Analysis on structure of Typhoon Longwang based on GPS dropwinsonde data

SHU Shou-juan; PENG Li-ran

Abstract:

As one of the most severe typhoons in the year 2005, Typhoon Longwang is chosen as a case study in this article. Throughout its life, two surveillance flights are carried out on it. Different from previous studies, GPS (global positioning system) Dropwinsonde data collected from the Dropwinsonde Observations for Typhoon Surveillance near the Taiwan Region is chosen to present the thermodynamic and kinetic structure at its two different stages of development. This study suggests that not only kinetic structure but also thermodynamic structure of Longwang are more robust in the second surveillance than the first surveillance, with stronger and larger circulation and a warmer core. Further research shows that the environmental vertical wind shear mainly contributes to the asymmetric structure of the typhoon. The strong vertical wind shear not only results in the distinct asymmetric structure, but also restrains the development of the typhoo.

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SHU Shou-juan, PENG Li-ran. Analysis on structure of Typhoon Longwang based on GPS dropwinsonde data [J]. Journal of Tropical Meteorology, 2011, 17(3): 193-201.

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Analysis on structure of Typhoon Longwang based on GPS dropwinsonde data

Key Laboratory of Mesoscale Severe Weather for Ministry of Education, School of Atmospheric Sciences, Nanjing University

Abstract: As one of the most severe typhoons in the year 2005, Typhoon Longwang is chosen as a case study in this article. Throughout its life, two surveillance flights are carried out on it. Different from previous studies, GPS (global positioning system) Dropwinsonde data collected from the Dropwinsonde Observations for Typhoon Surveillance near the Taiwan Region is chosen to present the thermodynamic and kinetic structure at its two different stages of development. This study suggests that not only kinetic structure but also thermodynamic structure of Longwang are more robust in the second surveillance than the first surveillance, with stronger and larger circulation and a warmer core. Further research shows that the environmental vertical wind shear mainly contributes to the asymmetric structure of the typhoon. The strong vertical wind shear not only results in the distinct asymmetric structure, but also restrains the development of the typhoo.

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Analysis on structure of Typhoon Longwang based on GPS dropwinsonde data

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