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DOI | 10.1029/2019GL083758 |
Antarctic Sea Ice Expansion, Driven by Internal Variability, in the Presence of Increasing Atmospheric CO2 | |
Singh, H. A.1; Polvani, L. M.2; Rasch, P. J.3 | |
2019-12-24 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | A number of physically based hypotheses have been proposed to explain the surprising expansion of Antarctic sea ice area (SIA) over the satellite era (1979 to 2015). Here, we use a fully coupled state-of-the-art global climate model to show that internal variability alone can produce such multidecadal periods of Antarctic SIA expansion even as atmospheric CO2 increases at observed rates and the planet warms. When our model is started from a relatively warm Southern Ocean state, Antarctic SIA sometimes (in one of three ensemble members) expands over multidecadal time scales at a rate comparable to that over the satellite era. SIA expansion occurs concurrently with rising atmospheric CO2 and warming global surface temperatures, and SIA trends by region and sector resemble those over the satellite era. Our results suggest that internal variability over long time scales in the Southern Ocean region may suffice to explain Antarctic SIA expansion over the satellite era. |
英文关键词 | Internal Variability Sea Ice Antarctica Southern Ocean Satellite Era Atmosphere-Ocean-Ice Interactions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000504065100001 |
WOS关键词 | SOUTHERN-OCEAN CONVECTION ; NATURAL VARIABILITY ; CLIMATE MODELS ; TRENDS |
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/225247 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Victoria, Sch Earth & Ocean Sci, Victoria, BC, Canada; 2.Columbia Univ, Dept Earth & Environm Sci, Dept Appl Phys & Appl Math, New York, NY USA; 3.US DOE, Atmospher Sci & Global Change Div, Pacific Northwest Natl Lab, Off Sci, Richland, WA USA |
推荐引用方式 GB/T 7714 | Singh, H. A.,Polvani, L. M.,Rasch, P. J.. Antarctic Sea Ice Expansion, Driven by Internal Variability, in the Presence of Increasing Atmospheric CO2[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Singh, H. A.,Polvani, L. M.,&Rasch, P. J..(2019).Antarctic Sea Ice Expansion, Driven by Internal Variability, in the Presence of Increasing Atmospheric CO2.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Singh, H. A.,et al."Antarctic Sea Ice Expansion, Driven by Internal Variability, in the Presence of Increasing Atmospheric CO2".GEOPHYSICAL RESEARCH LETTERS (2019). |
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