A statistical comparison of calculated brightness temperatures withaircraft-based observations from 10 to 325 GHz

摘要

An appropriate level of detail in the microphysicalnparameterization of clouds and rain cells is essential to thendevelopment of realistic atmospheric forward radiative transfer models.nToo much detail can inflate computation time and complexity bynsupporting meaningless degrees of freedom, while too little detail cannresult in an inadequate model. The particle phase, size distribution,naggregate density, shape, and dielectric constant govern the absorptionnand scattering properties of a hydrometeor-laden atmosphere. In order tonevaluate hydrometeor parameterizations for wideband (10-325 GHz) RTnmodelling a statistical comparison was performed between brightnessntemperatures observed over a mature oceanic convective storm and thosencalculated for a similar storm using two- and five-phase hydrometeornparameterizations in a planar-stratified RT model. While generalnagreement is obtained, the comparisons suggest that neither thentwo-phase nor five-phase model is entirely satisfactory for widebandnbrightness temperature simulations