Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071941 |
Aerosol-driven increase in Arctic sea ice over the middle of the twentieth century | |
Gagne, Marie-Eve1; Fyfe, John C.1; Gillett, Nathan P.1; Polyakov, Igor V.2,3; Flato, Gregory M.1 | |
2017-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:14 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | Updated observational data sets without climatological infilling show that there was an increase in sea ice concentration in the eastern Arctic between 1950 and 1975, contrary to earlier climatology infilled observational data sets that show weak interannual variations during that time period. We here present climate model simulations showing that this observed sea ice concentration increase was primarily a consequence of cooling induced by increasing anthropogenic aerosols and natural forcing. Indeed, sulphur dioxide emissions, which lead to the formation of sulphate aerosols, peaked around 1980 causing a sharp increase in the burden of sulphate between the 1950s and 1970s; but since 1980, the burden has dropped. Our climate model simulations show that the cooling contribution of aerosols offset the warming effect of increasing greenhouse gases over the midtwentieth century resulting in the expansion of the Arctic sea ice cover. These results challenge the perception that Arctic sea ice extent was unperturbed by human influence until the 1970s, suggesting instead that it exhibited earlier forced multidecadal variations, with implications for our understanding of impacts and adaptation in human and natural Arctic systems. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407790500028 |
WOS关键词 | GLOBAL CLIMATE ; TEMPERATURE ; VARIABILITY ; ATTRIBUTION ; PROJECTIONS ; ANOMALIES ; EXTENT ; CMIP5 |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28437 |
专题 | 气候变化 |
作者单位 | 1.Environm & Climate Change Canada, Canadian Ctr Climate Modelling & Anal, Victoria, BC, Canada; 2.Univ Alaska Fairbanks, Dept Atmospher Sci, Coll Nat Sci & Math, Fairbanks, AK USA; 3.Univ Alaska Fairbanks, Int Arctic Res Ctr, Fairbanks, AK USA |
推荐引用方式 GB/T 7714 | Gagne, Marie-Eve,Fyfe, John C.,Gillett, Nathan P.,et al. Aerosol-driven increase in Arctic sea ice over the middle of the twentieth century[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(14). |
APA | Gagne, Marie-Eve,Fyfe, John C.,Gillett, Nathan P.,Polyakov, Igor V.,&Flato, Gregory M..(2017).Aerosol-driven increase in Arctic sea ice over the middle of the twentieth century.GEOPHYSICAL RESEARCH LETTERS,44(14). |
MLA | Gagne, Marie-Eve,et al."Aerosol-driven increase in Arctic sea ice over the middle of the twentieth century".GEOPHYSICAL RESEARCH LETTERS 44.14(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论