Nature Climate Change最新文献_第6页

Globally and intergenerationally unequal exposure to hourly heat extremes 全球和代际对每小时极端高温的不平等暴露

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-10 DOI: 10.1038/s41558-026-02724-8

Weilin Liao, Xuanzong Zhang, Xiaoping Liu, Ming Luo, Yang Chen, Duo Chan, Wenfeng Zhan, Yimin Chen, Guangzhao Chen, Rouyan Gong, Lei Zhao

{"title":"Globally and intergenerationally unequal exposure to hourly heat extremes","authors":"Weilin Liao, Xuanzong Zhang, Xiaoping Liu, Ming Luo, Yang Chen, Duo Chan, Wenfeng Zhan, Yimin Chen, Guangzhao Chen, Rouyan Gong, Lei Zhao","doi":"10.1038/s41558-026-02724-8","DOIUrl":"10.1038/s41558-026-02724-8","url":null,"abstract":"Heat extremes are intensifying under climate change, yet these events are traditionally identified using daily temperature metrics, which fail to capture the full dynamics of heat events. Here we present a global assessment of hourly heat extremes (HHEs) in summer, and show that HHEs are emerging worldwide and exhibit marked unequal exposure across regions and generations. Under a high-emissions scenario, global HHEs are projected to increase fourfold and their population exposure to grow sixfold by late century. Each hot day will gain about four hot hours, and a further three hot hours will occur on non-hot days, which daily metrics overlook. Low- and middle-income countries bear more than three-quarters of the current and future heat exposure, and successive generations, particularly in low-income countries, face much higher lifetime exposure than earlier cohorts. These findings underscore the urgent need for hourly-scale risk assessments, public preparedness and designing equitable strategies in a warming world. The authors quantify the global emergence of hourly heat extremes (HHEs), highlighting exposure overlooked by daily metrics. HHEs will increase fourfold by the end of the century under high emissions, with low- and middle-income countries, as well as successive generations, facing disproportionate exposure.","PeriodicalId":18974,"journal":{"name":"Nature Climate Change","volume":"16 9","pages":"1045-1052"},"PeriodicalIF":26.9,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148729013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydraulic traits govern opposing range shifts of montane trees under warming 气候变暖条件下，山地树木的水力特性决定了其相对范围的移动

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-06 DOI: 10.1038/s41558-026-02726-6

Xianliang Zhang (, ), Hongyan Liu (, ), Rubén D. Manzanedo, Justin T. Maxwell, Loïc D’Orangeville, Mingchao Du (, ), Tim Rademacher

{"title":"Hydraulic traits govern opposing range shifts of montane trees under warming","authors":"Xianliang Zhang \u0000 (, ), Hongyan Liu \u0000 (, ), Rubén D. Manzanedo, Justin T. Maxwell, Loïc D’Orangeville, Mingchao Du \u0000 (, ), Tim Rademacher","doi":"10.1038/s41558-026-02726-6","DOIUrl":"10.1038/s41558-026-02726-6","url":null,"abstract":"Montane tree species are undergoing accelerated elevational range shifts in response to climate warming, yet the mechanisms driving interspecific variation remain elusive. Here we show that hydraulic traits predict opposing biogeographic responses of montane trees to warming and drought. By integrating hemispheric-scale dendrochronological records from 45 species (121,743 individuals), global observations of elevational range shifts from 102 species and hydraulic trait data for 11 functional attributes, we demonstrate that climate-sensitive species tended to rapidly track warming into higher elevations, whereas taxa resistant to these stresses were poised to have expanded downslope. In addition, elevational dependencies in drought sensitivity changed over time for nearly one-third of the species, revealing dynamic reorganization of climate–growth relationships across mountain gradients. These findings establish leaf- and stem-level hydraulic traits as a fundamental predictor of range dynamics, providing a mechanistic basis for forecasting the reorganization of montane forests under continued climate change. The authors integrate dendrochronological records with range shifts to show that shifts in montane tree species are tightly linked to tree hydraulic properties. While climate-sensitive species track warming to higher elevations, stress-resistant species expand downslope.","PeriodicalId":18974,"journal":{"name":"Nature Climate Change","volume":"16 9","pages":"1084-1091"},"PeriodicalIF":26.9,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148693572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Persistence of Arctic Ocean acidification under negative emissions 负排放条件下北冰洋酸化的持续性

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-06 DOI: 10.1038/s41558-026-02715-9

Eike E. Köhn, Lester Kwiatkowski, Juliette Mignot, Guillaume Gastineau, Olivier Torres, James C. Orr

