Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028919 |
Spatial Distribution of Melt Season Cloud Radiative Effects Over Greenland: Evaluating Satellite Observations, Reanalyses, and Model Simulations Against In Situ Measurements | |
Wang, Wenshan1; Zender, Charles S.1; van As, Dirk2; Miller, Nathaniel B.3,4 | |
2019-01-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:1页码:57-71 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Denmark |
英文摘要 | Arctic clouds can profoundly influence surface radiation and thus surface melt. Over Greenland, these cloud radiative effects (CRE) vary greatly with the diverse topography. To investigate the ability of assorted platforms to reproduce heterogeneous CRE, we evaluate CRE spatial distributions from a satellite product, reanalyses, and a global climate model against estimates from 21 automatic weather stations (AWS). Net CRE estimated from AWS generally decreases with elevation, forming a warm center distribution. CRE areal averages from the five large-scale data sets we analyze are all around 10W/m(2). Modern-Era Retrospective Analysis for Research and Applications version 2 (MERRA-2), ERA-Interim, and Clouds and the Earth's Radiant Energy System (CERES) CRE estimates agree with AWS and reproduce the warm center distribution. However, the National Center for Atmospheric Research Arctic System Reanalysis (ASR) and the Community Earth System Model Large ENSemble Community Project (LENS) show strong warming in the south and northwest, forming a warm L-shape distribution. Discrepancies are mainly caused by longwave CRE in the accumulation zone. MERRA-2, ERA-Interim, and CERES successfully reproduce cloud fraction and its dominant positive influence on longwave CRE in this region. On the other hand, longwave CRE from ASR and LENS correlates strongly with ice water path instead of with cloud fraction or liquid water path. Moreover, ASR overestimates cloud fraction and LENS underestimates liquid water path substantially, both with limited spatial variability. MERRA-2 best captures the observed interstation changes, captures most of the observed cloud-radiation physics, and largely reproduces both albedo and cloud properties. The warm center CRE spatial distribution indicates that clouds enhance surface melt in the higher accumulation zone and reduce surface melt in the lower ablation zone. U |
英文关键词 | cloud radiation Greenland automatic weather stations |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456689100004 |
WOS关键词 | ARCTIC CLOUD ; SURFACE ; ICE ; SUMMER ; FRACTION ; FLUXES ; UNCERTAINTIES ; ATMOSPHERE ; 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/32376 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 2.Geol Survey Denmark & Greenland GEUS, Copenhagen, Denmark; 3.Univ Colorado Boulder, Cooperat Inst Res Environm Sci, Boulder, CO USA; 4.NOAA, Earth Syst Res Lab, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Wang, Wenshan,Zender, Charles S.,van As, Dirk,et al. Spatial Distribution of Melt Season Cloud Radiative Effects Over Greenland: Evaluating Satellite Observations, Reanalyses, and Model Simulations Against In Situ Measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(1):57-71. |
APA | Wang, Wenshan,Zender, Charles S.,van As, Dirk,&Miller, Nathaniel B..(2019).Spatial Distribution of Melt Season Cloud Radiative Effects Over Greenland: Evaluating Satellite Observations, Reanalyses, and Model Simulations Against In Situ Measurements.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(1),57-71. |
MLA | Wang, Wenshan,et al."Spatial Distribution of Melt Season Cloud Radiative Effects Over Greenland: Evaluating Satellite Observations, Reanalyses, and Model Simulations Against In Situ Measurements".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.1(2019):57-71. |
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