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Parametrization of effective sizes of cirrus‐cloud particles and its verification against observations
Author(s) -
Sun Zhian,
Rikus Lawrie
Publication year - 1999
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49712556012
Subject(s) - parametrization (atmospheric modeling) , cirrus , radiative transfer , cloud computing , cloud physics , ice crystals , optical depth , ice cloud , physics , computational physics , statistical physics , environmental science , meteorology , computer science , optics , aerosol , operating system
A simplified parametrization of effective sizes of cirrus‐cloud particles is developed in terms of the ice‐water content and the cloud temperature based on some earlier studies. the effective particle sizes of the cirrus clouds determined using the simplified parametrization are compared with the results determined from observations. the results are generally encouraging. The simplified parametrization is further tested by incorporating it into a new ice‐cloud optical‐property parametrization scheme and performing radiative‐transfer calculations. the results show that this scheme in conjunction with the ice‐cloud optical‐properties scheme can generate a reasonably good estimate of cirrus‐cloud radiative properties compared with the observations.