DOI: 10.1175/JCLI-D-17-0850.1
Scopus记录号: 2-s2.0-85048677350
论文题名: Impacts of the 1900-74 increase in anthropogenic aerosol emissions from North America and Europe on Eurasian summer climate
作者: Undorf S. ; Bollasina M.A. ; Hegerl G.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 20 起始页码: 8381
结束页码: 8399
语种: 英语
英文关键词: Aerosols
; Anthropogenic effects
; Atmospheric circulation
; Model comparison
; Multidecadal variabili
; Summer/warm season
Scopus关键词: Aerosols
; Emission control
; Greenhouse gases
; Sulfur compounds
; Anthropogenic effects
; Atmospheric circulation
; Model comparison
; Multidecadal variabili
; Summer/warm season
; Climate models
英文摘要: The impact of North American and European (NAEU) anthropogenic aerosol emissions on Eurasian summer climate during the twentieth century is studied using historical single- and all-forcing (including anthropogenic aerosols, greenhouse gases, and natural forcings) simulations from phase 5 of the Coupled Model Intercomparison Project (CMIP5). Intermodel agreement on significant linear trends during a period of increasing NAEU sulfate emissions (1900-74) reveals robust features of NAEU aerosol impact, supported by opposite changes during the subsequent period of decreasing emissions. Regionally, these include a large-scale cooling and associated anticyclonic circulation, as well as a narrowing of the diurnal temperature range (DTR) over Eurasian midlatitudes. Remotely, NAEU aerosols induce a drying over the western African and northern Indian monsoon regions and a strengthening and southward shift of the subtropical jet consistent with the pattern of temperature change. Over Europe, the temporal variations of observed temperature, pressure, and DTR tend to agree better with simulations that include aerosols. Throughout the twentieth century, aerosols are estimated to explain more than a third of the simulated interdecadal forced variability of European near-surface temperature and more than half between 1940 and 1970. These results highlight the substantial aerosol impact on Eurasian climate, already identifiable in the first half of the twentieth century. This may be relevant for understanding future patterns of change related to further emission reductions. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110653
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
Recommended Citation:
Undorf S.,Bollasina M.A.,Hegerl G.C.. Impacts of the 1900-74 increase in anthropogenic aerosol emissions from North America and Europe on Eurasian summer climate[J]. Journal of Climate,2018-01-01,31(20)