Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071959 |
Clouds, warm air, and a climate cooling signal over the summer Arctic | |
Sedlar, Joseph1; Tjernstrom, Michael2 | |
2017-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden |
英文摘要 | While the atmospheric greenhouse effect always results in a warming at the surface, outgoing longwave radiation (OLR) to space always represents a cooling. During events of heat and moisture advection into the Arctic, increases in tropospheric temperature and moisture impact clouds, in turn impacting longwave (LW) radiation. State-of-the-art satellite measurements and atmospheric reanalysis consistently reveal an enhancement of summer Arctic monthly OLR cooling ranging 1.5-4Wm(-2) during months with anomalously high thermodynamic advection. This cooling anomaly is found to be of the same magnitude or slightly larger than associated downwelling LW surface warming anomalies. We identify a relationship between large-scale circulation variability and changing cloud properties permitting LW radiation at both the surface and top of the atmosphere to respond to variability in atmospheric thermodynamics. Driven by anomalous advection of warm air, the corresponding enhanced OLR cooling signal on monthly time scales represents an important buffer to regional Arctic warming. |
英文关键词 | Arctic thermodynamics advection radiation clouds |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395652600058 |
WOS关键词 | WATER-VAPOR ; ATMOSPHERE ; FEEDBACKS ; ATTRIBUTION ; REANALYSES ; PROFILES ; OCEAN ; MODIS |
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/27221 |
专题 | 气候变化 |
作者单位 | 1.Swedish Meteorol & Hydrol Inst, Norrkoping, Sweden; 2.Stockholm Univ, Dept Meteorol, Stockholm, Sweden |
推荐引用方式 GB/T 7714 | Sedlar, Joseph,Tjernstrom, Michael. Clouds, warm air, and a climate cooling signal over the summer Arctic[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(2). |
APA | Sedlar, Joseph,&Tjernstrom, Michael.(2017).Clouds, warm air, and a climate cooling signal over the summer Arctic.GEOPHYSICAL RESEARCH LETTERS,44(2). |
MLA | Sedlar, Joseph,et al."Clouds, warm air, and a climate cooling signal over the summer Arctic".GEOPHYSICAL RESEARCH LETTERS 44.2(2017). |
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