npj Climate and Atmospheric Science最新文献_第5页

Mixed-phase cloud structure organizes winter return-stroke current and polarity 混合相云结构组织冬季回程电流和极性

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-08 DOI: 10.1038/s41612-026-01537-y

Nengxing Guo, Li Cai, Yuheng Niu, Yongxing Zeng, Tao Li, Wenzhao Lu, Yu Feng, Shanqiang Gu

{"title":"Mixed-phase cloud structure organizes winter return-stroke current and polarity","authors":"Nengxing Guo, Li Cai, Yuheng Niu, Yongxing Zeng, Tao Li, Wenzhao Lu, Yu Feng, Shanqiang Gu","doi":"10.1038/s41612-026-01537-y","DOIUrl":"https://doi.org/10.1038/s41612-026-01537-y","url":null,"abstract":"Winter thunderstorms are shallow yet can produce strong and frequently positive cloud-to-ground (CG) discharges. We matched 29,251 main or first return strokes from ten winters to terrain-relative temperature profiles and temperature-resolved cloud liquid water, cloud ice, and snow from the European Centre for Medium-Range Weather Forecasts Reanalysis version 5 (ERA5). In lower-profile environments, the 0, −8, and −25 ∘C isotherms were 2.27–2.51 km closer to the ground, while the −8 to −25 ∘C mixed-phase-region depth differed by only 56 m. Lower profiles preferentially enriched the strong-current tail: the fraction exceeding 200 kA increased from 14.6% to 21.3%, and the fraction exceeding 300 kA approximately doubled. This upper-tail response recurred in all ten winters and persisted after event-day weather adjustment. Positive CG probability responded most strongly to ERA5 cloud ice and snow at −8 to −15 ∘C. A one-standard-deviation increase raised the probability by 6.45 percentage points across event days and regions and by 4.03 percentage points within event-day grid cells, with positive winter-specific responses throughout the record. The terrain-relative position of the mixed-phase region therefore organizes the high-current tail, while its warm-layer frozen-condensate structure organizes polarity composition.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":"28 1","pages":""},"PeriodicalIF":9.0,"publicationDate":"2026-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148899608","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

FuXi-TC: a generative framework integrating deep learning and physics-based models for improved tropical cyclone forecasts FuXi-TC：集成深度学习和基于物理模型的生成框架，用于改进热带气旋预报

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-08 DOI: 10.1038/s41612-026-01501-w

Shan Guo,Lei Chen,Yangyang Zhao,Yuetan Lin,Zeyi Niu,Xinyan Zhang,Ziyao Sun,Xiaohui Zhong,Hao Li

引用次数: 0

Hail trajectories under climate change: disentangling the roles of moisture, melting level and updraft kinematics 气候变化下的冰雹轨迹：解开湿度、融化水平和上升气流运动学的作用

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-07 DOI: 10.1038/s41612-026-01519-0

Jannick Fischer, Matthew R. Kumjian, Yuzhu Lin, Kelly Lombardo

引用次数: 0

No evidence of statistically significant Eurasian winter warming or cooling caused by large eruptions over the last millennium 在过去的一千年里，没有统计上显著的证据表明欧亚大陆的冬季变暖或变冷是由大型火山喷发造成的

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-07 DOI: 10.1038/s41612-026-01535-0

Zilu Meng,Lorenzo M. Polvani

引用次数: 0

Potential aerosol tradeoffs of vessel speed reduction for fresh ship plume composition and tracer coverage 船舶航速降低对新船羽流组成和示踪剂覆盖的潜在气溶胶权衡

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-05 DOI: 10.1038/s41612-026-01532-3

Shao Shi,Tianlong Hu,Yin Zhang,Yujie Zhang,Yan Zhang,Shujun Bie,Huiran Feng,Yaling Zeng,Baohua Cai,Jianhuai Ye,Tzung-May Fu,Lei Zhu,Huizhong Shen,Chen Wang,Shu Tao,Xin Yang

