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Microphysical characteristics of precipitating cumulus cloud based on airborne ka-band cloud radar and droplet measurements

引用

Atmospheric and Oceanic Science Letters 2022年第2期15卷 65-70页

作者： Lei Wei Mengyu Huang Rong Zhang Yuhuan Lü Tuanjie Hou Hengchi Lei Delong Zhao Wei Zhou Yuan Fu Beijing Weather Modification Center BeijingChina Key Laboratory for cloud Physics of China Meteorological Administration BeijingChina Wuqing Meteorological Observatory of Tianjin TianjinChina Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Zhejiang Meteorological Observatory HangzhouChina Beijing Key Laboratory of cloud Precipitation and Atmospheric Water ResourcesBeijingChina Beijing Meteorological Bureau BeijingChina

Based on cloud-probe data and airborne ka-band cloud radar data collected in Baoding on 5 August 2018,the microphysical structural characteristics of cumulus(Cu)cloud at the precipitation stage were *** cloud droplets in the Cu cloud were found to be significantly larger than those in stratiform(STF)*** the Cu cloud,most cloud particles were between 7 and 10μm in diameter,while in the STF cloud the majority of cloud particles grew no larger than 2μ*** sensitivity of cloud properties to aerosols varied with *** cloud droplet effective radius showed a negative relationship with the aerosol number concentration(Na)in the cloud planetary boundary layer(PBL)and upper layer above the ***,the cloud droplet concentration(Nc)varied little with decreased Na in the high liquid water content region above 1500 *** Na values of between 300 and 1853 cm-3 were found in the PBL,and the maximum Na was sampled near the surface in August in the Hebei region,which was lower than that in autumn and *** radar reflectivity corresponded to large FCDP(fast cloud droplet probe)particle concentrations and small aerosol particle concentrations,and vice versa for low radar *** updrafts in the Cu cloud increased the peak radius and Nc,and broadened cloud droplet spectrum;lower air temperature was favorable for particle condensational growth and produced larger droplets.

关键词： Airplane observation Microphysical processes ka-band cloud radar Cumulus

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