DOI: 10.1002/2015JD023375
论文题名: Particle size distribution properties in mixed-phase monsoon clouds from in situ measurements during CAIPEEX
作者: Patade S. ; Prabha T.V. ; Axisa D. ; Gayatri K. ; Heymsfield A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2015
卷: 120, 期: 19 起始页码: 10418
结束页码: 10440
语种: 英语
英文关键词: cloud microphysics
; ice particle size distribution
; monsoon clouds
Scopus关键词: aerosol
; atmospheric convection
; cloud cover
; cloud droplet
; cloud microphysics
; in situ measurement
; instrumentation
; monsoon
; particle size
; size distribution
; temperature gradient
; water content
英文摘要: A comprehensive analysis of particle size distributions measured in situ with airborne instrumentation during the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) is presented. In situ airborne observations in the developing stage of continental convective clouds during premonsoon (PRE), transition, and monsoon (MON) period at temperatures from 25 to -22'C are used in the study. The PRE clouds have narrow drop size and particle size distributions compared to monsoon clouds and showed less development of size spectra with decrease in temperature. Overall, the PRE cases had much lower values of particle number concentrations and ice water content compared to MON cases, indicating large differences in the ice initiation and growth processes between these cloud regimes. This study provided compelling evidence that in addition to dynamics, aerosol and moisture are important for modulating ice microphysical processes in PRE and MON clouds through impacts on cloud drop size distribution. Significant differences are observed in the relationship of the slope and intercept parameters of the fitted particle size distributions (PSDs) with temperature in PRE and MON clouds. The intercept values are higher in MON clouds than PRE for exponential distribution which can be attributed to higher cloud particle number concentrations and ice water content in MON clouds. The PRE clouds tend to have larger values of dispersion of gamma size distributions than MON clouds, signifying narrower spectra. The relationships between PSDs parameters are presented and compared with previous observations. ©2015. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63002
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Indian Institute of Tropical Meteorology, Pune, India; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Patade S.,Prabha T.V.,Axisa D.,et al. Particle size distribution properties in mixed-phase monsoon clouds from in situ measurements during CAIPEEX[J]. Journal of Geophysical Research: Atmospheres,2015-01-01,120(19)