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DOI10.1002/2017JD027151
Aerosol Impacts on the Structure, Intensity, and Precipitation of the Landfalling Typhoon Saomai (2006)
Qu, Yi1,2; Chen, Baojun1,2; Ming, Jie1,2; Lynn, Barry H.3; Yang, Ming-Jen4
2017-11-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2017
卷号122期号:21
文章类型Article
语种英语
国家Peoples R China; Israel; Taiwan
英文摘要

Typhoon Saomai (2006) was simulated using the Weather Research and Forecasting (WRF) model with explicit spectral bin microphysics to investigate the effects of aerosol from mainland China on the intensity, structure, and precipitation of the landfalling storm. MAR (maritime), MIX (semicontinental), and CON (continental) experiments were conducted with different initial aerosol concentrations. Varying aerosol concentrations had little influence on the storm track but resulted in pronounced deviations in intensity and structures. The experiment with a high initial aerosol concentration showed invigorated convection at the periphery of the tropical cyclone (TC), which interfered with the reformation of the eyewall, leading to TC weakening. The minimum pressures in the CON and MIX experiments were increased by more than 30 hPa and 14.6 hPa, and their maximum wind speeds were 20 ms(-1) and 13 ms(-1) weaker than that in the MAR experiment, respectively. The rain rates in the MIX and CON experiments were 16.6% and 56.2% greater than that in the MAR run, with the differences mainly occurring in the outer rainbands. These results indicate that the aerosol concentration substantially affects the spatial distributions of cloud hydrometeors and rainfall. The increase of rainfall was triggered by an increase in the melting of graupel and cloud droplets collected by raindrops. Similarly, the graupel melting process also enhanced in the outer rainbands with increasing aerosol. Furthermore, a positive microphysics feedback associated with the rainwater in the outer rainbands played an important role in increasing the rain rate in more aerosol scenarios.


英文关键词typhoon aerosol cloud microphysics precipitation intensity structure
领域气候变化
收录类别SCI-E
WOS记录号WOS:000417195500037
WOS关键词OUTER SPIRAL RAINBANDS ; MESOSCALE MODEL MM5 ; TROPICAL CYCLONES ; CONVECTIVE CLOUDS ; HURRICANE IRENE ; LAYER STRUCTURE ; PART I ; SIMULATIONS ; MICROPHYSICS ; SENSITIVITY
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/32989
专题气候变化
作者单位1.Nanjing Univ, MOE, Key Lab Mesoscale Severe Weather, Nanjing, Jiangsu, Peoples R China;
2.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China;
3.Hebrew Univ Jerusalem, Dept Atmospher Sci, Jerusalem, Israel;
4.Natl Taiwan Univ, Dept Atmospher Sci, Taipei, Taiwan
推荐引用方式
GB/T 7714
Qu, Yi,Chen, Baojun,Ming, Jie,et al. Aerosol Impacts on the Structure, Intensity, and Precipitation of the Landfalling Typhoon Saomai (2006)[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(21).
APA Qu, Yi,Chen, Baojun,Ming, Jie,Lynn, Barry H.,&Yang, Ming-Jen.(2017).Aerosol Impacts on the Structure, Intensity, and Precipitation of the Landfalling Typhoon Saomai (2006).JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(21).
MLA Qu, Yi,et al."Aerosol Impacts on the Structure, Intensity, and Precipitation of the Landfalling Typhoon Saomai (2006)".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.21(2017).
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