Microwave Radiation from Mixed Phase Cloud and Parameter Retrievals
نویسنده
چکیده
The measurement of microwave radiation has been widely used in atmospheric remote sensing, such as temperature profiling, and vapor and liquid column measurements [1] [5]. The radiation from atmosphere is due to the absorption (emission) and scattering of electromagnetic (EM) wave by atmospheric particles (gaseous molecules, liquid water droplets and ice crystals). The absorption directly contributes to emission. The scattering due to larger particle affects the emitted radiation indirectly. The dependence of the measured radiation due to scattering and absorption is governed by radiation transfer (RT) equation. At microwave frequencies, liquid water particles and gaseous molecules mainly absorb EM wave and dominate the emission, while ice particles scatter EM wave. Therefore, the measured radiations depend on composition of cloud (liquid and ice) and mean particle size.
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