首页|Extraordinary hot extreme in summer 2022 over the Yangtze River basin modulated by the La Ni?a condition under global warming

Extraordinary hot extreme in summer 2022 over the Yangtze River basin modulated by the La Ni?a condition under global warming

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  • 国家科技期刊平台
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A widespread and prolonged hot extreme hit the Yangtze River basin in summer 2022,with 300 sites established new temperature records and nearly 96％stations endured more than 40 hot days.From the perspective of the combination effect of the global warming and La Niña condition,potential mechanisms of the hot extreme were investigated.Such a record-breaking hot extreme was caused by an extremely strong and westward-shifted western Pacific subtropical high(WPSH).The global warming effect contributed primarily to the abnormal hot days in the Yangtze River basin,coupled with the modulation of the La Niña condition.The sea surface temperature anomaly pattern under La Niña condition favored more convection activities over the western Pacific,encouraging an enhanced and westward-extended WPSH.In addition,an observation-based attribution analysis indicates that anthropogenic warming may increase the probability of such extensively persistent hot extreme by 1.8 times.

Hot extremeThe Yangtze River basinGlobal warmingTropical Pacific forcing

Zhen LIAO、Yu-Feng YUAN、Yang CHEN、Pan-Mao ZHAI

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State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China

National Natural science Foundation of ChinaNational Natural science Foundation of ChinaBasic Research Fund of CAMSBasic Research Fund of CAMSJoint Research Project for Meteorological Capacity Improvement

42105163423750412021Y0312023Z02522NLTSZ002

2024

10.1016/j.accre.2023.12.006

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

影响因子：0.806
ISSN：1674-9278
年,卷(期)：2024.15(1)
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