基于CloudSat資料對中國低緯度陸地區(qū)域卷云物理特征的研究

doi:10.12306/2021jms.0023

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基于CloudSat資料對中國低緯度陸地區(qū)域卷云物理特征的研究
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                        10.12306/2021jms.0023
                    
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中圖分類號:P426.5;P412.27
基金項目:浙江省氣象局青年基金資助項目(2019QN21;2020QN34;2021QN43);浙江省預(yù)報員專項(2019YBY12)

Characteristics of clouds properties in cirrus clouds in low latitude land areas of China with the CloudSat data

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利用2008年9月—2016年8月的CloudSat衛(wèi)星資料對發(fā)生在我國低緯度陸地區(qū)域(5°~36.5°N,78°~124°E)的卷云物理特征進行統(tǒng)計分析,并分別討論東部沿海、中部、西部3個子區(qū)域的卷云物理特征的季節(jié)變化。結(jié)果表明:卷云的整層發(fā)生率西部地區(qū)整體低于中部與東部沿海地區(qū)。3個子區(qū)域整層發(fā)生率均在夏季最高、冬季最低。卷云的主要發(fā)生高度在5.04~18.71 km,垂直分布中卷云發(fā)生率的最大值出現(xiàn)在春季中部地區(qū),為15.34%,高度為9.83 km。冰水路徑最大值出現(xiàn)在夏季的東部沿海,液水路徑最大值在秋季的西部地區(qū)。冰水含量、冰粒數(shù)濃度、冰粒有效半徑的主要分布高度與卷云的發(fā)生高度一致,液水含量、液滴數(shù)濃度、液滴有效半徑的主要分布高度在5.04~9.35 km。3個子區(qū)域卷云冰水含量、冰粒數(shù)濃度、冰粒有效半徑垂直分布中大多集中在中上部;液水含量垂直分布主要集中在分布高度的中下部。四季卷云雷達(dá)反射率因子的最大值在-19.89~-16.78 dBZ,分布高度在7.19~10.55 km。

Abstract:

By using the CloudSat satellite data from September 2008 to August 2016, the physical characteristics of cirrus clouds occurring in China's low latitude regions (5°-36.5°N,78°-124°E) were statistically analyzed and the physical characteristics of cirrus clouds in the eastern coastal, central and western sub-regions change in the four seasons were discussed. Results show that the probabilities in cirrus clouds at total altitudes in the western region is lower than in the central and eastern coastal regions. The probabilities in cirrus clouds at total altitudes of the three sub-regions was highest in summer and lowest in winter. The main occurrence height of cirrus clouds is between 5.08 km and 18.71 km. The maximum occurrence rate of cirrus clouds in the vertical distribution occurs in the central part of summer, which is 15.34%, and the height is 9.83 km. The maximum value of ice water path occurs in the eastern coast in summer, and the maximum value of liquid water path occurs in the western region in spring. The main distribution heights of ice water content, ice particle concentration and ice particle effective radius are consistent with the occurrence height of cirrus cloud, and the main distribution heights of liquid water content, droplet concentration and droplet effective radius are 5.08-9.35 km. In the three sub-regions, the vertical distribution of cirrus cloud ice water content, ice particle concentration, and ice particle effective radius are mostly concentrated in the middle and upper part; the vertical distribution of liquid water content is mainly concentrated in the middle and lower part of the distribution height. The maximum reflectivity factor of the four seasons cirrus cloud radar is -19.89- -16.78 dBZ, and the distribution height is 7.19-10.55 km.

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鄭倩,孫杭媛,潘欣,顧振海,黃億,葉飛.基于CloudSat資料對中國低緯度陸地區(qū)域卷云物理特征的研究.氣象科學(xué),2022,42(3):390-401 ZHENG Qian, SUN Hangyuan, PAN Xin, GU Zhenhai, HUANG Yi, YE Fei. Characteristics of clouds properties in cirrus clouds in low latitude land areas of China with the CloudSat data. Journal of the Meteorological Sciences,2022,42(3):390-401

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收稿日期:2020-10-09
最后修改日期:2021-01-13
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在線發(fā)布日期: 2022-07-15
出版日期: 2022-06-25

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