DOI: 10.1002/2017JD027431
Scopus记录号: 2-s2.0-85040238032
论文题名: Height Dependency of Aerosol-Cloud Interaction Regimes
作者: Chen J. ; Liu Y. ; Zhang M. ; Peng Y.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 1 起始页码: 491
结束页码: 506
语种: 英语
英文关键词: aerosol-cloud interactions
; cloud droplet size distribution
; cloud microphysics
; warm rain initiation
Scopus关键词: aerosol
; cloud droplet
; cloud microphysics
; concentration (composition)
; condensation
; height
; rainfall
; size distribution
; supersaturation
; updraft
; velocity profile
英文摘要: This study investigates the height dependency of aerosol-cloud interaction regimes in terms of the joint dependence of the key cloud microphysical properties (e.g., cloud droplet number concentration and cloud droplet relative dispersion) on aerosol number concentration (Na) and vertical velocity (w). The three distinct regimes with different microphysical features are the aerosol-limited regime, the updraft-limited regime, and the transitional regime. The results reveal two new phenomena in updraft-limited regime: (1) the “condensational broadening” of cloud droplet size distribution in contrast to the well-known “condensational narrowing” in the aerosol-limited regime and (2) above the level of maximum supersaturation; some cloud droplets are deactivated into interstitial aerosols in the updraft-limited regime, whereas all droplets remain activated in the aerosol-limited regime. Further analysis shows that the particle equilibrium supersaturation plays important role in understanding these unique features. Also examined is the height of warm rain initiation and its dependence on Na and w. The rain initiation height is found to depend primarily on either Na or w or both in different Na-w regimes, suggesting a strong regime dependence of the second aerosol indirect effect. ©2017. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114705
Appears in Collections: 气候减缓与适应
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作者单位: School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, United States; Brookhaven National Laboratory, Upton, NY, United States; ICCES/Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Ministry of Education Key Laboratory for Earth System Modeling and Department of Earth System Science, Tsinghua University, Beijing, China
Recommended Citation:
Chen J.,Liu Y.,Zhang M.,et al. Height Dependency of Aerosol-Cloud Interaction Regimes[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(1)