气候变化领域集成服务门户(CCPortal): Increase of precipitation by cloud seeding observed from a case study in November 2020 over Shijiazhuang, China

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DOI	10.1016/j.atmosres.2021.105766
	Increase of precipitation by cloud seeding observed from a case study in November 2020 over Shijiazhuang, China
	Dong X.; Zhao C.; Huang Z.; Mai R.; Lv F.; Xue X.; Zhang X.; Hou S.; Yang Y.; Yang Y.; Sun Y.
发表日期	2021
ISSN	0169-8095
卷号	262
英文摘要	Human weather modification is a method to influence cloud developing process so that the precipitation becomes more beneficial to local human society. A long existing challenging issue is the quantification of the efficiency of cloud seeding. This study investigates the changes of cloud and precipitation properties after cloud seeding by using the observations from a comprehensive experiment carried out over Shijiazhuang, China on November 21, 2020. The precipitation events before the cloud seeding experiment make the atmospheric background with sufficient water vapor. Comparison of the cloud and precipitation properties between before and after the cloud seeding shows distinct changes in both cloud and precipitation properties based on observations from ground sites, aircraft, and satellite. The aircraft observations show that the cloud droplet number concentration and liquid water content decreased significantly, and the ice particle concentration and precipitation particle concentration increased significantly, after cloud seeding. The satellite remote sensing observations show a semi-circle with decreased cloud reflection in visible channel after cloud seeding. The ground weather radar shows increased radar reflectivity echos for clouds impacted by seeding, indicating the formation of precipitation. After cloud seeding, there are also two short-term precipitation events occurring in the periods of 04:54–04:56 and 05:26–05:34 UTC over ZhaoXian, and 05:05–05:14 and 06:13–06:22 UTC over NingJin on November 21, 2020, with total precipitation amount of 0.04 mm and 0.042 mm, respectively. All the research findings show robust evidences of conversion from liquid droplets to ice particles and increased precipitation by the cloud seeding during this experiment. © 2021 Elsevier B.V.
英文关键词	Cloud seeding; Ice particles; Precipitation; Supercooled clouds
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236633
作者单位	Key Laboratory of Meteorology and Ecological Environment of Hebei Province, Shijiazhuang, Hebei province, China; Hebei Provincial Weather Modification Office, Shijiazhuang, Hebei Province, China; College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
推荐引用方式 GB/T 7714	Dong X.,Zhao C.,Huang Z.,et al. Increase of precipitation by cloud seeding observed from a case study in November 2020 over Shijiazhuang, China[J],2021,262.
APA	Dong X..,Zhao C..,Huang Z..,Mai R..,Lv F..,...&Sun Y..(2021).Increase of precipitation by cloud seeding observed from a case study in November 2020 over Shijiazhuang, China.Atmospheric Research,262.
MLA	Dong X.,et al."Increase of precipitation by cloud seeding observed from a case study in November 2020 over Shijiazhuang, China".Atmospheric Research 262(2021).