Global prevalence of compound heatwaves from 1980 to 2022
Global warming has led to increasing occurrence of hot extremes, yet our understanding of the compound heatwaves (CHW) of both day and night—the most threatening and harmful type—remains limited. Here we use the air temperature from ERA5-Land datasets to analyze key characteristics of global CHW fro...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-06-01
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| Series: | Advances in Climate Change Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S167492782500084X |
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| author | Kun Zhang Jin-Bao Li Michael Kwok-Po Ng Zheng-Fei Guo Amos P.K. Tai Shu-Wen Liu Xiao-Rong Wang Jie Zhang Jin Wu |
| author_facet | Kun Zhang Jin-Bao Li Michael Kwok-Po Ng Zheng-Fei Guo Amos P.K. Tai Shu-Wen Liu Xiao-Rong Wang Jie Zhang Jin Wu |
| author_sort | Kun Zhang |
| collection | DOAJ |
| description | Global warming has led to increasing occurrence of hot extremes, yet our understanding of the compound heatwaves (CHW) of both day and night—the most threatening and harmful type—remains limited. Here we use the air temperature from ERA5-Land datasets to analyze key characteristics of global CHW from 1980 to 2022. Our results demonstrate a pronounced increase in global CHW, with an annual cumulative intensity rising by 3.32 °C per decade (p < 0.001), approximately four times greater than the increases observed in individual heatwave types of daytime (0.73 °C per decade, p < 0.001) and nighttime (0.78 °C per decade, p < 0.001), respectively. High latitudes in the Northern Hemisphere, particularly the Arctic regions, have experienced the highest increases in CHW (>10 °C per decade), especially since 2005. Moreover, interannual variations of CHW are closely linked to major climate modes, displaying strong region-specific connections and varied lagged effect, particularly with ENSO and PDO in tropical regions. Altogether, these results reveal the unexpected prevalence of CHW in recent decades, emphasizing the urgent need to address its potential adverse impacts on human and ecosystem well-being. |
| format | Article |
| id | doaj-art-7c7dba3d5f564528aa7f80099dab92aa |
| institution | Matheson Library |
| issn | 1674-9278 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Advances in Climate Change Research |
| spelling | doaj-art-7c7dba3d5f564528aa7f80099dab92aa2025-06-29T04:51:38ZengKeAi Communications Co., Ltd.Advances in Climate Change Research1674-92782025-06-01163565575Global prevalence of compound heatwaves from 1980 to 2022Kun Zhang0Jin-Bao Li1Michael Kwok-Po Ng2Zheng-Fei Guo3Amos P.K. Tai4Shu-Wen Liu5Xiao-Rong Wang6Jie Zhang7Jin Wu8School of Geospatial Engineering and Science, Sun Yat-sen University, Zhuhai 519082, China; School of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong 999077, ChinaDepartment of Geography, The University of Hong Kong, Hong Kong, 999077 ChinaDepartment of Mathematics, Hong Kong Baptist University, Hong Kong, 999077 China; Corresponding author.School of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong 999077, ChinaDepartment of Earth and Environmental Sciences, Faculty of Science, The Chinese University of Hong Kong, Hong Kong 999077, China; State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong 999077, China; Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Hong Kong 999077, ChinaSchool of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong 999077, ChinaSchool of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong 999077, ChinaSchool of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong 999077, ChinaSchool of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong 999077, China; State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong 999077, China; Corresponding author. School of Biological Sciences, The University of Hong Kong, Hong Kong 999077, China.Global warming has led to increasing occurrence of hot extremes, yet our understanding of the compound heatwaves (CHW) of both day and night—the most threatening and harmful type—remains limited. Here we use the air temperature from ERA5-Land datasets to analyze key characteristics of global CHW from 1980 to 2022. Our results demonstrate a pronounced increase in global CHW, with an annual cumulative intensity rising by 3.32 °C per decade (p < 0.001), approximately four times greater than the increases observed in individual heatwave types of daytime (0.73 °C per decade, p < 0.001) and nighttime (0.78 °C per decade, p < 0.001), respectively. High latitudes in the Northern Hemisphere, particularly the Arctic regions, have experienced the highest increases in CHW (>10 °C per decade), especially since 2005. Moreover, interannual variations of CHW are closely linked to major climate modes, displaying strong region-specific connections and varied lagged effect, particularly with ENSO and PDO in tropical regions. Altogether, these results reveal the unexpected prevalence of CHW in recent decades, emphasizing the urgent need to address its potential adverse impacts on human and ecosystem well-being.http://www.sciencedirect.com/science/article/pii/S167492782500084XCompound heatwavesClimate modeGlobal patternTemporal dynamics |
| spellingShingle | Kun Zhang Jin-Bao Li Michael Kwok-Po Ng Zheng-Fei Guo Amos P.K. Tai Shu-Wen Liu Xiao-Rong Wang Jie Zhang Jin Wu Global prevalence of compound heatwaves from 1980 to 2022 Advances in Climate Change Research Compound heatwaves Climate mode Global pattern Temporal dynamics |
| title | Global prevalence of compound heatwaves from 1980 to 2022 |
| title_full | Global prevalence of compound heatwaves from 1980 to 2022 |
| title_fullStr | Global prevalence of compound heatwaves from 1980 to 2022 |
| title_full_unstemmed | Global prevalence of compound heatwaves from 1980 to 2022 |
| title_short | Global prevalence of compound heatwaves from 1980 to 2022 |
| title_sort | global prevalence of compound heatwaves from 1980 to 2022 |
| topic | Compound heatwaves Climate mode Global pattern Temporal dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S167492782500084X |
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