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DOI | 10.1007/s00382-016-3447-2 |
Bjerknes compensation in the Bergen Climate Model | |
Outten, Stephen1,2; Esau, Igor1,2 | |
2017-10-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway |
英文摘要 | The meridional transport of heat is a critical component of the Earth's climate system. If the total heat transported by the climate system is approximately constant, then the anomalies of heat transported by the atmosphere and ocean should be approximately equal and opposite, a scenario now called Bjerknes compensation. This has previously been found in two coupled climate models, with both showing multi-decadal variability in the heat transports. This work identifies Bjerknes compensation in the Bergen Climate Model, adding to the understanding of the robust features of Bjerknes compensation in coupled climate models. The atmospheric and oceanic heat transports are investigated in the 600-year control run of a fully-coupled global climate model. The presence of Bjerknes compensation is confirmed by the strong anti-correlation and equal magnitude of the anomalies of these heat transports. The heat transport anomalies contain a signal of multi-decadal variability. Since natural variability in global heat transport could mask anthropogenic climate change signals, understanding Bjerknes compensation is of socio-economic importance. Using regression analysis the atmospheric and oceanic responses to the multi-decadal variability of the Bjerknes compensation signal are investigated. This highlights the importance of the marginal ice zones of the Greenland and Barents Seas as the critical location for coupling the atmosphere and ocean. During periods of increased heat transport in the ocean, these regions show decreased sea-ice, leading to increased fluxes and local temperatures, and giving rise to a thermal low-pressure center and a non-local high-pressure centre, thus changing the atmospheric flow on multi-decadal timescales. |
英文关键词 | Multi-decadal variability Bergen Climate Model Bjerknes compensation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410803300002 |
WOS关键词 | ENERGY TRANSPORTS ; ATLANTIC-OCEAN ; NORDIC SEAS ; VARIABILITY ; HEAT ; ATMOSPHERE ; RECONSTRUCTION |
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/35297 |
专题 | 气候变化 |
作者单位 | 1.Nansen Environm & Remote Sensing Ctr, Thormohlens Gate 47, N-5006 Bergen, Norway; 2.Bjerknes Ctr Climate Res, Thormohlens Gate 47, N-5006 Bergen, Norway |
推荐引用方式 GB/T 7714 | Outten, Stephen,Esau, Igor. Bjerknes compensation in the Bergen Climate Model[J]. CLIMATE DYNAMICS,2017,49. |
APA | Outten, Stephen,&Esau, Igor.(2017).Bjerknes compensation in the Bergen Climate Model.CLIMATE DYNAMICS,49. |
MLA | Outten, Stephen,et al."Bjerknes compensation in the Bergen Climate Model".CLIMATE DYNAMICS 49(2017). |
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