globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027900
Scopus记录号: 2-s2.0-85045315248
论文题名:
Characteristic Vertical Profiles of Cloud Water Composition in Marine Stratocumulus Clouds and Relationships With Precipitation
作者: MacDonald A.B.; Dadashazar H.; Chuang P.Y.; Crosbie E.; Wang H.; Wang Z.; Jonsson H.H.; Flagan R.C.; Seinfeld J.H.; Sorooshian A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:7
起始页码: 3704
结束页码: 3723
语种: 英语
英文关键词: aerosol ; cloud water ; rainout ; scavenging ; sea salt ; stratocumulus
Scopus关键词: aerosol ; precipitation (climatology) ; rainfall ; relative humidity ; saturation ; scavenging (chemistry) ; sea salt ; stratocumulus ; vertical profile ; water content
英文摘要: This study uses airborne cloud water composition measurements to characterize the vertical structure of air-equivalent mass concentrations of water-soluble species in marine stratocumulus clouds off the California coast. A total of 385 cloud water samples were collected in the months of July and August between 2011 and 2016 and analyzed for water-soluble ionic and elemental composition. Three characteristic profiles emerge: (i) a reduction of concentration with in-cloud altitude for particulate species directly emitted from sources below cloud without in-cloud sources (e.g., Cl− and Na+), (ii) an increase of concentration with in-cloud altitude (e.g., NO2 − and formate), and (iii) species exhibiting a peak in concentration in the middle of cloud (e.g., non–sea-salt SO4 2−, NO3 −, and organic acids). Vertical profiles of rainout parameters such as loss frequency, lifetime, and change in concentration with respect to time show that the scavenging efficiency throughout the cloud depth depends strongly on the thickness of the cloud. Thin clouds exhibit a greater scavenging loss frequency at cloud top, while thick clouds have a greater scavenging loss frequency at cloud base. The implications of these results for treatment of wet scavenging in models are discussed. ©2018. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:26   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114082
Appears in Collections:气候减缓与适应

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作者单位: Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ, United States; Earth and Planetary Sciences, University of California, Santa Cruz, CA, United States; Science Systems and Applications, Inc., Hampton, VA, United States; NASA Langley Research Center, Hampton, VA, United States; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Department of Meteorology, Naval Postgraduate School, Monterey, CA, United States; Department of Chemical Engineering, California Institute of Technology, Pasadena, CA, United States; Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, United States

Recommended Citation:
MacDonald A.B.,Dadashazar H.,Chuang P.Y.,et al. Characteristic Vertical Profiles of Cloud Water Composition in Marine Stratocumulus Clouds and Relationships With Precipitation[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(7)
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