{"title":"Persistence of Arctic Ocean acidification under negative emissions","authors":"Eike E. Köhn, Lester Kwiatkowski, Juliette Mignot, Guillaume Gastineau, Olivier Torres, James C. Orr","doi":"10.1038/s41558-026-02715-9","DOIUrl":"10.1038/s41558-026-02715-9","url":null,"abstract":"Although net negative emissions of carbon dioxide (CO2) are essential to meet climate targets, little is known about how declining atmospheric CO2 levels will affect ocean acidification. Here, by analysing the acidity ([H+]) and corrosivity to aragonite (ΩArag) in eight Earth system models that made simulations under rising then falling CO2 levels, we identify the Arctic as a hotspot for delayed reversibility of ocean acidification. Under falling CO2, Arctic surface waters remain comparatively more acidic, and aragonite-corrosive conditions (ΩArag < 1) persist until atmospheric CO2 drops ~120 ppm below the threshold at which they first appeared under rising CO2. This hysteresis arises from the erosion of the natural surface-layer deficit in dissolved inorganic carbon, initially maintained by sea ice limiting air–sea gas exchange and not fully restored as sea ice recovers during CO2 decline. Thus, the Arctic Ocean experiences not only the greatest acidification but also the most delayed benefits from negative emissions. Changes in the Earth system may persist long after atmospheric CO2 levels decline. This study examines ocean acidification and how it will persist in ocean regions globally, with the Arctic identified as the area that experiences relief from acidification the latest under negative emissions.","PeriodicalId":18974,"journal":{"name":"Nature Climate Change","volume":"16 9","pages":"1053-1060"},"PeriodicalIF":26.9,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41558-026-02715-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148693589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Social influence shapes climate attitudes and action 社会影响决定了对气候的态度和行动

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02711-z

Sam Hampton, Briony Latter, Lorraine Whitmarsh

引用次数: 0

Challenges and next steps in climate disaster communication 气候灾害传播面临的挑战和下一步行动

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02714-w

J. Brian Houston, Jennifer M. First

引用次数: 0

Promoting effective and inclusive communication 促进有效和包容的沟通

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02729-3

引用次数: 0

Challenges and next steps in climate disaster communication 气候灾害传播面临的挑战和下一步行动

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02714-w

J. Brian Houston, Jennifer M. First

引用次数: 0

Social media and the changing landscape of climate change communication 社会媒体和气候变化传播的变化

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02680-3

Mike S. Schäfer, Julia Metag

{"title":"Social media and the changing landscape of climate change communication","authors":"Mike S. Schäfer, Julia Metag","doi":"10.1038/s41558-026-02680-3","DOIUrl":"10.1038/s41558-026-02680-3","url":null,"abstract":"Social media have become central to climate change communication, shaping how information circulates, how publics engage and who participates. We synthesize research about the prevalence and dominant forms of climate-related content on social media, as well as the documented effects of social media on attitudes, knowledge and behaviour, which exist but are context dependent and vary with platform affordances, governance regimes and sociopolitical conditions. We also examine how social media reshape the broader landscape of climate change communication by enabling outreach and diverse voices, while fostering fragmentation, ideological bias and misinformation, as well as marginalizing traditional media. Finally, we identify key gaps, including restricted data access, limited cross-regional research, and the underrepresentation of non-Western contexts and region-specific platforms, and call for an expanded, reflexive research agenda in future work. Social media have become an important arena for climate change communication. This Review synthesizes climate-related content on social media, its effects on climate attitudes, knowledge and behaviour, and its role in reshaping the broader communication landscape.","PeriodicalId":18974,"journal":{"name":"Nature Climate Change","volume":"16 8","pages":"897-906"},"PeriodicalIF":26.9,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148667562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Promoting effective and inclusive communication 促进有效和包容的沟通

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02729-3

引用次数: 0

Social media and the changing landscape of climate change communication 社会媒体和气候变化传播的变化

IF 26.9 1区地球科学

Nature Climate Change Pub Date : 2026-08-04 DOI: 10.1038/s41558-026-02680-3

Mike S. Schäfer, Julia Metag

{"title":"Social media and the changing landscape of climate change communication","authors":"Mike S. Schäfer, Julia Metag","doi":"10.1038/s41558-026-02680-3","DOIUrl":"10.1038/s41558-026-02680-3","url":null,"abstract":"Social media have become central to climate change communication, shaping how information circulates, how publics engage and who participates. We synthesize research about the prevalence and dominant forms of climate-related content on social media, as well as the documented effects of social media on attitudes, knowledge and behaviour, which exist but are context dependent and vary with platform affordances, governance regimes and sociopolitical conditions. We also examine how social media reshape the broader landscape of climate change communication by enabling outreach and diverse voices, while fostering fragmentation, ideological bias and misinformation, as well as marginalizing traditional media. Finally, we identify key gaps, including restricted data access, limited cross-regional research, and the underrepresentation of non-Western contexts and region-specific platforms, and call for an expanded, reflexive research agenda in future work. Social media have become an important arena for climate change communication. This Review synthesizes climate-related content on social media, its effects on climate attitudes, knowledge and behaviour, and its role in reshaping the broader communication landscape.","PeriodicalId":18974,"journal":{"name":"Nature Climate Change","volume":"16 8","pages":"897-906"},"PeriodicalIF":26.9,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148667566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0