| 台风Danas(1324) 对台风Fitow(1323) 影响的诊断分析及数值试验 |
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| 引用本文： | 周凯,闵锦忠,庄潇然,周亚星.台风Danas(1324) 对台风Fitow(1323) 影响的诊断分析及数值试验[J].热带气象学报,2017,33(4):488-499. |
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| 作者姓名： | 周凯 闵锦忠 庄潇然 周亚星 |
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| 作者单位： | 1.南京信息工程大学气象灾害预报预警与评估协同创新中心，江苏 南京 210044 |
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| 基金项目： | 国家重点基础研究发展计划项目2013CB430102国家自然科学基金重点项目41430427江苏省高校自然科学重大基础研究项目11KJA170001 |
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| 摘 要： | 利用FNL资料和WRF模式进行数值试验，并在此基础上研究了1324号台风Danas对1323号台风Fitow的影响特征。分析结果表明，台风Fitow登陆前、后的强度变化及其东边界与台风Danas相连的水汽输送通道的变化直接相关。台风Fitow登陆前，其水汽输入主要是由副热带高压西南侧环境场的偏东气流带来，而上游台风Danas截取了环境场输送给台风Fitow的水汽，抑制了Fitow的发展。但在台风Fitow登陆后，台风Danas环境场的水汽反过来起到转运作用，增加了Fitow的水汽收入，加剧其北侧的强降水。台风Danas以水汽通道为纽带影响台风Fitow登陆前的强度和在陆上非对称降水的分布。此外，台风Danas的北上影响了副热带高压的强度，使其东退且改变台风Fitow的引导气流，影响了Fitow的登陆位置；并在Fitow登陆后施加了偏南引导气流，令其逆时针打转。
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| 关 键 词： | 双台风 水汽通道 强度和路径 数值模拟 |
| 收稿时间： | 2016-06-13 |
THE DIAGNOSTIC ANALYSIS AND NUMERICAL EXPERIMENT ABOUT THE EFFECT OF TYPHOON DANAS(1324) ON TYPHOON FITOW(1323) |
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| Institution: | 1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China2.Key Laboratory of Meteorological Disaster of Ministry of Education, NUIST, Nanjing 210044, China3.The Chinese People's Liberation Army 69094 Unit, Kashi 844200, China |
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| Abstract: | In recent years, some binary tropical cyclones often bring serious disasters to the affected areas, so the interaction between the two typhoons has received more and more attention.The effect of typhoon Danas(1324) on the typhoon Fitow(1323) was studied with the FNL data and WRF model.The results show that the intensity of the change of Fitow while before and after landing is directly related to the change of the eastern boundary water vapor transport channel, which link with Danas.Before Fitow landing, the water vapor channel is mainly caused by the environment field easterly stream on the southwest side of the subtropical high.Danas at the upstream intercepts environmental field delivering water vapor to Fitow and inhibited its development. However, Fitow after landing, Danas on the environment of the water vapor in turn plays a role in the transport, increasing the Fitow of the water vapor income, and increasing its north side of the strong precipitation.Danas, through water vapor as a link, affect the intensity of Fitow before its landing and Fitow's asymmetric precipitation distribution onshore.In addition, Danas's northward movement affects the intensity of subtropical high, causing the subtropical high's east back, changing Fitow's steer flow, affecting the Fitow landing position, and Fitow's counterclockwise spinning around the landing by applying the southward steer flow. |
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