ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Archive > Volume 36 Issue 11 > 2010,36(11):59-67. DOI:10.7519/j.issn.1000-0526.2010.11.009 Prev Next
Analysis on Conditions of Precipitation Enhancement Catalyzing Operation Based on Mesoscale Model, CINRAD, and Satellite
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Abstract:
The artificial precipitation condition of a case during November 15-16, 2006 in Anhui Province is studied based on the mesoscale model data, CINRAD data, geostationary meteorological satellites data, etc. First, the model results are validated by observed data, such as rainfall, the characteristics of cloud system’s radar echo, and the moving trend. The analysis on the structure of the cloud and precipitation shows that the existence of supercooled cloud water with updraft is favorable for artificial precipitation operation. Then, an index for artificial precipitation condition is calculated based on the model results, which actually include the ice supersaturation, K index, divergence difference, and the 850 hPa specific humidity. All these indexes are contrasted between the cloud structure, rainfall, and other observed data such as radar, satellite, the results show that these indexes illuminate the favorable dynamic, thermodynamic, and microphysical conditions in cloud system, which could be a precursor to the cloud system’s moving and developing, and also these indexes fit with the observed data well. At last, the characteristics of satellite retrival data, radar echo, and radar retrieval data such as ET (echo top), VIL (vertical integrated liquid), are in accord with the model’s results, so the accurate position and time for artificial precipitation could be given. This is how the model results are used with observed data in this case for artificial precipitation.
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