引用次数: 0

A revised Köppen climate classification reveals hydrothermal controls on eco-climate over the Qinghai–Tibet Plateau 修正的Köppen气候分类揭示了热液对青藏高原生态气候的控制作用

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-05 DOI: 10.1038/s41612-026-01539-w

Tiexi Chen,Zhe Gu,Shengjie Zhou,Xin Chen,Bin He,Jian Peng,Hongying Li,Wenhui Li,Renjie Guo,Yingying He,Yingying Cui,Shengzhen Wang,Deliang Chen

引用次数: 0

Strong tropical cyclones have a more gradual increase trend through interaction with ocean subsurface 强热带气旋通过与海洋地下的相互作用，有逐渐增加的趋势

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-04 DOI: 10.1038/s41612-026-01534-1

Xinran Wang,Lei Zhou,I-I Lin,Hui Su,Han Zhang,Shoude Guan

引用次数: 0

Charting resilience at Rocky Mountain ski areas as winters shrink 在落基山滑雪场绘制冬季萎缩时的恢复力图

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-03 DOI: 10.1038/s41612-026-01530-5

Pramod Adhikari,Bart Geerts,Stefan Rahimi,Kristen L. Rasmussen,Bridger Huhn,Mikkel Quam

引用次数: 0

Contrasting Terrestrial Moisture Controls on Precipitation and Interannual Variability across the Southern and Northern Tibetan Plateau 青藏高原南部和北部陆地水分对降水和年际变化的控制对比

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-03 DOI: 10.1038/s41612-026-01536-z

Peng Qian,Bin Zhu,Chunsong Lu,Tong Zhu,Yufeng Shan,Meng Gao,Hanqing Kang,Yuying Wang,Zifa Wang,Hong Liao

引用次数: 0

Cloud-mediated radiative and precipitation pathways link summer Arctic circulation modes to sea-ice melt variability 云介导的辐射和降水路径将夏季北极环流模式与海冰融化变率联系起来

IF 9 1区地球科学

npj Climate and Atmospheric Science Pub Date : 2026-09-01 DOI: 10.1038/s41612-026-01533-2

Haotian Zhang, Yue Sun, Annan Chen, Chuanfeng Zhao

{"title":"Cloud-mediated radiative and precipitation pathways link summer Arctic circulation modes to sea-ice melt variability","authors":"Haotian Zhang, Yue Sun, Annan Chen, Chuanfeng Zhao","doi":"10.1038/s41612-026-01533-2","DOIUrl":"https://doi.org/10.1038/s41612-026-01533-2","url":null,"abstract":"Summer Arctic sea-ice melt exhibits strong interannual and regional variability, yet the cloud-mediated pathways linking atmospheric circulation to melt remain poorly quantified. Using satellite observations, reanalysis data, and sea-ice products for 2000–2024, we examine the Arctic Oscillation (AO) and two dipole-like circulation modes, DA1 and DA2. These modes organize distinct altitude- and phase-dependent cloud anomalies and coherent responses in net, shortwave, and longwave cloud radiative effects. The net response is governed primarily by shortwave cloud–surface-albedo interactions, while longwave effects provide a weaker but regionally relevant contribution. Snowfall and rainfall also vary systematically and can modify the snow–ice surface state and albedo. Across nine Arctic subregions, diagnosed net energy-equivalent responses from LWCRE, cloud-related SWCRE, and albedo-related SWCRE range from −1.73 to 7.95 cm for AO, −8.22 to 4.95 cm for DA1, and −4.69 to 8.25 cm for DA2 per standard deviation. Comparison with the corresponding regional summer sea-ice thickness responses indicates that these pathways provide a measurable but partial modulation of melt variability. These results highlight the importance of cloud-radiative, surface-albedo, and precipitation-related processes for understanding and predicting regional Arctic sea-ice change.","PeriodicalId":19438,"journal":{"name":"npj Climate and Atmospheric Science","volume":"5 1","pages":""},"PeriodicalIF":9.0,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148899610","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