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DOI | 10.1175/JAS-D-16-0214.1 |
Effects of Vertical Eddy Diffusivity Parameterization on the Evolution of Landfalling Hurricanes | |
Zhang, Feimin1,2; Pu, Zhaoxia2 | |
2017-06-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES
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ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2017 |
卷号 | 74期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | As a result of rapid changes in surface conditions when a landfalling hurricane moves from ocean to land, interactions between the hurricane and surface heat and moisture fluxes become essential components of its evolution and dissipation. With a research version of the Hurricane Weather Research and Forecasting Model (HWRF), this study examines the effects of the vertical eddy diffusivity in the boundary layer on the evolution of three landfalling hurricanes (Dennis, Katrina, and Rita in 2005). Specifically, the parameterization scheme of eddy diffusivity for momentum K-m is adjusted with the modification of the mixed-layer velocity scale in HWRF for both stable and unstable conditions. Results show that the change in the K-m parameter leads to improved simulations of hurricane track, intensity, and quantitative precipitation against observations during and after landfall, compared to the simulations with the original K-m. Further diagnosis shows that, compared to original K-m, the modified K-m produces stronger vertical mixing in the hurricane boundary layer over land, which tends to stabilize the hurricane boundary layer. Consequently, the simulated landfalling hurricanes attenuate effectively with the modified K-m, while they mostly inherit their characteristics over the ocean and decay inefficiently with the original K-m . |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403101200012 |
WOS关键词 | PLANETARY BOUNDARY-LAYER ; HIGH-RESOLUTION SIMULATIONS ; IN-SITU OBSERVATIONS ; AIR-SEA INTERACTION ; TROPICAL CYCLONES ; NUMERICAL-SIMULATION ; INTENSITY CHANGE ; SIMPLE-MODEL ; ALICIA 1983 ; WIND SHEAR |
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/29808 |
专题 | 地球科学 |
作者单位 | 1.Lanzhou Univ, Coll Atmospher Sci, Lanzhou, Peoples R China; 2.Univ Utah, Dept Atmospher Sci, Salt Lake City, UT 84112 USA |
推荐引用方式 GB/T 7714 | Zhang, Feimin,Pu, Zhaoxia. Effects of Vertical Eddy Diffusivity Parameterization on the Evolution of Landfalling Hurricanes[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2017,74(6). |
APA | Zhang, Feimin,&Pu, Zhaoxia.(2017).Effects of Vertical Eddy Diffusivity Parameterization on the Evolution of Landfalling Hurricanes.JOURNAL OF THE ATMOSPHERIC SCIENCES,74(6). |
MLA | Zhang, Feimin,et al."Effects of Vertical Eddy Diffusivity Parameterization on the Evolution of Landfalling Hurricanes".JOURNAL OF THE ATMOSPHERIC SCIENCES 74.6(2017). |
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