DOI: 10.1002/2016GL067683
论文题名: New understanding and quantification of the regime dependence of aerosol-cloud interaction for studying aerosol indirect effects
作者: Chen J. ; Liu Y. ; Zhang M. ; Peng Y.
刊名: Geophysical Research Letters
ISSN: 0094-9345
EISSN: 1944-9076
出版年: 2016
卷: 43, 期: 4 起始页码: 1780
结束页码: 1787
语种: 英语
英文关键词: aerosol-cloud interactions
Scopus关键词: Atmospheric movements
; Climate models
; Dispersions
; Drops
; Aerosol indirect effect
; Aerosol-cloud interaction
; Dispersion effect
; Nonmonotonic behaviors
; Number concentration
; Relative dispersion
; Standard deviation
; Transitional regimes
; Aerosols
; aerosol
; climate modeling
; cloud cover
; cloud droplet
; concentration (composition)
; dispersion
; quantitative analysis
; spectral analysis
; uncertainty analysis
; updraft
英文摘要: Aerosol indirect effects suffer from large uncertainty in climate models and among observations. This study focuses on two plausible factors: regime dependence of aerosol-cloud interactions and the effect of cloud droplet spectral shape. We show, using a new parcel model, that combined consideration of droplet number concentration (Nc) and relative dispersion (ε, ratio of standard deviation to mean radius of the cloud droplet size distribution) better characterizes the regime dependence of aerosol-cloud interactions than considering Nc alone. Given updraft velocity (w), ε increases with increasing aerosol number concentration (Na) in the aerosol-limited regime, peaks in the transitional regime, and decreases with further increasing Na in the updraft-limited regime. This new finding further reconciles contrasting observations in literature and reinforces the compensating role of dispersion effect. The nonmonotonic behavior of ε further quantifies the relationship between the transitional Na and w that separates the aerosol- and updraft-limited regimes. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977829941&doi=10.1002%2f2016GL067683&partnerID=40&md5=ab902e1fac84fff7ef2f1ffe5f6573c3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10308
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: School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States
Recommended Citation:
Chen J.,Liu Y.,Zhang M.,et al. New understanding and quantification of the regime dependence of aerosol-cloud interaction for studying aerosol indirect effects[J]. Geophysical Research Letters,2016-01-01,43(4).