Zhao Huarui, Wu Liguang, Liang Xiangsan. 2015: Preliminary Application of the MWT Method to Separate Tropical Cyclone Circulation. Advances in Meteorological Science and Technology, 5(6): 31-36. DOI: 10.3969/j.issn.2095-1973.2015.06.005
Citation: Zhao Huarui, Wu Liguang, Liang Xiangsan. 2015: Preliminary Application of the MWT Method to Separate Tropical Cyclone Circulation. Advances in Meteorological Science and Technology, 5(6): 31-36. DOI: 10.3969/j.issn.2095-1973.2015.06.005
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Preliminary Application of the MWT Method to Separate Tropical Cyclone Circulation

  • 1. Nanjing University of Information Science and Technology, Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing 210044;

  • 2. Dalian Meteorological Bureau, Dalian 116001

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  • More and more researches need to separate tropical cyclone circulation from its environment in the observation and reanalysis data. The multiscale window transform (MWT) method is applied to the separation of tropical cyclone circulation from its environment and compared with tropical cyclone spatial removal technique and Lanczos filter in time. Through using these approaches to idealized wind fields, the MWT method is better than the other two approaches in the separation of tropical cyclone circulation. It is also found that the performance of the combined approach is better than that of individual approaches. In order to obtain better results, the spatial removal technique can be used first to separate tropical cyclone circulation and then the MWT or Lanczos filters in time is used for further separation of tropical cyclone circulation.
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