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Variation in fire danger in the Beijing-Tianjin-Hebei region over the past 30 years and its linkage with atmospheric circulation

文献类型：期刊论文

作者Bai, Mengxin2; Du, Wupeng2; Wu, Maowei3; Zhang, Chengpeng4; Xing, Pei2; Hao, Zhixin1,3
刊名CLIMATIC CHANGE
出版日期2024-02-01
卷号177期号:2页码:22
ISSN号0165-0009
关键词FWI Beijing-Tianjin-Hebei region Trend Atmospheric circulation High/low-fire danger period
DOI10.1007/s10584-024-03689-3
通讯作者Du, Wupeng(duwupeng@sina.com) ; Hao, Zhixin(haozx@igsnrr.ac.cn)
英文摘要It is crucial to investigate the characteristics of fire danger in the Beijing-Tianjin-Hebei (BTH) region to improve the accuracy of local fire danger monitoring, forecasting, and management. With the use of instrumental observation data from 173 national meteorological stations in the BTH region from 1991 to 2020, the fire weather index (FWI) is first calculated in this study, and its spatiotemporal characteristics are analyzed. The high- and low-fire danger periods based on the FWI occur in April and August, respectively, with significant decreasing and increasing trends throughout the BTH region over the past 30 years. Next, the contributions of different meteorological factors to the FWI are quantified via a detrending technique. Most regions are affected by precipitation during the high-fire danger period. Both the maximum surface air temperature (Tmax) and precipitation, however, notably contribute to the FWI trend changes during the low-fire danger period. Then, we assess the linkage with atmospheric circulation. Abundant water vapor from the Northwest Pacific and local upward motion jointly lead to increased precipitation and, as a consequence, a decreased FWI during the high-fire danger period. A lack of water vapor from the boreal zone and local downward movement could cause adiabatic subsidence and hence, amplify the temperature and FWI during the low-fire danger period. In contrast to shared socioeconomic pathway (SSP) 585, in which the FWI in the BTH region exhibits a north-south dipole during the low-fire danger period, SSP245 yields an east-west dipole during the low-fire danger period. This study reveals that there is a higher-than-expected probability of fire danger during the low-fire danger period. Therefore, it is essential to intensify research on the fire danger during the low-fire danger period to improve our ability to predict summer fire danger.
WOS关键词CLIMATE-CHANGE ; FOREST ; WEATHER ; REANALYSIS ; DROUGHT ; CHINA
资助项目National Natural Science Foundation of China[42171030] ; National Natural Science Foundation of China[42305055] ; Science and Technology Project of Beijing Meteorological Service[BMBKJ202302001] ; Key Project of Beijing Academy of Emergency Management Science and Technology[Y2023046] ; National Natural Science Foundation of China[41901017] ; Open Foundation of Key Laboratory of Land Surface Pattern and Simulation, Chinese Academy of Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种英语
出版者SPRINGER
WOS记录号WOS:001156664300002
资助机构National Natural Science Foundation of China ; Science and Technology Project of Beijing Meteorological Service ; Key Project of Beijing Academy of Emergency Management Science and Technology ; National Natural Science Foundation of China ; Open Foundation of Key Laboratory of Land Surface Pattern and Simulation, Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/202519]  
专题中国科学院地理科学与资源研究所
通讯作者Du, Wupeng; Hao, Zhixin
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Beijing Meteorol Serv, Beijing Municipal Climate Ctr, 44 Zizhuyuan Rd, Beijing 100089, Peoples R China
3.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China
4.Minist Nat Resources, Land Consolidat & Rehabil Ctr, Beijing 100035, Peoples R China
推荐引用方式
GB/T 7714		 Bai, Mengxin,Du, Wupeng,Wu, Maowei,et al. Variation in fire danger in the Beijing-Tianjin-Hebei region over the past 30 years and its linkage with atmospheric circulation[J]. CLIMATIC CHANGE,2024,177(2):22.
APA Bai, Mengxin,Du, Wupeng,Wu, Maowei,Zhang, Chengpeng,Xing, Pei,&Hao, Zhixin.(2024).Variation in fire danger in the Beijing-Tianjin-Hebei region over the past 30 years and its linkage with atmospheric circulation.CLIMATIC CHANGE,177(2),22.
MLA Bai, Mengxin,et al."Variation in fire danger in the Beijing-Tianjin-Hebei region over the past 30 years and its linkage with atmospheric circulation".CLIMATIC CHANGE 177.2(2024):22.

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来源：地理科学与资源研究所

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