains a controversial issue. In order to investigate this issue, data set for precipitation from stratus clouds over ocean area were collected for 5 years...

Most of the works on estimation of land surface emissivity from satellite radiometric measurements are performed at the frequencies d 100 GHz in the past two decades [1-3]. In the frequency range of AMSU-B (89-183 GHz) the land surface emissivity problems draw attention from scientific community recently mainly because of difficulty associated with precipitation retrievals over land. For liquid...