Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029142 |
Cloud Response to Arctic Sea Ice Loss and Implications for Future Feedback in the CESM1 Climate Model | |
Morrison, A. L.1,2; Kay, J. E.1,2; Frey, W. R.1,2; Chepfer, H.3,4; Guzman, R.3 | |
2019-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:2页码:1003-1020 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France |
英文摘要 | Over the next century, the Arctic is projected to become seasonally sea ice-free. Assessing feedback between clouds and sea ice as the Arctic loses sea ice cover is important because of clouds' radiative impacts on the Arctic surface. Here we investigate present-day and future Arctic cloud-sea ice relationships in a fully coupled global climate model forced by business-as-usual increases in greenhouse gases. Model evaluation using a lidar simulator and lidar satellite observations shows agreement between present-day modeled and observed cloud-sea ice relationships. Summer clouds are unaffected by sea ice variability, but more fall clouds occur over open water than over sea ice. Because the model reproduces observed cloud-sea ice relationships and their underlying physical mechanisms, the model is used to assess future Arctic cloud-sea ice feedback. With future sea ice loss, modeled summer cloud fraction, vertical structure, and optical depth barely change. Future sea ice loss does not influence summer clouds, but summer sea ice loss does drive fall cloud changes by increasing the amount of sunlight absorbed by the summertime ocean and the latent and sensible heat released into the atmosphere when the Sun sets in fall. The future fall boundary layer deepens and clouds become more opaque over newly open water. The future nonsummer longwave cloud radiative effect strengthens as nonsummer cloud cover increases. In summary, we find no evidence for a summer cloud-sea ice feedback but strong evidence for a positive cloud-sea ice feedback that emerges during nonsummer months as the Arctic warms and sea ice disappears. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458845300032 |
WOS关键词 | SURFACE ALBEDO ; ATMOSPHERE ; AMPLIFICATION ; SIMULATIONS ; SENSITIVITY ; RADIATION ; CMIP5 ; CYCLE |
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/34071 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado, Atmospher & Ocean Sci, Boulder, CO 80309 USA; 2.Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 3.Ecole Polytech, CNRS, LMD IPSL, Palaiseau, France; 4.Univ Paris 06, LMD IPSL, Paris, France |
推荐引用方式 GB/T 7714 | Morrison, A. L.,Kay, J. E.,Frey, W. R.,et al. Cloud Response to Arctic Sea Ice Loss and Implications for Future Feedback in the CESM1 Climate Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(2):1003-1020. |
APA | Morrison, A. L.,Kay, J. E.,Frey, W. R.,Chepfer, H.,&Guzman, R..(2019).Cloud Response to Arctic Sea Ice Loss and Implications for Future Feedback in the CESM1 Climate Model.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(2),1003-1020. |
MLA | Morrison, A. L.,et al."Cloud Response to Arctic Sea Ice Loss and Implications for Future Feedback in the CESM1 Climate Model".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.2(2019):1003-1020. |
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