Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD026443 |
An intercomparison and validation of satellite-based surface radiative energy flux estimates over the Arctic | |
Riihela, Aku1; Key, Jeffrey R.2; Meirink, Jan Fokke3; Munneke, Peter Kuipers4; Palo, Timo5; Karlsson, Karl-Goran6 | |
2017-05-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland; USA; Netherlands; Estonia; Sweden |
英文摘要 | Accurate determination of radiative energy fluxes over the Arctic is of crucial importance for understanding atmosphere-surface interactions, melt and refreezing cycles of the snow and ice cover, and the role of the Arctic in the global energy budget. Satellite-based estimates can provide comprehensive spatiotemporal coverage, but the accuracy and comparability of the existing data sets must be ascertained to facilitate their use. Here we compare radiative flux estimates from Clouds and the Earth's Radiant Energy System (CERES) Synoptic 1-degree (SYN1deg)/Energy Balanced and Filled, Global Energy and Water Cycle Experiment (GEWEX) surface energy budget, and our own experimental FluxNet / Satellite Application Facility on Climate Monitoring cLoud, Albedo and RAdiation (CLARA) data against in situ observations over Arctic sea ice and the Greenland Ice Sheet during summer of 2007. In general, CERES SYN1deg flux estimates agree best with in situ measurements, although with two particular limitations: (1) over sea ice the upwelling shortwave flux in CERES SYN1deg appears to be underestimated because of an underestimated surface albedo and (2) the CERES SYN1deg upwelling longwave flux over sea ice saturates during midsummer. The Advanced Very High Resolution Radiometer-based GEWEX and FluxNet-CLARA flux estimates generally show a larger range in retrieval errors relative to CERES, with contrasting tendencies relative to each other. The largest source of retrieval error in the FluxNet-CLARA downwelling shortwave flux is shown to be an overestimated cloud optical thickness. The results illustrate that satellite-based flux estimates over the Arctic are not yet homogeneous and that further efforts are necessary to investigate the differences in the surface and cloud properties which lead to disagreements in flux retrievals. Plain Language Summary The amounts of solar and thermal radiative energies toward and away from the Earth's surface over the Arctic are the main driver of, e.g., the annual melt and freezing cycle of ice and snow. In this paper, we investigate how state-of-the-art satellite-based data sets of these radiative energy fluxes agree, or disagree, with each other and reference measurements made in the Arctic Ocean and on the Greenland Ice Sheet. We found that different data sets have not only individual strengths but also individual weaknesses which should be improved upon to enable a cohesive investigation of the radiative energy balance at annual and decadal time scales. |
英文关键词 | Radiative fluxes Arctic Comparison Validation Satellite Remote Sensing |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402039000005 |
WOS关键词 | K-DISTRIBUTION METHOD ; SEA-ICE ; ATMOSPHERIC WINDOW ; BSRN MEASUREMENTS ; LONGWAVE FLUX ; SYSTEM CERES ; DATA SETS ; CLOUD ; CLIMATE ; 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/33322 |
专题 | 气候变化 |
作者单位 | 1.Finnish Meteorol Inst, Helsinki, Finland; 2.NOAA, Madison, WI USA; 3.Royal Netherlands Meteorol Inst, De Bilt, Netherlands; 4.Univ Utrecht, Inst Marine & Atmospher Res, Utrecht, Netherlands; 5.Univ Tartu, Tartu, Estonia; 6.Swedish Meteorol & Hydrol Inst, Norrkoping, Sweden |
推荐引用方式 GB/T 7714 | Riihela, Aku,Key, Jeffrey R.,Meirink, Jan Fokke,et al. An intercomparison and validation of satellite-based surface radiative energy flux estimates over the Arctic[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(9). |
APA | Riihela, Aku,Key, Jeffrey R.,Meirink, Jan Fokke,Munneke, Peter Kuipers,Palo, Timo,&Karlsson, Karl-Goran.(2017).An intercomparison and validation of satellite-based surface radiative energy flux estimates over the Arctic.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(9). |
MLA | Riihela, Aku,et al."An intercomparison and validation of satellite-based surface radiative energy flux estimates over the Arctic".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.9(2017). |
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