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DOI	10.1016/j.atmosres.2019.104648
	Impact of secondary droplet activation on the contrasting cloud microphysical relationships during the wet and dry seasons in the Amazon
	Yeom J.M.; Yum S.S.; Mei F.; Schmid B.; Comstock J.; Machado L.A.T.; Cecchini M.A.
发表日期	2019
ISSN	0169-8095
卷号	230
英文摘要	Cloud microphysical data obtained from aircraft measurements during the GoAmazon2014/5 campaign were analyzed to examine the differences in cloud microphysical properties and relationships between the wet and dry seasons and their implications on cloud microphysical processes. Basically, the distinct differences in cloud microphysical properties between the wet and dry seasons were considered to be due to higher concentration of aerosols and their larger sizes in the dry season, leading to higher droplet concentration. Analyses of cloud microphysical relationships and mixing diagrams strongly suggest homogeneous mixing for most cloud segments in both the wet and dry seasons: diluted cloud parcels with smaller liquid water content (L) and lower droplet concentration (N) generally had smaller mean volume of cloud droplets (V). However, in the dry season some cloud segments included cloud parcels that had high N of small cloud droplets, which led to a low correlation between N and V and also between N and L. These features are speculated to be due to secondary activation of cloud droplets from the cloud condensation nuclei in the entrained air, which seemed more likely to occur in the dry season due to more favorable conditions for such a process, including larger sizes of entrained aerosols, higher fluctuation of vertical velocity and lager turbulent dissipation rate. © 2019
英文关键词	Aircraft measurement; Cloud microphysics; Entrainment; Mixing process; Secondary activation
语种	英语
scopus关键词	Aerosols; Air; Air entrainment; Aircraft; Chemical activation; Drops; Mixing; Aircraft measurement; Cloud condensation nuclei; Cloud microphysical process; Cloud microphysical properties; Cloud microphysics; Mixing process; Secondary activations; Turbulent dissipation rates; Drought; aerosol; airborne survey; cloud droplet; cloud microphysics; dry season; entrainment; mixing; wet season; Amazonia
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/162316
作者单位	Department of Atmospheric Sciences, Yonsei University, South Korea; Pacific Northwest National Laboratory, United States; Center for Weather and Climate Research, National Institute for Space Research, Brazil; Department of Atmospheric Science, University of São Paulo, Brazil
推荐引用方式 GB/T 7714	Yeom J.M.,Yum S.S.,Mei F.,et al. Impact of secondary droplet activation on the contrasting cloud microphysical relationships during the wet and dry seasons in the Amazon[J],2019,230.
APA	Yeom J.M..,Yum S.S..,Mei F..,Schmid B..,Comstock J..,...&Cecchini M.A..(2019).Impact of secondary droplet activation on the contrasting cloud microphysical relationships during the wet and dry seasons in the Amazon.Atmospheric Research,230.
MLA	Yeom J.M.,et al."Impact of secondary droplet activation on the contrasting cloud microphysical relationships during the wet and dry seasons in the Amazon".Atmospheric Research 230(2019).