Title :
Model-derived brightness temperature in AMSU moisture channels for various precipitation structures: Comparison of two radiative transfer formulations
Author :
Burns, Barbara A. ; Wu, Xiangqian ; Diak, George R.
Author_Institution :
Wisconsin Univ., Madison, WI, USA
Abstract :
The importance of accounting for scattering at AMSU frequencies in water vapor retrieval routines is investigated. Brightness temperature simulations of a convective storm system are made by applying two radiative transfer routines to forecast model output of atmospheric, cloud and rain profiles. One routine accounts only for the absorption due to cloud water while the other also considers scattering from precipitating hydrometeors. Results show that the scattering due to precipitation reduces the brightness temperature by 5 K or less compared to the case where scattering is ignored. The rain signal in satellite observations of the same event is much stronger, suggesting that the information on rain supplied by the forecast model is not sufficiently detailed
Keywords :
atmospheric precipitation; atmospheric techniques; inverse problems; microwave measurement; millimetre wave measurement; radiometry; rain; remote sensing; AMSU moisture channel; Advanced Microwave Sounding Unit; EHF SHF; atmosphere; convective storm; forecast model; humidity; measurement technique; meteorology; microwave radiometry; mm wave millimetric; model-derived brightness temperature; precipitation; radiative transfer formulation; rain; satellite remote sensing; scattering; simulation; water vapor retrieval routine; Absorption; Atmospheric modeling; Brightness temperature; Clouds; Frequency; Moisture; Predictive models; Rain; Scattering; Tropical cyclones;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1995. IGARSS '95. 'Quantitative Remote Sensing for Science and Applications', International
Conference_Location :
Firenze
Print_ISBN :
0-7803-2567-2
DOI :
10.1109/IGARSS.1995.521084
