DOI: 10.1002/2015GL066873
论文题名: Aerosol effects on cloud cover as evidenced by ground-based and space-based observations at five rural sites in the United States
作者: Ten Hoeve J.E. ; Augustine J.A.
刊名: Geophysical Research Letters
ISSN: 0094-9445
EISSN: 1944-9176
出版年: 2016
卷: 43, 期: 2 起始页码: 793
结束页码: 801
语种: 英语
英文关键词: aerosols
; clouds
; indirect effects
; MODIS
; radiative forcing
; SURFRAD
Scopus关键词: Atmospheric aerosols
; Atmospheric radiation
; Clouds
; Contamination
; Aerosol optical depths
; Cloud contamination
; Indirect effects
; MODIS
; Radiative forcings
; Satellite based observations
; Space-based observations
; SURFRAD
; Aerosols
; aerosol
; aerosol property
; cloud cover
; MODIS
; optical depth
; quantitative analysis
; radiation budget
; radiative forcing
; rural area
; United States
英文摘要: Previous studies of the second aerosol indirect (lifetime) effect on cloud cover have estimated the strength of the effect without correcting for near-cloud contamination and other confounding factors. Here we combine satellite-based observations with a multiyear ground-based data set across five rural locations in the United States to more accurately constrain the second indirect aerosol effect and quantify aerosol effects on radiative forcing. Results show that near-cloud contamination accounts for approximately 40% of the satellite-derived aerosol-cloud relationship. When contamination is removed and the effect of meteorological covariation is minimized, a strong physical aerosol effect on cloud cover remains. Averaged over all stations and after correcting for contamination, the daytime solar and total (solar + IR) radiative forcing is -52 W/m2 and -19 W/m2, respectively, due to both direct and indirect aerosol effects for aerosol optical depths (τ) between 0 and 0.3. Averaged diurnally, the average total radiative forcing is +16 W/m2. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84961285615&doi=10.1002%2f2015GL066873&partnerID=40&md5=d37b33511ba90040fd16d96a86459d88
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10408
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: National Weather Service, Silver Spring, MD, United States
Recommended Citation:
Ten Hoeve J.E.,Augustine J.A.. Aerosol effects on cloud cover as evidenced by ground-based and space-based observations at five rural sites in the United States[J]. Geophysical Research Letters,2016-01-01,43(2).