气候变化领域集成服务门户(CCPortal): Aerosol Indirect Effects on Cirrus Clouds Based on Global Aircraft Observations

CCPortal

DOI	10.1029/2019GL086550
	Aerosol Indirect Effects on Cirrus Clouds Based on Global Aircraft Observations
	Patnaude R.; Diao M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:10
英文摘要	Cirrus clouds have large climate impacts, yet aerosol indirect effects on cirrus microphysical properties remain highly uncertain. There is a lack of observational analysis on thermodynamic, dynamical, and aerosol indirect effects simultaneously, which limits the quantification of each effect. Using seven National Science Foundation aircraft campaigns, impacts of temperature, relative humidity, vertical velocity, and aerosols are individually quantified. Nonmonotonic correlations of ice water content, ice crystal number concentration (Ni), and mean diameter (Di) with respect to aerosol number concentrations (Na) are consistently seen at various conditions. Positive correlations become significant when Na > 500 nm (Na500) and >100 nm (Na100) are 3 and 10 times higher than average, respectively. While Na500 are more effective at temperatures closer to −40 °C with small vertical velocity fluctuations and are less sensitive to ice supersaturation, Na100 are more effective at colder temperatures with higher updraft and higher ice supersaturation, indicating heterogeneous and homogeneous nucleation mechanisms, respectively. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Aircraft; Clouds; Nucleation; Supersaturation; Temperature; Velocity; Aerosol indirect effect; Aircraft observations; Cirrus microphysical properties; Homogeneous nucleation; National Science Foundations; Number concentration; Observational analysis; Positive correlations; Ice; aerosol; airborne survey; cirrus; cloud microphysics; ice crystal; nucleation; observational method
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170343
作者单位	Department of Meteorology and Climate Science, San Jose State University, San Jose, CA, United States
推荐引用方式 GB/T 7714	Patnaude R.,Diao M.. Aerosol Indirect Effects on Cirrus Clouds Based on Global Aircraft Observations[J],2020,47(10).
APA	Patnaude R.,&Diao M..(2020).Aerosol Indirect Effects on Cirrus Clouds Based on Global Aircraft Observations.Geophysical Research Letters,47(10).
MLA	Patnaude R.,et al."Aerosol Indirect Effects on Cirrus Clouds Based on Global Aircraft Observations".Geophysical Research Letters 47.10(2020).