npj Climate and Atmospheric Science最新文献

Distinct tropospheric anomalies during sudden stratospheric warming events accompanied by strong and weak Ural Ridge 平流层突然变暖事件期间伴随着强乌拉尔山脉和弱乌拉尔山脉的不同对流层异常现象

IF 8.5 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2024-11-17 DOI: 10.1038/s41612-024-00826-8

Chongyang Zhang, Jiankai Zhang, Amanda C. Maycock, Wenshou Tian

{"title":"Distinct tropospheric anomalies during sudden stratospheric warming events accompanied by strong and weak Ural Ridge","authors":"Chongyang Zhang, Jiankai Zhang, Amanda C. Maycock, Wenshou Tian","doi":"10.1038/s41612-024-00826-8","DOIUrl":"10.1038/s41612-024-00826-8","url":null,"abstract":"Different tropospheric precursor anomalies leading to sudden stratospheric warmings (SSWs) may result in different circulation evolution. This study finds that there are distinct differences in tropospheric circulation evolutions during SSWs following anomalously strong- (SUR-SSWs) and weak- (WUR-SSWs) Ural ridge. SUR-SSWs exhibit enhanced East Asian trough in the following week, while enhanced Greenland ridge and negative tropospheric annular mode anomalies can persist for 1 month. In contrast, WUR-SSWs exhibit surface cooling over northern Eurasia without notable tropospheric annular mode anomalies. During SUR-SSWs, waves induced by the enhanced Ural wave source tend to propagate below the tropopause, amplifying the East Asian trough. Additionally, due to decreased wave phase speed, the preexisting Ural ridge anomalies migrate westward and amplify the Greenland ridge. Before WUR-SSWs, preexisting cooling over Northeast Asia migrates westward and amplifies northern Eurasia cooling. Thus, the Ural ridge anomalies prior to SSWs significantly influence post-SSW tropospheric circulation.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":" ","pages":"1-14"},"PeriodicalIF":8.5,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41612-024-00826-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645898","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

Dry soil moisture on the Tibetan plateau drives synchronous extreme heatwaves in Europe and East Asia 青藏高原干燥的土壤水分导致欧洲和东亚出现同步极端热浪

IF 8.5 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2024-11-17 DOI: 10.1038/s41612-024-00831-x

Jilan Jiang, Yimin Liu, Jun Meng, Guoxiong Wu, Bian He, Tingting Ma, Wen Bao, Jingfang Fan

{"title":"Dry soil moisture on the Tibetan plateau drives synchronous extreme heatwaves in Europe and East Asia","authors":"Jilan Jiang, Yimin Liu, Jun Meng, Guoxiong Wu, Bian He, Tingting Ma, Wen Bao, Jingfang Fan","doi":"10.1038/s41612-024-00831-x","DOIUrl":"10.1038/s41612-024-00831-x","url":null,"abstract":"Recently, extreme heatwaves have frequently concurrently swept across Europe and East Asia, causing severe cascading socioeconomic consequences. However, the nonlinear synchronization relationship between these heatwaves and their underlying physical mechanisms remains poorly understood. Utilizing the event synchronization climate network method, atmospheric dynamic diagnostics, and numerical experiments, we revealed robust synchronization between heatwaves over Europe and East Asia, strongly associated with dry soil moisture conditions over the Tibetan Plateau from the preceding winter to summer. Dry soil moisture triggers an equivalent barotropic anticyclone north of the Tibetan Plateau, coinciding with the subtropical westerly jet waveguide and initiating circumglobal atmospheric Rossby waves propagating westward and eastward. Consequently, an equivalent barotropic anticyclone develops over Europe. These anticyclones induce simultaneous heatwaves across Europe and East Asia by increasing downward solar radiation and adiabatic sinking, amplified by positive land-atmosphere feedback. Our findings significantly enhance the understanding and predictive capabilities of these synchronous heatwaves across Eurasia.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":" ","pages":"1-10"},"PeriodicalIF":8.5,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41612-024-00831-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645899","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

