Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0071.1 |
Cloud-Atmospheric Boundary Layer-Surface Interactions on the Greenland Ice Sheet during the July 2012 Extreme Melt Event | |
Solomon, Amy1,2; Shupe, Matthew D.1,2; Miller, Nathaniel B.1,2 | |
2017-05-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Regional model simulations of the 10-13 July 2012 extreme melt event over the Greenland Ice Sheet (GIS) are used to investigate how low-level liquid-bearing clouds impact surface energy fluxes, and therefore the energy available for melt. A sensitivity study in which the radiation code is modified so that cloud liquid and ice do not emit, absorb, or reflect radiation is used to identify cloud impacts beyond the cloud radiative effect. It is found that Arctic mixed-phase stratocumuli are not produced in the sensitivity experiment, highlighting that cloud radiative fluxes are required to maintain the clouds. A number of feedbacks are found that damp the warming effect of the clouds. Thin mixed-phase clouds increase the downward longwave fluxes by 100Wm (2), but upward daytime surface longwave fluxes increase by 20Wm (2) (60Wm (2) at night) and net shortwave fluxes decrease by 40Wm(-2) (partially due to a 0.05 increase in surface albedo), leaving only 40Wm(-2) available for melt. This 40Wm(-2) is distributed between the turbulent and conductive ground fluxes, so it is only at times of weak turbulent fluxes (i.e., at night or during melt) that this energy goes into the conductive ground flux, providing energy for melt. From these results it is concluded that it is the integrated impact of the clouds over the diurnal cycle (the preconditioning of the snowpack by the clouds at night) that made melt possible during this 3-day period. These findings are extended to understand the pattern of melt observed over the GIS. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399680500010 |
WOS关键词 | SEA-LEVEL RISE ; CLIMATE ; MICROPHYSICS ; PARAMETERIZATION ; IMPACT ; ALBEDO |
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/19893 |
专题 | 气候变化 |
作者单位 | 1.Univ Colorado Boulder, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 2.NOAA, Earth Syst Res Lab, Phys Sci Div, Boulder, CO 80305 USA |
推荐引用方式 GB/T 7714 | Solomon, Amy,Shupe, Matthew D.,Miller, Nathaniel B.. Cloud-Atmospheric Boundary Layer-Surface Interactions on the Greenland Ice Sheet during the July 2012 Extreme Melt Event[J]. JOURNAL OF CLIMATE,2017,30(9). |
APA | Solomon, Amy,Shupe, Matthew D.,&Miller, Nathaniel B..(2017).Cloud-Atmospheric Boundary Layer-Surface Interactions on the Greenland Ice Sheet during the July 2012 Extreme Melt Event.JOURNAL OF CLIMATE,30(9). |
MLA | Solomon, Amy,et al."Cloud-Atmospheric Boundary Layer-Surface Interactions on the Greenland Ice Sheet during the July 2012 Extreme Melt Event".JOURNAL OF CLIMATE 30.9(2017). |
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