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DOI | 10.1175/JCLI-D-19-0233.1 |
An Improved Estimate of the Coupled Arctic Energy Budget | |
Mayer, Michael1,2; Tietsche, Steffen1; Haimberger, Leopold2; Tsubouchi, Takamasa3; Mayer, Johannes2; Zuo, Hao1 | |
2019-11-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:22页码:7915-7934 |
文章类型 | Article |
语种 | 英语 |
国家 | England; Austria; Norway |
英文摘要 | This study combines state-of-the-art reanalyses such as the fifth-generation European Re-Analysis (ERA5) and the Ocean Reanalysis System 5 (ORAS5) with novel observational products to present an updated estimate of the coupled atmosphere-ocean-sea ice Arctic energy budget, including flux and storage terms covering 2001-17. Observational products provide independent estimates of crucial budget terms, including oceanic heat transport from unique mooring-derived data, radiative fluxes from satellites, and sea ice volume from merged satellite data. Results show that the time averages of independent estimates of radiative, atmospheric, and oceanic energy fluxes into the Arctic Ocean domain are remarkably consistent in the sense that their sum closely matches the observed rate of regional long-term oceanic heat accumulation of similar to 1 W m(-2). Atmospheric and oceanic heat transports are found to be stronger compared to earlier assessments (similar to 100 and similar to 16 W m(-2), respectively). Data inconsistencies are larger when considering the mean annual cycle of the coupled energy budget, with RMS values of the monthly budget residual between 7 and 15 W m(-2), depending on the employed datasets. This nevertheless represents an average reduction of similar to 72% of the residual compared to earlier work and demonstrates the progress made in data quality and diagnostic techniques. Finally, the budget residual is eliminated using a variational approach to provide a best estimate of the mean annual cycle. The largest remaining sources of uncertainty are ocean heat content and latent heat associated with sea ice melt and freeze, which both suffer from the lack of observational constraints. More ocean in situ observations and reliable sea ice thickness observations and their routinely assimilation into reanalyses are needed to further reduce uncertainty. |
英文关键词 | Atmosphere Ocean Arctic Energy transport Climatology Energy budget balance |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000492863100001 |
WOS关键词 | SEA-ICE THICKNESS ; SYSTEM CERES ; OCEAN ; ATMOSPHERE ; ASSIMILATION ; CRYOSAT-2 ; HEAT ; TRANSPORTS ; CLOUDS ; WATER |
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/188126 |
专题 | 气候变化 |
作者单位 | 1.European Ctr Medium Range Weather Forecasts, Reading, Berks, England; 2.Univ Vienna, Dept Meteorol & Geophys, Vienna, Austria; 3.Univ Bergen, Geophys Inst, Bergen, Norway |
推荐引用方式 GB/T 7714 | Mayer, Michael,Tietsche, Steffen,Haimberger, Leopold,et al. An Improved Estimate of the Coupled Arctic Energy Budget[J]. JOURNAL OF CLIMATE,2019,32(22):7915-7934. |
APA | Mayer, Michael,Tietsche, Steffen,Haimberger, Leopold,Tsubouchi, Takamasa,Mayer, Johannes,&Zuo, Hao.(2019).An Improved Estimate of the Coupled Arctic Energy Budget.JOURNAL OF CLIMATE,32(22),7915-7934. |
MLA | Mayer, Michael,et al."An Improved Estimate of the Coupled Arctic Energy Budget".JOURNAL OF CLIMATE 32.22(2019):7915-7934. |
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