2005•Unpublished venueOpen access

Measurements of integrated water vapor and cloud liquid water from microwave radiometers at the DOE ARM Cloud and Radiation Testbed in the U.S. southern Great Plains

James C. Liljegren, Barry M. Lesht

Abstract

The operation and calibration of the ARM microwave radiometers is summarized. Measured radiometric brightness temperatures are compared with calculations based on the model of Liebe and Layton (1987) using co-located radiosondes. Comparisons of precipitable water vapor retrieved from the radiometer with integrated soundings and co-located GPS retrievals are presented. The three water vapor sensing systems are shown to agree to within about 1 mm.

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Key concepts: Radiosonde, Radiometer, Water vapor, Microwave radiometer, Remote sensing, Environmental science, Microwave, Brightness temperature