Historical and future trends in South Asian monsoon low pressure systems in a high-resolution model ensemble 高分辨率模式集合中南亚季风低压系统的历史和未来趋势

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-11-08 DOI: 10.1038/s41612-023-00502-3

S. Vishnu, William R. Boos, William D. Collins

引用次数: 0

Attributing Venice Acqua Alta events to a changing climate and evaluating the efficacy of MoSE adaptation strategy 将威尼斯Acqua Alta事件归因于气候变化并评估MoSE适应策略的有效性

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-11-08 DOI: 10.1038/s41612-023-00513-0

Davide Faranda, Mireia Ginesta, Tommaso Alberti, Erika Coppola, Marco Anzidei

引用次数: 0

Leveraging global climate models to assess multi-year hydrologic drought 利用全球气候模型评估多年水文干旱

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-11-07 DOI: 10.1038/s41612-023-00496-y

Michael J. F. Vieira, Tricia A. Stadnyk

引用次数: 0

Unraveling the strong covariability of tropical cyclone activity between the Bay of Bengal and the South China Sea 孟加拉湾与南海热带气旋活动的强协变性研究

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-11-07 DOI: 10.1038/s41612-023-00506-z

Zeming Wu, Chundi Hu, Lifei Lin, Weizhen Chen, Lixuan Huang, Zijian Lin, Song Yang

{"title":"Unraveling the strong covariability of tropical cyclone activity between the Bay of Bengal and the South China Sea","authors":"Zeming Wu, Chundi Hu, Lifei Lin, Weizhen Chen, Lixuan Huang, Zijian Lin, Song Yang","doi":"10.1038/s41612-023-00506-z","DOIUrl":"10.1038/s41612-023-00506-z","url":null,"abstract":"Herein, we report a strong in-phase covariability of tropical cyclone (TC) activity between the Bay of Bengal (BOB) and the South China Sea (SCS) during October–December of 1979–2019, and which is also the dominant mode of BOB–SCS TC activity, accounting for 35% of the total variances in TC track density. This inter-basin TC covariance is closely linked to the anomalies of tropical sea surface temperature, appearing as the intrinsic Indo-Pacific Tripole mode, which significantly affects the atmospheric circulations overlying the BOB–SCS. Interestingly, this mechanism works via modulating the local TC genesis frequency in the BOB–SCS. However, in terms of the migrated TCs among them, the Indo-Pacific Tripole mainly regulates their genesis location but not their frequency. More importantly, such inter-basin TC covariability still exists significantly even when the TC track data migrating from the SCS into the BOB are excluded. After all, only 19 TCs during the 41 years (1979–2019) are observed to migrate from the SCS to the BOB, which can only contribute slightly to increasing the covariability of BOB–SCS TC-track activity, but do not play a dominant role. Further, the numerical simulations suggest that although both the Indian and Pacific Oceans contribute to the atmospheric anomalies that affect the BOB–SCS TC activity, the Pacific-effect is twice as important.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":" ","pages":"1-12"},"PeriodicalIF":9.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41612-023-00506-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71491745","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

Recent changes in the climatological characteristics of daily contiguous rain areas over India 印度每日连续降雨地区气候特征的近期变化

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-11-04 DOI: 10.1038/s41612-023-00464-6

