期刊
GEOPHYSICAL RESEARCH LETTERS
卷 32, 期 10, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2005GL022742
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Interrelationships between volume extinction coefficient (sigma), ice water content (IWC), and effective radius (r(e)), each dependent upon the particle size distribution (PSD) and temperature (T), are developed using in-situ microphysical measurements at low and mid-latitudes, remote sensing data, and model results. The ratio [(IWC)/sigma], proportional to r(e), increases with T. Lower values of [IWC/sigma] are observed near cloud top and base than within a cloud layer, although [IWC/sigma] changes more with temperature than relative height within the cloud. For equivalent radar reflectivities (Z(e)) below about -28 dB, the minimum detectable with forthcoming spaceborne cloud radar, [IWC/sigma] is a nearly constant value. IWC increases almost linearly with sigma, with a temperature-dependence noted.
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