气候变化领域集成服务门户(CCPortal): Dispersion of Droplet Size Distributions in Supercooled Non-precipitating Stratocumulus from Aircraft Observations Obtained during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study

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DOI	10.1029/2020JD033720
	Dispersion of Droplet Size Distributions in Supercooled Non-precipitating Stratocumulus from Aircraft Observations Obtained during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study
	Wang Y.; Zhao C.; McFarquhar G.M.; Wu W.; Reeves M.; Li J.
发表日期	2021
ISSN	2169897X
卷号	126 期号:6
英文摘要	The characteristics of cloud droplet size distributions and statistical relations of the relative dispersion (ε) with the vertical velocity (w) and with the interstitial aerosol concentration (Nia) are investigated for ubiquitous supercooled shallow stratocumulus observed over the Southern Ocean (SO) using aircraft measurements obtained during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study. Distinct vertical variations have been found using 36 non-precipitating cloud profiles. The cloud droplet effective radius (re) increases nearly monotonically from 5.3 ± 1.9 μm at cloud base to 9.4 ± 2.2 μm at cloud top. The ε decreases rapidly from cloud base (0.42 ± 0.13) and then remains relatively constant in the upper cloud layer (0.27 ± 0.09). This study also shows robust dependence of ε on both Nia and w. The ε increases (decreases) with increasing Nia (w) at a 95% confidence level when values of w (low Nia) are restricted to a small range. The important roles of aerosols and dynamics on ε are demonstrated and are crucial to estimating aerosol indirect radiative forcing, especially for pristine SO regions where models almost universally underestimate reflected radiation. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol concentration; dispersion; droplet size distribution; Southern Ocean; vertical velocity
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185383
作者单位	College of Atmospheric Sciences, Lanzhou University, Lanzhou, China; College of Global Change and Earth System Science, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; Cooperative Institute for Mesoscale Meteorological Studies, University of Oklahoma, Norman, OK, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States; National Center for Atmospheric Research, Boulder, CO, United States
推荐引用方式 GB/T 7714	Wang Y.,Zhao C.,McFarquhar G.M.,et al. Dispersion of Droplet Size Distributions in Supercooled Non-precipitating Stratocumulus from Aircraft Observations Obtained during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study[J],2021,126(6).
APA	Wang Y.,Zhao C.,McFarquhar G.M.,Wu W.,Reeves M.,&Li J..(2021).Dispersion of Droplet Size Distributions in Supercooled Non-precipitating Stratocumulus from Aircraft Observations Obtained during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study.Journal of Geophysical Research: Atmospheres,126(6).
MLA	Wang Y.,et al."Dispersion of Droplet Size Distributions in Supercooled Non-precipitating Stratocumulus from Aircraft Observations Obtained during the Southern Ocean Cloud Radiation Aerosol Transport Experimental Study".Journal of Geophysical Research: Atmospheres 126.6(2021).