主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2024, Vol. 40 ›› Issue (2): 41-50.doi: 10.3969/j.issn.1673-503X.2024.02.006

• Articles • Previous Articles     Next Articles

Analysis of lightning characteristics on land and its adjacent seas triggered by typhoons landing on Hainan Island from 2008 to 2017

Dongyan GUO1,2(),Hong CHEN1,2,*(),Youlong CHEN3,Xiaofang WENG1,Jianxing LIN1   

  1. 1. Hainan Meteorological Observatory, Haikou 570203, China
    2. Key Laboratory of South China Sea Meteorological Disaster Prevention and Mitigation of Hainan Province, Haikou 570203, China
    3. Meteorological Information Center of Hainan Province, Haikou 570203, China
  • Received:2022-04-14 Online:2024-04-28 Published:2024-05-25
  • Contact: Hong CHEN E-mail:gdy_628@126.com;87433270@qq.com

Abstract:

The data of Hainan lightning location monitoring network from 2008 to 2017 were used to analyze the characteristics of lightning activity triggered by typhoons landing in Hainan Island. The spatio-temporal distribution characteristics of lightning activity of typhoons on land and offshore in Hainan Island and its relationship with typhoon intensity and path change were analyzed, and the changes of lightning activity before and after typhoon landing were compared. The results show that the South China Sea summer monsoon is closely related to the lightning activity of typhoons landing in Hainan. The stronger the cold air activity, the weaker the lightning activity, and the stronger the sea temperature, the stronger the lightning activity. The lightning activity of the landing typhoon is relatively strong in summer, gradually weakening in autumn, and the weakest in spring. The spatial distribution of lightning activity was the most in the northwest quadrant of the typhoon center, followed by the northeast quadrant and the southeast quadrant. The typhoon center is more in the north than in the south, and in the north, the northwest is more than the northeast, and the southeast is the least. The lightning activity was more on the left side than on the right side of the typhoon moving direction, and the lightning activity was more on the left side than on the left side. The average lightning frequency of most typhoons is greater than that of land when the center of the typhoon is at sea. A few typhoons are accompanied by lightning outbreak during the landing and sailing stages, and some typhoons have spatial distribution conversion of lightning activity before and after landing. There is no obvious correlation between the intensity of lightning activity on land and offshore caused by typhoon landing on Hainan Island and the intensity of typhoon. The outbreak of lightning has a certain indication effect on the continuous enhancement or maintenance of the intensity of typhoon before landing.

Key words: Typhoon intensity, Typhoon path, Lightning activity

CLC Number: