Atmospheric Science Letters最新文献_第7页

Aerosol Effect on Orographic Clouds and Its Meteorological Feedback: A Numerical Case Study 气溶胶对地形云的影响及其气象反馈：数值实例研究

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-09 DOI: 10.1002/asl2.70022

Jiahao Zhang, Xinyi Lin, Qian Chen, Zeyong Zou

{"title":"Aerosol Effect on Orographic Clouds and Its Meteorological Feedback: A Numerical Case Study","authors":"Jiahao Zhang, Xinyi Lin, Qian Chen, Zeyong Zou","doi":"10.1002/asl2.70022","DOIUrl":"https://doi.org/10.1002/asl2.70022","url":null,"abstract":"Aerosol effect on orographic clouds and its feedback on the surrounding meteorological environment have been investigated using the Weather Research and Forecasting Model with the spectrum bin microphysics scheme. Analysis of aerosol impacts on water vapor mixing ratio, latent heating rates, and wind field reveals that enhanced aerosol loading invigorates convection accompanied by intensive latent heat release, which induces stronger convergence at 3–5 km of altitude and leads to increased horizontal wind speed around the periphery of clouds on the windward slope. Moreover, the enhanced negative buoyancy around the periphery of clouds under polluted condition induces the descent of dry air from the middle troposphere, together with the downslope winds, consequently resulting in lower humidity and higher temperature at lower levels of the lee side. Under clean condition, the surface temperature of the leeward slope is 6.0 K higher than that of the windward slope, while this difference is increased to 7.0 K under polluted condition. The surface relative humidity on the lee side is 42.6% and 21.6% for clean and polluted conditions, respectively. By intensifying the downslope wind and reducing leeside humidity, aerosols suppress subsequent cloud growth and thereby alter the precipitation pattern, leading to higher rain rates over the windward slope and leeward side under polluted and clean conditions, respectively.","PeriodicalId":50734,"journal":{"name":"Atmospheric Science Letters","volume":"27 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://rmets.onlinelibrary.wiley.com/doi/epdf/10.1002/asl2.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Investigating the Role of Climate Change in the 3 May 2025 Western Europe Hailstorm Using Atmospheric Analogs 利用大气模拟物研究气候变化在2025年5月3日西欧冰雹中的作用

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-09 DOI: 10.1002/asl2.70016

Davide Faranda, Tommaso Alberti

{"title":"Investigating the Role of Climate Change in the 3 May 2025 Western Europe Hailstorm Using Atmospheric Analogs","authors":"Davide Faranda, Tommaso Alberti","doi":"10.1002/asl2.70016","DOIUrl":"https://doi.org/10.1002/asl2.70016","url":null,"abstract":"On 3 May 2025, a severe hailstorm affected Paris and parts of western Europe. We assess whether anthropogenic climate change contributed to its intensity using ERA5 reanalyses and an analog-based attribution framework. The synoptic pattern featured a cut-off low and a surface cold front. We identify circulation analogs to 3 May 2025 in two periods, that is, a cooler “past” (1974–1999) and a warmer “present” (1999–2024), and compare thermodynamic conditions under otherwise similar large-scale flow. Hail probability and size are estimated with two models: (i) a logistic formulation using Convective Available Potential Energy (CAPE), deep-layer wind shear, and convective precipitation, and (ii) an extended model including freezing-level height and 850 hPa temperature. Models are calibrated with Île-de-France observations and validated independently. Present-day analogs exhibit significantly higher CAPE (+200 J/kg), a higher freezing level (+100–200 m), and similar deep-layer shear, yielding larger hail probability (+30%) and size (+2 cm). These results indicate that human-induced warming likely enhanced the hailstorm severity in this synoptic setting.","PeriodicalId":50734,"journal":{"name":"Atmospheric Science Letters","volume":"27 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://rmets.onlinelibrary.wiley.com/doi/epdf/10.1002/asl2.70016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-09

引用次数: 0

Investigating the Role of Climate Change in the 3 May 2025 Western Europe Hailstorm Using Atmospheric Analogs 利用大气模拟物研究气候变化在2025年5月3日西欧冰雹中的作用

