The effect of convective life cycle stage on microwave brightness temperature/rainrate relations as determined from 3-D cloud model resultsThe relationship between the rain rate and the brightness temperature (Tb) was investigated using a cloud model/microwave radiative transfer model combination to obtain the rain-rate/Tb relations for four different frequencies: 10, 19, 37, and 86 GHz. The results at 19, 37, and 86 GHz were found to be significantly affected by ice in the modeled convective system, while the results at 10 GHz showed very little effect. Nonprecipitating cloud water was found to affect Tb in two ways. First, at low rain rates, the presence of significant cloud water produced higher Tb values than in cases with little cloud water. The second effects occurs at 19, 37, and 86 GHz at higher rainrates associated with significant ice formation; the scattering by ice lowered the Tb.
Document ID
19920031376
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Adler, Robert F. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tao, Wei-Kuo (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Simpson, Joanne (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Prasad, N. (General Sciences Corp. Laurel, MD, United States)
Yeh, H.-Y. M. (Caelum Research Corp. Silver Spring, MD, United States)