DOI: 10.1002/2016GL069328
论文题名: Experimental evidence supporting the insensitivity of cloud droplet formation to the mass accommodation coefficient for condensation of water vapor to liquid water
作者: Langridge J.M. ; Richardson M.S. ; Lack D.A. ; Murphy D.M.
刊名: Geophysical Research Letters
ISSN: 0094-9574
EISSN: 1944-9305
出版年: 2016
卷: 43, 期: 12 起始页码: 6650
结束页码: 6656
语种: 英语
英文关键词: aerosol activation and growth
; mass accommodation coefficient
; warm cloud formation
; water uptake kinetics
Scopus关键词: Aerosols
; Atmospheric humidity
; Chemical activation
; Drops
; Growth kinetics
; Mass transfer
; Absorbing aerosol
; Cloud formation
; Coupled heat and mass transfer
; Experimental evidence
; Kinetic limitations
; Mass accommodation coefficient
; Photoacoustic measurements
; Water uptake
; Water vapor
英文摘要: The mass accommodation coefficient for uptake of water vapor to liquid water, αM, has been constrained using photoacoustic measurements of aqueous absorbing aerosol. Measurements performed over a range of relative humidities and pressures were compared to detailed model calculations treating coupled heat and mass transfer occurring during photoacoustic laser heating cycles. The strengths and weaknesses of this technique are very different to those for droplet growth/evaporation experiments that have typically been applied to these measurements, making this a useful complement to existing studies. Our measurements provide robust evidence that αM is greater than 0.1 for all humidities tested and greater than 0.3 for data obtained at relative humidities greater than 88% where the aerosol surface was most like pure water. These values of αM are above the threshold at which kinetic limitations are expected to impact the activation and growth of aerosol particles in warm cloud formation. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977097991&doi=10.1002%2f2016GL069328&partnerID=40&md5=09172930d2ece2ef5565ee3db1945b19
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10537
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: Observation Based Research, Met Office, Exeter, United Kingdom
Recommended Citation:
Langridge J.M.,Richardson M.S.,Lack D.A.,et al. Experimental evidence supporting the insensitivity of cloud droplet formation to the mass accommodation coefficient for condensation of water vapor to liquid water[J]. Geophysical Research Letters,2016-01-01,43(12).