| DOI: | 10.1175/JCLI-D-15-0630.1
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| Scopus记录号: | 2-s2.0-84987959393
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| 论文题名: | Zonal variations in the Southern Ocean heat budget |
| 作者: | Tamsitt V.; Talley L.D.; Mazloff M.R.; Cerovecki I.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2016
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| 卷: | 29, 期:18 | | 起始页码: | 6563
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| 结束页码: | 6579
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| 语种: | 英语
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| Scopus关键词: | Advection
; Atmospheric structure
; Atmospheric thermodynamics
; Heat flux
; Heat losses
; Heat transfer
; Ocean currents
; Oceanography
; Atmosphere-ocean interactions
; Ekman pumping/transport
; Geographic location
; Heat budgets/fluxes
; Meridional overturning circulations
; Ocean dynamics
; Southern ocean
; Budget control
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| 英文摘要: | The spatial structure of the upper ocean heat budget in the Antarctic Circumpolar Current (ACC) is investigated using the 1/6°, data-assimilating Southern Ocean State Estimate (SOSE) for 2005-10. The ACC circumpolar integrated budget shows that 0.27 PW of ocean heat gain from the atmosphere and 0.38 PW heat gain from divergence of geostrophic heat transport are balanced by -0.58 PW cooling by divergence of Ekman heat transport and -0.09 PW divergence of vertical heat transport. However, this circumpolar integrated balance obscures important zonal variations in the heat budget. The air-sea heat flux shows a zonally asymmetric pattern of ocean heat gain in the Indian and Atlantic sectors and ocean heat loss in the Pacific sector of the ACC. In the Atlantic and Indian sectors of the ACC, the surface ocean heat gain is primarily balanced by divergence of equatorward Ekman heat transport that cools the upper ocean. In the Pacific sector, surface ocean heat loss and cooling due to divergence of Ekman heat transport are balanced by warming due to divergence of geostrophic heat advection, which is similar to the dominant heat balance in the subtropical Agulhas Return Current. The divergence of horizontal and vertical eddy advection of heat is important for warming the upper ocean close to major topographic features, while the divergence of mean vertical heat advection is a weak cooling term. The results herein show that topographic steering and zonal asymmetry in air-sea exchange lead to substantial zonal asymmetries in the heat budget, which is important for understanding the upper cell of the overturning circulation. © 2016 American Meteorological Society. |
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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/50031
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Scripps Institution of Oceanography, La Jolla, CA, United States
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| Recommended Citation: | |
Tamsitt V.,Talley L.D.,Mazloff M.R.,et al. Zonal variations in the Southern Ocean heat budget[J]. Journal of Climate,2016-01-01,29(18)
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