Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017JD027377 |
Process-Based Model Evaluation Using Surface Energy Budget Observations in Central Greenland | |
Miller, Nathaniel B.1,2; Shupe, Matthew D.1,2; Lenaerts, Jan T. M.3; Kay, Jennifer E.1,3; de Boer, Gijs1,2; Bennartz, Ralf4,5 | |
2018-05-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:10页码:4777-4796 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Energy exchange at the Greenland ice sheet surface governs surface temperature variability, a factor critical for representing surface melt. Physical processes link driving forces to subsequent surface energy budget responses, including radiative, turbulent, and ground heat fluxes, and ultimately control surface temperature evolution. A reanalysis product (ERA-Interim, ERA-I), operational model (Climate Forecast System version 2, CFSv2), and climate model (Community Earth System Model, CESM) are evaluated using a comprehensive set of surface energy budget observations and process-based relationships obtained at Summit, Greenland. Simulated downwelling longwave radiation is underestimated, which is linked to a deficiency of liquid-bearing clouds. Lower than observed surface albedo, especially in ERA-I, compensates for summer deficiencies in downwelling longwave radiation. In winter, such deficiencies are compensated by an overestimation of the sensible heat flux. Process-based relationships convey that all three models underestimate the response of surface temperature to changes in radiative forcing, primarily due to an overactive ground heat flux response in ERA-I, turbulent heat fluxes in CFSv2, and sensible heat flux in CESM. Cross comparison of three distinct models indicates that the ground heat flux response for ERA-I, CFSv2, and CESM is too high, too low, and comparatively accurate, respectively, signifying the benefit of using an advanced representation of snow properties. Relatively small biases in CESM surface albedo suggest that advances in the representation of cloud microphysics result in more realistic radiative forcing. These results provide insight into model strengths and deficiencies, indicating the importance of representing physical processes when portraying cloud impacts on surface temperature variability. ns reveal the importance of representing radiative and thermal properties of the snowpack in models |
英文关键词 | Greenland surface energy budget model evaluation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435445600001 |
WOS关键词 | SEA-LEVEL RISE ; ICE-SHEET ; MASS-BALANCE ; CLOUD PROPERTIES ; ARCTIC SURFACE ; MELT EXTENT ; CLIMATE ; SYSTEM ; REANALYSIS ; SNOW |
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/32594 |
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, Boulder, CO 80305 USA; 3.Univ Colorado Boulder, Dept Atmospher & Ocean Sci, Boulder, CO USA; 4.Vanderbilt Univ, Dept Earth & Environm Sci, 221 Kirkland Hall, Nashville, TN 37235 USA; 5.UW Madison, Space Sci & Engn Ctr, Madison, WI USA |
推荐引用方式 GB/T 7714 | Miller, Nathaniel B.,Shupe, Matthew D.,Lenaerts, Jan T. M.,et al. Process-Based Model Evaluation Using Surface Energy Budget Observations in Central Greenland[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(10):4777-4796. |
APA | Miller, Nathaniel B.,Shupe, Matthew D.,Lenaerts, Jan T. M.,Kay, Jennifer E.,de Boer, Gijs,&Bennartz, Ralf.(2018).Process-Based Model Evaluation Using Surface Energy Budget Observations in Central Greenland.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(10),4777-4796. |
MLA | Miller, Nathaniel B.,et al."Process-Based Model Evaluation Using Surface Energy Budget Observations in Central Greenland".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.10(2018):4777-4796. |
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