台风莫拉克登陆期间的中尺度波动特征分析

林青; 沈新勇; 高守亭

doi:10.3878/j.issn.1006-9585.2013.11086

台风莫拉克登陆期间的中尺度波动特征分析

doi: 10.3878/j.issn.1006-9585.2013.11086

1.
南京信息工程大学气象灾害教育部重点实验室, 南京 210044;中国科学院大气物理研究所云降水物理与强风暴实验室, 北京 100029;福建省气象台, 福州 350001
2.
南京信息工程大学气象灾害教育部重点实验室, 南京 210044
3.
中国科学院大气物理研究所云降水物理与强风暴实验室, 北京 100029

基金项目: 国家重点基础研究发展计划项目2012CB417201，中国气象科学研究院灾害天气国家重点实验室开放课题2013LASW-A06

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出版历程
- 收稿日期: 2011-06-13
- 修回日期: 2013-10-31

Analysis of Mesoscale Wave Features during the Landing of Typhoon Morakot

1.
Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044;Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics Chinese Academy of Sciences, Beijing 100029;Fujian Province Meteorology Observatory, Fuzhou 350001
2.
Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing 210044
3.
Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics Chinese Academy of Sciences, Beijing 100029

摘要

摘要: 利用波作用理论对台风莫拉克登陆期间的降水进行诊断分析。结果表明：波作用密度异常能在一定程度上指示暴雨雨区发展移动，其异常值的空间分布能够反映雨区上空动力场和热力场的典型垂直结构特征。台风内中尺度波动与暴雨落区宏观上具有一定联系。为了详细研究台风内部的波动特征，利用WRF（Weather Research and Forecasting model）模式模拟的高分辨率资料对台风登陆过程中波动特征进行分析，低波数波动的传播主导强对流的非对称分布，2波在登陆初期对对流分布起着关键作用，中尺度波动中同时存在涡旋罗斯贝波以及重力惯性波的特征，对登陆期间涡旋混合的现象有重要作用。
- 波作用密度 /
- 低波数结构 /
- 波动能量
Abstract: General waveactivity density is used to diagnose the rainfall event of the landing of typhoon Morakot. The results show that the anomaly of the wave-activity density corresponds with the observed 6-h accumulated surface rainfall. High resolution simulation data is used to analyze the wave characteristics of the landing of typhoon Morakot, the low wavenumber structures that dominated the distribution of the asymmetric convection, and the amplitude of the two-wavenumber waves that occurred during landfall. The strong convergence and divergence of the asymmetric wind shows characteristics of gravity inertial waves. The mesoscale waves that induced mixing happened between the eye wall and the eye.
- Wave-activity density /
- Low wavenumber structures /
- Wave energy

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参考文献(16)

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