| DOI: | 10.1007/s00382-014-2339-6
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| Scopus记录号: | 2-s2.0-84921938375
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| 论文题名: | Diapycnal heat flux and mixed layer heat budget within the Atlantic Cold Tongue |
| 作者: | Hummels R.; Dengler M.; Brandt P.; Schlundt M.
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| 刊名: | Climate Dynamics
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| ISSN: | 9307575
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| 出版年: | 2014
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| 卷: | 43, 期:11 | | 起始页码: | 3179
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| 结束页码: | 3199
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| 语种: | 英语
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| 英文关键词: | Atlantic Cold Tongue region
; Diapycnal heat flux
; Microstructure observations
; Mixed layer heat budget
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| 英文摘要: | Sea surface temperatures (SSTs) in the eastern tropical Atlantic are crucial for climate variability within the tropical belt. Despite this importance, state-of-the-art climate models show a large SST warm bias in this region. Knowledge about the seasonal mixed layer (ML) heat budget is a prerequisite for understanding SST mean state and its variability. Within this study all contributions to the seasonal ML heat budget are estimated at four locations within the Atlantic cold tongue (ACT) that are representative for the western (0°N, 23°W), central (0°N, 10°W) and eastern (0°N, 0°E) equatorial as well as the southern (10°S, 10°W) ACT. To estimate the contribution of the diapycnal heat flux due to turbulence an extensive data set of microstructure observations collected during ten research cruises between 2005 and 2012 is analyzed. The results for the equatorial ACT indicate that with the inclusion of the diapycnal heat flux the seasonal ML heat budget is balanced. Within the equatorial region, the diapycnal heat flux is essential for the development of the ACT. It dominates over all other cooling terms in the central and eastern equatorial ACT, while it is of similar size as the zonal advection in the western equatorial ACT. In contrast, the SST evolution in the southern ACT region can be explained entirely by air-sea heat fluxes. © 2014, The Author(s). |
| 资助项目: | DFG, Deutsche Forschungsgemeinschaft
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/54623
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| Appears in Collections: | 过去全球变化的重建
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作者单位: | GEOMAR Helmholtz Centre for Ocean Research, Düsternbrooker Weg 20, Kiel, Germany
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| Recommended Citation: | |
Hummels R.,Dengler M.,Brandt P.,et al. Diapycnal heat flux and mixed layer heat budget within the Atlantic Cold Tongue[J]. Climate Dynamics,2014-01-01,43(11)
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