Analysis of cloud macro characteristics based on groundbased cloud radar data
Yang Chao1, 2, Yao Zhigang2, Zhao Zengliang2
1.Institute of Meteorology and Ocean, PLA University of Science and Technology, Nanjing 211101; 2.Beijing Institute of Applied Meteorology, Beijing 100029
Abstract：By means of observation data detected by atmospheric radiation measurement mobile facility called groundbased cloud radar of the U.S.department of energy (DOE) in Shouxian county in the east of China from October 15 to December 15, 2008, the occurrence frequency and macroproperty of the cloud are analyzed.The results show that the maximum of cloud occurrence frequency is near the ground at 0609 UTC (14-17 GMT) in Shouxian area in late autumn and early winter, and it also occurs near the height of 8 km at 04 UTC and 23 UTC.Moreover, the maximum of cloud occurrence frequency corresponds to the minimum of the average reflectivity factor.The frequency of cloud layers is in the majority with single cloud, accounting for 62.9% of all clouds, and double clouds account for 29.8%, which also exists a small amount of multilayer clouds.The frequency of cloud types is given priority to cirrus, altostratus and stratocumulus, accounting for 30.9%, 26.5% and 22.2% respectively.
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2014, Vol. 31 
