GSTDTAP  > 气候变化
DOI10.1002/2017JD026641
Influences of drizzle on stratocumulus cloudiness and organization
Zhou, Xiaoli1; Heus, Thijs2; Kollias, Pavlos3,4
2017-07-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2017
卷号122期号:13
文章类型Article
语种英语
国家Canada; USA
英文摘要

Large-eddy simulations are used to study the influence of drizzle on stratocumulus organization, based on measurements made as part of the Second Dynamics and Chemistry of the Marine Stratocumulus field study-II. Cloud droplet number concentration (Nc) is prescribed and considered as the proxy for different aerosol loadings. Our study shows that the amount of cloudiness does not decrease linearly with precipitation rate. An Nc threshold is observed below which the removal of cloud water via precipitation efficiently reduces cloud depth, allowing evaporation to become efficient and quickly remove the remaining thin clouds, facilitating a fast transition from closed cells to open cells. Using Fourier analysis, stratocumulus length scales are found to increase with drizzle rates. Raindrop evaporation below 300 m lowers the cloud bases and amplifies moisture variances in the subcloud layer, while it does not alter the horizontal scales in the cloud layer, suggesting that moist cold pool dynamic forcings are not essential for mesoscale organization of stratocumulus. The cloud scales are greatly increased when the boundary layer is too deep to maintain well mixed.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000407900300018
WOS关键词MARINE BOUNDARY-LAYER ; LARGE-EDDY SIMULATIONS ; MESOSCALE CELLULAR CONVECTION ; SOUTHEAST PACIFIC STRATOCUMULUS ; OPEN CELLS ; STRATIFORM CLOUDS ; VOCALS-REX ; PART 1 ; PRECIPITATION ; AEROSOL
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/33318
专题气候变化
作者单位1.McGill Univ, Dept Atmospher & Ocean Sci, Montreal, PQ, Canada;
2.Cleveland State Univ, Dept Phys, Cleveland, OH 44115 USA;
3.SUNY Stony Brook, Sch Marine & Atmospher Sci, Stony Brook, NY 11794 USA;
4.Brookhaven Natl Lab, Dept Environm & Climate Sci, Upton, NY 11973 USA
推荐引用方式
GB/T 7714
Zhou, Xiaoli,Heus, Thijs,Kollias, Pavlos. Influences of drizzle on stratocumulus cloudiness and organization[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(13).
APA Zhou, Xiaoli,Heus, Thijs,&Kollias, Pavlos.(2017).Influences of drizzle on stratocumulus cloudiness and organization.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(13).
MLA Zhou, Xiaoli,et al."Influences of drizzle on stratocumulus cloudiness and organization".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.13(2017).
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