ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Studies on the Microphysical Characteristics of a Stratiform Cloud and Its Response to Aircraft Cloud Seeding
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Abstract:
Based on the PMS data of an aircraft cloud seeding in stratiform cloud in Henan Province on March 21, 2005, the differences of macro and microphysical character istics between seeded and unseeded clouds are analyzed. The results indicate tha t the maximum concentration of small cloud particles is 1.36×108m-3 at the height of 4200m before seeding, and the corresponding mean diameter is abo ut 5μm. The concentration and liquid water content of small cloud particles de crease after seeding, and their change below the seeding layer is more obvious t han that at the seeding layer. The mean diameter of small cloud particles increases from 17.32μm to 18.07μm at 5000m height. The change of microphysical quantity after seeding is caused by cloud seeding. There are similar cloud particle spectra at different heights.
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