气候变化研究进展 ›› 2023, Vol. 19 ›› Issue (5): 592-604.doi: 10.12006/j.issn.1673-1719.2023.088

• 气候系统变化 • 上一篇    下一篇

2001—2020年中国月尺度热带气旋灾害时空变化特征研究

赵珊珊1,2(), 李莹1,2(), 赵大军3, 周星妍1,2, 艾婉秀1,2   

  1. 1 中国气象局气候预测研究重点开放实验室,国家气候中心,北京 100081
    2 国家气候中心,北京 100081
    3 中国气象科学研究院灾害天气国家重点实验室,北京 100081
  • 收稿日期:2023-04-23 修回日期:2023-06-27 出版日期:2023-09-30 发布日期:2023-08-29
  • 通讯作者: 李莹,女,高级工程师,yingli@cma.gov.cn
  • 作者简介:赵珊珊,女,正研级高级工程师,zhaoss@cma.gov.cn
  • 基金资助:
    国家自然科学基金项目(42005029);国家自然科学基金项目(41875120);上海台风研究基金项目(TFJJ202201);国家重点研发项目(2018YFC1509007)

Spatio-temporal characteristics of tropical cyclone disaster on monthly scale over China during 2001-2020

ZHAO Shan-Shan1,2(), LI Ying1,2(), ZHAO Da-Jun3, ZHOU Xing-Yan1,2, AI Wan-Xiu1,2   

  1. 1 China Meteorological Administration Key Laboratory for Climate Prediction Studies, National Climate Center, Beijing 100081, China
    2 National Climate Centre, China Meteorological Administration, Beijing 100081, China
    3 State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China
  • Received:2023-04-23 Revised:2023-06-27 Online:2023-09-30 Published:2023-08-29

摘要:

在全球变暖背景下,西北太平洋和南海热带气旋(TC)移动路径发生了明显变化。中国社会经济迅速发展导致承灾体暴露度增加,中国TC灾害的时空分布呈现新的特征。利用2001—2020年中国省级TC灾害损失资料,对比分析了前后10年中国月尺度TC灾害的时空分布特征。结果表明:中国7—9月的TC灾害损失占全年总损失的84%以上,大部分省(区、市)TC灾害损失峰值出现在8月,但广西峰值出现在7月,海南、内蒙古和黑龙江出现在9月;中国致灾TC(DTC)中有15%未登陆中国,未登陆DTC在海南发生频次最高,在黑龙江造成的损失最重;与2001—2010年相比,2011—2020年中国DTC年频数增加,其中未登陆DTC年频数增加,登陆DTC年频数减少,但8月登陆和未登陆DTC频数均增加;受西北太平洋和南海TC活动路径变化的影响,2011—2020年中国8月DTC灾害损失更突出,未登陆DTC影响增大,DTC影响范围向北扩展,给中国TC灾害预报预警和防台减灾工作带来更严峻的挑战。

关键词: 热带气旋(TC), 灾害损失, 热带气旋路径, 月尺度, 致灾热带气旋(DTC)

Abstract:

Under the background of global warming, the tracks of tropical cyclones (TCs) have changed significantly in the Northwest Pacific and the South China Sea. As a result of rapid socio-economic development in China, the exposure to disaster has increased, leading to the new characteristics of TC disasters in China. By utilizing data on provincial-level TC disaster losses from 2001 to 2020, a comparative analysis was conducted to examine the changes of TC disasters in China, with a specific emphasis on monthly variations. The findings reveal that TC disasters losses in China from July to September accounted for more than 84% of the annual total. Most of the 22 provinces (regions, municipalities) experienced the peak of TC disaster losses in August, while Guangxi witnessed the peak in July, and Hainan, Inner Mongolia, and Heilongjiang documented their highest losses in September. Among the disastrous TCs (DTCs) that caused losses to China, approximately 15% did not make landfall. Frequency of non-landfalling DTCs was the highest in Hainan, while TC disaster losses induced by non-landfalling DTCs was the heaviest in Heilongjiang. The annual frequency of DTCs and non-landfalling DTCs during 2011-2020 in China was greater than those during 2001-2010. However, the frequency of landfalling DTCs during 2011-2020 was less than that during 2001-2010. Nonetheless, both landfalling and non-landfalling DTCs demonstrated an augmented frequency in August. Influenced by the changes in TC tracks in the Northwest Pacific and the South China Sea, the prominence of TC disaster losses in August has intensified over the past decade in China. The influence of non-landfalling DTCs have aggravated, and the affected areas by DTCs have expanded northward. These changes pose more challenges for TC disaster forecasting, early warning, and disaster risk reduction efforts in China.

Key words: Tropical cyclone (TC), Disaster losses, TC track, Monthly scale, Disastrous TC (DTC)

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