臺風"莫蘭蒂"登陸前后微物理特征研究

doi:10.12306/2021jms.0077

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臺風"莫蘭蒂"登陸前后微物理特征研究
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                        10.12306/2021jms.0077
                    
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中圖分類號:P401
基金項目:國家自然科學基金面上資助項目(42075053;41275099)

Research on the microphysical characteristics of typhoon Moranti before and after landing

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基于廈門市2016年9月14—15日S波段雙偏振雷達資料,研究了2016年第14號臺風"莫蘭蒂"登陸前后降水特征以及它們的差異。結(jié)果表明:臺風"莫蘭蒂"登陸過程經(jīng)歷了登陸前緩慢減弱、登陸后快速減弱、登陸后緩慢減弱3個階段。登陸前,臺風螺旋雨帶中對流旺盛,發(fā)展高度高,冷云過程較強,0 ℃層以上存在大量的冰晶。0 ℃層以下,粒子破碎比較嚴重,降水以小滴為主。登陸后快速減弱階段,受地形影響,臺風內(nèi)區(qū)發(fā)展高度升高。登陸后快速減弱階段,螺旋雨帶發(fā)展高度降低,0 ℃層上冰相粒子數(shù)量減少,0 ℃層以下,粒子之間的碰并增長和蒸發(fā)過程明顯,降水以中小雨滴為主,暖云過程占主導。

Abstract:

Based on the S-band dual-polarization radar data of Xiamen City on September 14-15, 2016, the microphysical characteristics of precipitation before and after the landing of Typhoon Moranti in 2016 and their differences were analyzed. Results show that the landing process of typhoon Moranti experienced three stages: slow weakening before landing, rapid weakening after landing, and slow weakening after landing. Before landing, the typhoon had strong convection in the spiral rain belt, the development height was high, the cold cloud process was strong, and there were a large number of ice crystals above the zero degree layer. Below the zero-degree layer, particle fragmentation is severe, and precipitation is dominated by small droplets. During the rapid weakening stage after landing, the development height of the inner area of the typhoon increased due to the influence of the topography. In the fast weakening stage after landing, the development height of the spiral rain band decreases, and the number of ice particles on the zero-degree layer decreases. Below the zero-degree layer, the collision between particles increases and the evaporation process is obvious. The precipitation is dominated by medium and small raindrops, and the warm cloud process dominates.

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馬孝林,王舉,黃泓,王學忠,王珍.臺風"莫蘭蒂"登陸前后微物理特征研究.氣象科學,2022,42(6):730-741 MA Xiaolin, WANG Ju, HUANG Hong, WANG Xuezhong, WANG Zhen. Research on the microphysical characteristics of typhoon Moranti before and after landing. Journal of the Meteorological Sciences,2022,42(6):730-741

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收稿日期:2021-08-23
最后修改日期:2021-09-06
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在線發(fā)布日期: 2023-03-03
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