| A Numerical Simulation Study of Typhoon Rananim（0414） |
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| 作者姓名： | YU Zhenshou XU Wenming JI Chunxiao ZHAO Fang LOU Liyin |
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| 作者单位： | Wenzhou Meteorological Bureau，Meteorological Observatory of He'nan Province，Zhejiang Research Institute of Marine Meteorology，Wenzhou Meteorological Bureau，Wenzhou Meteorological Bureau Wenzhou 325003，Zhengzhou 450003，Hangzhou 310002，Wenzhou 325003，Wenzhou 325003 |
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| 基金项目： | Supported by the Meteorology Gathers Capital Plan Key Project of Zhejiang Province under Grant Nos.2004ZD03,2004ZD05,and the Technical Plan Key Project of Wenzhou under Grant No.S2003A011. |
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| 摘 要： | Using the high-resolution non-hydrostatic model ARPS (Advanced Regional Prediction System),the Typhoon Rananim (0414) was simulated by using the CINRAD Doppler radar data.The results before and after typhoon landfall show that model ARPS performs well to simulate the track,the variation of center pressure,as well as severe heavy rain of Rananim.Meanwhile,the simulated composite reflectivity was compared with the observed radar composite reflectivity.The numerical results reveal that the asymmetrical structure of Rananim plays an important role in its westward deflecting after landfall.The sensitivity simulation experiments of terrain effects on Rananim (0414) were also investigated,and the terrain of the southeastern China has important effects on Rananim turning right slightly of its track and increasing its intensity obviously,but when typhoon is far away from the coastline,the terrain only impacts slightly on the storm intensity during its landfall.The results show that topographic lifting contributes greatly to precipitation enhancement,and makes the distribution of precipitation more uneven.
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| 关 键 词： | 0414号台风 云娜 数值模拟 暴雨 ARPS |
| 收稿时间： | 9/1/2006 12:00:00 AM |
A Numerical Simulation Study of Typhoon Rananim(0414) |
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| YU Zhenshou,XU Wenming,JI Chunxiao,ZHAO Fang,LOU Liyin.A Numerical Simulation Study of Typhoon Rananim(0414)[J].Acta Meteorologica Sinica,2006,20(4):500-511. |
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| Authors: | YU Zhenshou XU Wenming JI Chunxiao ZHAO Fang LOU Liyin |
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| Affiliation: | Wenzhou Meteorological Bureau, Wenzhou 325003;Meteorological Observatory of He'nan Province, Zhengzhou 450003;Zhejiang Research Institute of Marine Meteorology, Hangzhou 310002;Wenzhou Meteorological Bureau, Wenzhou 325003;Wenzhou Meteorological Bureau, Wenzhou 325003 |
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| Abstract: | Using the high-resolution non-hydrostatic model ARPS (Advanced Regional Prediction System),the Typhoon Rananim (0414) was simulated by using the CINRAD Doppler radar data.The results before and after typhoon landfall show that model ARPS performs well to simulate the track,the variation of center pressure,as well as severe heavy rain of Rananim.Meanwhile,the simulated composite reflectivity was compared with the observed radar composite reflectivity.The numerical results reveal that the asymmetrical structure of Rananim plays an important role in its westward deflecting after landfall.The sensitivity simulation experiments of terrain effects on Rananim (0414) were also investigated,and the terrain of the southeastern China has important effects on Rananim turning right slightly of its track and increasing its intensity obviously,but when typhoon is far away from the coastline,the terrain only impacts slightly on the storm intensity during its landfall.The results show that topographic lifting contributes greatly to precipitation enhancement,and makes the distribution of precipitation more uneven. |
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| Keywords: | ARPS numerical simulation Typhoon Rananim heavy rain terrain |
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