Mansi Bhowmick, Sandeep Sahany, Ananda Kumar Das

{"title":"Recent changes in the climatological characteristics of daily contiguous rain areas over India","authors":"Mansi Bhowmick, Sandeep Sahany, Ananda Kumar Das","doi":"10.1038/s41612-023-00464-6","DOIUrl":"10.1038/s41612-023-00464-6","url":null,"abstract":"This study documents the climatological feature (1951–1980) and recent changes (1981–2020) in rainfall characteristics considering the observed nearly full spectrum of rain event sizes (daily contiguous rain area (CRA) events) in all seasons over India. It is found that the low frequency very large CRA (~synoptic scale) from monsoon season contributes ~50% of annual rainfall. However, the small-sized CRA (isolated thunderstorms) are the most frequent daily rain events (~70% of annual frequency) and hence are important for rain-fed agricultural practices. The well-documented widespread drying trend in the monsoon season has manifested in the annual rainfall trend but with reduced magnitude illustrating the compensatory effect from other seasons. Spatial aggregated annual statistics show that there is no significant change in rainfall amount and frequency of occurrence of rain events in the recent past compared to the base period. However, seasonally the pre-monsoon rainfall amount has increased significantly. Annually, the number of extremely heavy CRA (EHR) events have significantly increased by ~55% owing to a significant increase in pre-monsoon and monsoon rainfall. In all seasons, small-sized extremely heavy CRA has intensified substantially by 50–200% as compared to the base period. Additionally, the rain events from areal category large (~Mesoscale Convective Complexes (MCC)) have intensified in all seasons except winter. Thus, to decrease the uncertainty in rain-fed agricultural practices and better prediction of EHR to develop effective climate change mitigation strategies; process studies beyond monsoon season and processes other than synoptic scales are also required.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":" ","pages":"1-12"},"PeriodicalIF":9.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41612-023-00464-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71491623","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

To what extent can the ozone valley over the Tibetan Plateau influence the East Asian summer precipitation? 青藏高原上空的臭氧谷对东亚夏季降水的影响有多大？

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-11-01 DOI: 10.1038/s41612-023-00508-x

Lingaona Zhu, Zhiwei Wu

{"title":"To what extent can the ozone valley over the Tibetan Plateau influence the East Asian summer precipitation?","authors":"Lingaona Zhu, Zhiwei Wu","doi":"10.1038/s41612-023-00508-x","DOIUrl":"10.1038/s41612-023-00508-x","url":null,"abstract":"The ozone valley over the Tibetan Plateau (OVTP) has experienced significant interannual variations during the past decades. Previous studies have primarily focused on the origins of OVTP rather than its climate impact. This study reveals that OVTP during its peak season (May–July) explains up to 15% of the summer precipitation variability in East Asia. The results suggest that the surface temperature (Ts) anomaly over the Tibetan Plateau (TP) acts as a link between OVTP and East Asian precipitation. Through the positive land-atmosphere feedback, the Ts anomaly over the TP is amplified. The anomalous Ts pattern persists into summer (June–August) due to the land memory effect and impacts the East Asian precipitation by modulating the local circulation. The Specified-Chemistry version of the Whole Atmosphere Community Climate Model is employed to validate that MJJ OVTP results in a substantial increase of Ts over TP and induces an anomalous anti-cyclone centered over the Yangtze-Huaihe River Basin during summer. Consequently, negative precipitation anomalies are observed in the Yangtze River Basin, while positive precipitation anomalies occur in Southern China. The linear baroclinic model further demonstrates that the diabatic heating over the TP serves as the link between MJJ OVTP and East Asian summer precipitation patterns. Our analysis of Coupled Model Intercomparison Project Phase 6 models reveals that a more accurate prediction of East Asian precipitation requires an improved understanding of the relationship between OVTP and TP Ts.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":" ","pages":"1-10"},"PeriodicalIF":9.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41612-023-00508-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71491624","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

Future changes in atmospheric synoptic variability slow down ocean circulation and decrease primary productivity in the tropical Pacific Ocean 未来大气天气变异性的变化减缓了热带太平洋的海洋环流并降低了初级生产力

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-09-08 DOI: 10.1038/s41612-023-00459-3

Olaf Duteil, Wonsun Park

引用次数: 0

Thermosteric and dynamic sea level under solar geoengineering 太阳地球工程下的热阻和动态海平面

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2023-09-07 DOI: 10.1038/s41612-023-00466-4

Chao Yue, Svetlana Jevrejeva, Ying Qu, Liyun Zhao, John C. Moore

引用次数: 0