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Airborne Observation for Microphysical Structure of Precipitation System of Stratiform Cloud in Hebei Provice

Wenxia Yang, Shengjie Niu, Wei Jun-guo, Yuwen Sun

Open publisher page 2 citations

Abstract

Based on integrated analysis of the cloud data obtained by the particle measuring system(PMS)in 4 cases in Hebei Province, it is found that the stratiform clouds of precipitation in spring are inhomogeneous, in which there exist cloud bands of severe precipitation.The inversion is detected at twice about the height of 2000 m aircraft ascending and descending on 25 May 1991. There is a peak value of liquid water content(LWC) below the top of the inversion layer. The vertical distributions of the ice crystal size, ice water content(IWC), ice crystal concentration and LWC on 20 June 1992 are analysized. The seeding condition criteria and operation indexes in cold stratiform clouds presented by Tao Shuwang et al~(\) are used to judge the seedability in cloud of 2 cases. It is found that the seedable clouds are about 1/2 of total clouds, sometimes there are a large scale highly seedable clouds.

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What this paper is about

Based on integrated analysis of the cloud data obtained by the particle measuring system(PMS)in 4 cases in Hebei Province, it is found that the stratiform clouds of precipitation in spring are inhomogeneous, in which there exist cloud bands of severe precipitation.The inversion is detected at twice about the height of 2000 m aircraft ascending and descending on 25 May 1991. There is a peak value of liquid water content(LWC) below the top of the inversion layer. The vertical distributions of the ice crystal size, ice water content(IWC), ice crystal concentration and LWC on 20 June 1992 are analysized. The seeding condition criteria and operation indexes in cold stratiform clouds presented by Tao Shuwang et al~(\) are used to judge the seedability in cloud of 2 cases. It is found that the seedable clouds are about 1/2 of total clouds, sometimes there are a large scale highly seedable clouds.

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Available abstract

Based on integrated analysis of the cloud data obtained by the particle measuring system(PMS)in 4 cases in Hebei Province, it is found that the stratiform clouds of precipitation in spring are inhomogeneous, in which there exist cloud bands of severe precipitation.The inversion is detected at twice about the height of 2000 m aircraft ascending and descending on 25 May 1991. There is a peak value of liquid water content(LWC) below the top of the inversion layer. The vertical distributions of the ice crystal size, ice water content(IWC), ice crystal concentration and LWC on 20 June 1992 are analysized. The seeding condition criteria and operation indexes in cold stratiform clouds presented by Tao Shuwang et al~(\) are used to judge the seedability in cloud of 2 cases. It is found that the seedable clouds are about 1/2 of total clouds, sometimes there are a large scale highly seedable clouds.

Key concepts: Precipitation, Environmental science, Atmospheric sciences, Seeding, Inversion (geology), Liquid water content, Ice crystals, Cloud computing

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