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-09 DOI: 10.1002/asl2.70016

Davide Faranda, Tommaso Alberti

{"title":"Investigating the Role of Climate Change in the 3 May 2025 Western Europe Hailstorm Using Atmospheric Analogs","authors":"Davide Faranda, Tommaso Alberti","doi":"10.1002/asl2.70016","DOIUrl":"10.1002/asl2.70016","url":null,"abstract":"On 3 May 2025, a severe hailstorm affected Paris and parts of western Europe. We assess whether anthropogenic climate change contributed to its intensity using ERA5 reanalyses and an analog-based attribution framework. The synoptic pattern featured a cut-off low and a surface cold front. We identify circulation analogs to 3 May 2025 in two periods, that is, a cooler “past” (1974–1999) and a warmer “present” (1999–2024), and compare thermodynamic conditions under otherwise similar large-scale flow. Hail probability and size are estimated with two models: (i) a logistic formulation using Convective Available Potential Energy (CAPE), deep-layer wind shear, and convective precipitation, and (ii) an extended model including freezing-level height and 850 hPa temperature. Models are calibrated with Île-de-France observations and validated independently. Present-day analogs exhibit significantly higher CAPE (+200 J/kg), a higher freezing level (+100–200 m), and similar deep-layer shear, yielding larger hail probability (+30%) and size (+2 cm). These results indicate that human-induced warming likely enhanced the hailstorm severity in this synoptic setting.","PeriodicalId":50734,"journal":{"name":"Atmospheric Science Letters","volume":"27 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://rmets.onlinelibrary.wiley.com/doi/epdf/10.1002/asl2.70016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Aerosol Effect on Orographic Clouds and Its Meteorological Feedback: A Numerical Case Study 气溶胶对地形云的影响及其气象反馈：数值实例研究

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-09 DOI: 10.1002/asl2.70022

Jiahao Zhang, Xinyi Lin, Qian Chen, Zeyong Zou

{"title":"Aerosol Effect on Orographic Clouds and Its Meteorological Feedback: A Numerical Case Study","authors":"Jiahao Zhang, Xinyi Lin, Qian Chen, Zeyong Zou","doi":"10.1002/asl2.70022","DOIUrl":"10.1002/asl2.70022","url":null,"abstract":"Aerosol effect on orographic clouds and its feedback on the surrounding meteorological environment have been investigated using the Weather Research and Forecasting Model with the spectrum bin microphysics scheme. Analysis of aerosol impacts on water vapor mixing ratio, latent heating rates, and wind field reveals that enhanced aerosol loading invigorates convection accompanied by intensive latent heat release, which induces stronger convergence at 3–5 km of altitude and leads to increased horizontal wind speed around the periphery of clouds on the windward slope. Moreover, the enhanced negative buoyancy around the periphery of clouds under polluted condition induces the descent of dry air from the middle troposphere, together with the downslope winds, consequently resulting in lower humidity and higher temperature at lower levels of the lee side. Under clean condition, the surface temperature of the leeward slope is 6.0 K higher than that of the windward slope, while this difference is increased to 7.0 K under polluted condition. The surface relative humidity on the lee side is 42.6% and 21.6% for clean and polluted conditions, respectively. By intensifying the downslope wind and reducing leeside humidity, aerosols suppress subsequent cloud growth and thereby alter the precipitation pattern, leading to higher rain rates over the windward slope and leeward side under polluted and clean conditions, respectively.","PeriodicalId":50734,"journal":{"name":"Atmospheric Science Letters","volume":"27 3","pages":""},"PeriodicalIF":2.0,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://rmets.onlinelibrary.wiley.com/doi/epdf/10.1002/asl2.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147564272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-09

引用次数: 0

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-07

引用次数: 0

IF 2 4区地球科学

Atmospheric Science Letters Pub Date : 2026-03-07

引用次数: 0

Global Climatic Zones in the Last Glacial Maximum Estimated From Assimilated Temperature Data 从同化温度资料估计末次极盛期全球气候带

IF 2 4区地球科学