ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Relationship of CloudTop Heights Retrieved from Combination of FY-2C/D Geostationary Satellite Data and Other Observation Data and RadarRetrieved Echo Tops
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Abstract:
A relationship between cloudtop heights retrieved from combination of FY-2C/D geostationary satellite data and other observation data and radarderived echotops is investigated. Tens of thousands of samples from 20 precipitation cases caused by cumuliformstratiformmixed and stratiform clouds are evaluated. It shows that there is remarkably a positive correlation relationship between satellitederived cloudtopheight and radar echotop. It is likely that the relationship is hardly dependent upon combined reflectivity factor. Cloudtop heights mainly derived by FY-2 are more consistent with echo tops of less than 18 dBz reflectivity factor, compared with those of 18 dBz reflectivity factor because FY2 satellites and SAtyperadars have different observational and retrieval principles. Satellitederived cloudtopheight represents radiation characteristics of cloud droplets in the top of cumuliformstratiformmixed and stratiform clouds, and meanwhile radarretrieved echotop implies ability that larger precipitation particles attenuate electromagnetic waves of radars.
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