Climatic drivers of the Canadian wildfire episode in 2023OA
2023年5月加拿大发生极端野火事件并持续4个月时间.野火污染物排放对当地和下风向的空气质量造成了严重影响.本文对驱动此次野火事件的气象因子和相关大尺度环流进行了探究.研究表明,此次极端野火排放的二氧化碳相较往年同期增长了0.37Gt (527.1%).受罗斯贝波频散影响,同期加拿大中西部区域出现持续的位势高度正异常,促进气流下沉并引发局地高温,中西部区域5-6月最高温平均上升8.11℃,部分区域甚至超过10℃,导致野火排放的显著增长.受有利地形和泛北极地区快速增暖的影响,预期未来加拿大中西部发生极端野火的概率可能会显著上升.
Yihan Hu;Xu Yue;Chenguang Tian;
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control,Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,School of Environmental Science and Engineering,Nanjing University of Information Science&Technology(NUIST),Nanjing,China
环境科学
野火气候变化遥相关极端天气碳排放
《Atmospheric and Oceanic Science Letters》 2024 (004)
P.23-28 / 6
jointly supported by the National Key Research and Development Program of China [grant number 2023YFF0805402];the Natural Science Foundation of Jiangsu Province [grant number BK20220031]。
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