globalchange  > 影响、适应和脆弱性
DOI: 10.1002/2016JD026369
论文题名:
On the upward flux of sea-spray spume droplets in high-wind conditions
作者: Wu L.; Cheng X.; Zeng Q.; Jin J.; Huang J.; Feng Y.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期:11
起始页码: 5976
结束页码: 5987
语种: 英语
英文关键词: high winds ; sea-spray spume droplet ; upward flux
英文摘要: It has been speculated that the spume droplets torn off from ocean waves in high wind speeds (larger than about 9 m s−1) enhance air-sea fluxes. However, the vertical transport of spume droplets in the high-wind atmospheric boundary layer (ABL) is little researched and lacks the support of numerical simulations. Based on observational data and the characteristics of high-wind ABL above the ocean, the vertical transport of spume droplets is studied and simulated. It is revealed that the existence of gusty wind with coherent structure during high winds is favorable for the vertical transport of the large-size droplets. The trajectories of 1000 spume droplets with different sizes under different wind speeds in the range 10–35 m s−1 are calculated, and the uplifting fraction of spume droplets that can reach the 100 m height in the ABL is parameterized by using a nondimensional factor U10 2/(r80g), where U10 is the wind speed at 10 m height, r80 the equilibrium radius of droplet at an equivalent 80% relative humidity, and g the gravitational acceleration. Then, the upward flux of large-size spume droplets and the mass concentration at 100 m height are evaluated. These numerical results are comparable to some observational data and show that the large-size spume droplets can be entrained into the ABL during high winds and then contribute to the air-sea mass fluxes. ©2017. American Geophysical Union. All Rights Reserved.
资助项目: 41305028
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62651
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: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou, China; Institute of Tropical and Marine Meteorology/Guangdong Provincial Key Laboratory of Regional Numerical Weather Prediction, China Meteorological Administration, Guangzhou, China

Recommended Citation:
Wu L.,Cheng X.,Zeng Q.,et al. On the upward flux of sea-spray spume droplets in high-wind conditions[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(11)
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