Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JAS-D-18-0270.1 |
Effects of Sea Spray on the Dynamics and Microphysics of an Idealized Tropical Cyclone | |
Shpund, J.; Khain, A.; Rosenfeld, D. | |
2019-08-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2019 |
卷号 | 76期号:8页码:2213-2234 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | The effect of sea spray particles (SSP) on the intensity and microphysical structure of an idealized tropical cyclone (TC) is investigated using the Weather Research and Forecasting Model with a new spectral bin microphysics package. The SSP size distribution in the hurricane boundary layer is calculated using a Lagrangian-Eulerian bin-microphysics model (LEM) with high spatial resolution and extremely high drop size resolution. Sea spray ascending in updrafts within the eyewall of a TC dramatically increases the concentration of cloud drops within a wide range of sizes and decreases the effective drop radius to the values typical of polluted continental clouds. At the same time, the presence of spray drops of a few hundred microns in radii trigger intense rain just above cloud base. As a result, sea spray creates clouds that have a unique combination of maritime and continental properties. Outside the eyewall, clouds remain extremely maritime. SSP are shown to increase substantially the maximum vertical velocity, the cloud water content, and the mass contents of ice particles within the eyewall. As a result, SSP lead to TC intensification, axis symmetrization, and a decrease in eyewall radius. We found a new mechanism where wind-generated sea spray particles invigorate the inner cloud bands by nucleating more cloud droplets, which leads to more water vapor condensation and greater latent heating. The dependence of this process on surface wind speed constitutes a positive feedback loop that can lead to higher hurricane intensity. The results of simulations of cloud microstructure in the hurricane eyewall are supported by observations. |
英文关键词 | Convective clouds Cyclogenesis cyclolysis Hurricanes typhoons Tropical cyclones Cloud resolving models Aerosol-cloud interaction |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000474922800002 |
WOS关键词 | MARINE BOUNDARY-LAYER ; SECONDARY ICE PARTICLES ; ROLL VORTICES ; SPECTRAL BIN ; MODEL. PART ; STRONG WIND ; PRECIPITATION FORMATION ; SIZE DISTRIBUTIONS ; DRAG COEFFICIENT ; HURRICANE IRENE |
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/185744 |
专题 | 地球科学 |
作者单位 | Hebrew Univ Jerusalem, Inst Earth Sci, Jerusalem, Israel |
推荐引用方式 GB/T 7714 | Shpund, J.,Khain, A.,Rosenfeld, D.. Effects of Sea Spray on the Dynamics and Microphysics of an Idealized Tropical Cyclone[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2019,76(8):2213-2234. |
APA | Shpund, J.,Khain, A.,&Rosenfeld, D..(2019).Effects of Sea Spray on the Dynamics and Microphysics of an Idealized Tropical Cyclone.JOURNAL OF THE ATMOSPHERIC SCIENCES,76(8),2213-2234. |
MLA | Shpund, J.,et al."Effects of Sea Spray on the Dynamics and Microphysics of an Idealized Tropical Cyclone".JOURNAL OF THE ATMOSPHERIC SCIENCES 76.8(2019):2213-2234. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论