Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0321.1 |
Nudging the Arctic Ocean to Quantify Sea Ice Feedbacks | |
Dekker, Evelien1,2; Bintanja, Richard3,4; Severijns, Camiel3 | |
2019-04-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:8页码:2381-2395 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; Netherlands |
英文摘要 | With Arctic summer sea ice potentially disappearing halfway through this century, the surface albedo and insulating effects of Arctic sea ice will decrease considerably. The ongoing Arctic sea ice retreat also affects the strength of the Planck, lapse rate, cloud, and surface albedo feedbacks together with changes in the heat exchange between the ocean and the atmosphere, but their combined effect on climate sensitivity has not been quantified. This study presents an estimate of all Arctic sea ice related climate feedbacks combined. We use a new method to keep Arctic sea ice at its present-day (PD) distribution under a changing climate in a 50-yr CO2 doubling simulation, using a fully coupled global climate model (EC-Earth, version 2.3). We nudge the Arctic Ocean to the (monthly dependent) year 2000 mean temperature and minimum salinity fields on a mask representing PD sea ice cover. We are able to preserve about 95% of the PD mean March and 77% of the September PD Arctic sea ice extent by applying this method. Using simulations with and without nudging, we estimate the climate response associated with Arctic sea ice changes. The Arctic sea ice feedback globally equals 0.28 +/- 0.15 W m(-2) K-1. The total sea ice feedback thus amplifies the climate response for a doubling of CO2, in line with earlier findings. Our estimate of the Arctic sea ice feedback agrees reasonably well with earlier CMIP5 global climate feedback estimates and shows that the Arctic sea ice exerts a considerable effect on the Arctic and global climate sensitivity. |
英文关键词 | Arctic Sea ice Feedback Climate sensitivity Feedback Climate models |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463886900001 |
WOS关键词 | CLIMATE MODEL SENSITIVITY ; POLAR AMPLIFICATION ; DISCREPANCY ; DECLINE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/182150 |
专题 | 气候变化 |
作者单位 | 1.Stockholm Univ, Dept Meteorol, Stockholm, Sweden; 2.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 3.Royal Netherlands Meteorol Inst KNMI, De Bilt, Netherlands; 4.Univ Groningen, Energy & Sustainabil Res Inst Groningen, Groningen, Netherlands |
推荐引用方式 GB/T 7714 | Dekker, Evelien,Bintanja, Richard,Severijns, Camiel. Nudging the Arctic Ocean to Quantify Sea Ice Feedbacks[J]. JOURNAL OF CLIMATE,2019,32(8):2381-2395. |
APA | Dekker, Evelien,Bintanja, Richard,&Severijns, Camiel.(2019).Nudging the Arctic Ocean to Quantify Sea Ice Feedbacks.JOURNAL OF CLIMATE,32(8),2381-2395. |
MLA | Dekker, Evelien,et al."Nudging the Arctic Ocean to Quantify Sea Ice Feedbacks".JOURNAL OF CLIMATE 32.8(2019):2381-2395. |
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