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Article: Estimating upper-tropospheric water vapor from SSM/T-2 satellite measurements
- Article from:
- Journal of Applied Meteorology and Climatology
- Article date:
- April 1, 2003
- Author:
CopyrightCopyright American Meteorological Society Apr 2003. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
A method and a passive microwave retrieval algorithm have been developed to retrieve upper-tropospheric water vapor (UTW) from Special Sensor Microwave Water Vapor Profiler (SSM/T-2) measurements taken at three discrete frequencies near the 183-GHz water vapor line. The algorithm is based on physical relaxation utilizing statistical covariance information to provide initial-guess profiles and to constrain the updating step in the relaxation process. The scheme incorporates a method to remove SSM/T-2 brightness temperature bias in comparison with collocated simulated brightness temperatures. Correction functions are designed for the three SSM/T-2 183-GHz channels. The algorithm is ...