Effect of the melting layer on the microwave emission of clouds over the ocean

被引：0

作者：

German Aerospace Center, German Remote Sensing Data Center, Cologne, Germany ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

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来源：

J Atmos Sci | / 6卷 / 852-867期

关键词：

Algorithms - Atmospheric optics - Atmospheric radiation - Ice - Light extinction - Light scattering - Mathematical models - Melting - Microwaves - Particles (particulate matter) - Permittivity - Water;

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摘要：

The effect of melting particle on simulated brightness temperatures at microwave frequencies was investigated for precipitation over the ocean. The meteorological model framework is based on the assumption that the strongest radiometric effect is due to the drastically increased permittivity of melting particles driven by volume fraction of liquid water. Radiative transfer calculations reveal average deviations of 20-30 K at low frequencies, mainly due to the strong dependence of the extinction coefficient on the implemented melting process. However, for particles composed of water matrix and air-ice inclusions independently of melting stage, the emission excess seems to be overexpressed.

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