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JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 97, NO. D11, PAGES 11,567–11,574, 1992

Estimation of Ice Cloud Parameters From Ground-Based Infrared Radiometer and Radar Measurements

S. Y. Matrosov

Cooperative Institute for Research in Environmental Sciences, University of Colorado/NOAA, Boulder


T. Uttal

NOAA Environmental Research Laboratories, Wave Propagation Laboratory, Boulder, Colorado


J. B. Snider

NOAA Environmental Research Laboratories, Wave Propagation Laboratory, Boulder, Colorado


R. A. Kropfli

NOAA Environmental Research Laboratories, Wave Propagation Laboratory, Boulder, Colorado


Abstract

A technique is presented to estimate ice cloud particle characteristic sizes and concentrations as well as the integrated ice water path from simultaneous ground-based radar and infrared radiometer measurements. The approach is based on the theoretical consideration of infrared thermal radiative transfer within a cloud and can be applied to clouds that are semitransparent in the infrared “window” and horizontally extensive. The suggested technique is applied to radar and infrared radiometer data collected during the Cloud Lidar and Radar Exploratory Test (CLARET-I) experiment. Retrieved values of ice cloud microphysical parameters are in general agreement with results obtained by other methods.

Received 17 September 1991; accepted 22 April 1992.


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Citation: Matrosov, S. Y., T. Uttal, J. B. Snider, and R. A. Kropfli (1992), Estimation of Ice Cloud Parameters From Ground-Based Infrared Radiometer and Radar Measurements, J. Geophys. Res., 97(D11), 11,567–11,574.