DOI: 10.1175/JCLI-D-14-00550.1
Scopus记录号: 2-s2.0-84943654118
论文题名: Vertical redistribution of oceanic heat content
作者: Liang X. ; Wunsch C. ; Heimbach P. ; Forget G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 9 起始页码: 3821
结束页码: 3833
语种: 英语
Scopus关键词: Advection
; Carbon
; Climate change
; Global warming
; Heat exchangers
; Heat flux
; Heat transfer
; Reservoirs (water)
; Data assimilation
; Ocean dynamics
; Oceanic heat contents
; Oceanic variabilities
; Temporal variation
; Thermal equilibriums
; Transport
; Vertical heat fluxes
; Oceanography
; advection
; air-sea interaction
; atmosphere-ocean coupling
; climate change
; heat transfer
; latent heat flux
; vertical distribution
英文摘要: Estimated values of recent oceanic heat uptake are on the order of a few tenths of a W m-2, and are a very small residual of air-sea exchanges, with annual average regional magnitudes of hundreds of W m-2. Using a dynamically consistent state estimate, the redistribution of heat within the ocean is calculated over a 20-yr period. The 20-yr mean vertical heat flux shows strong variations in both the lateral and vertical directions, consistent with the ocean being a dynamically active and spatially complex heat exchanger. Between mixing and advection, the two processes determining the vertical heat transport in the deep ocean, advection plays a more important role in setting the spatial patterns of vertical heat exchange and its temporal variations. The global integral of vertical heat flux shows an upward heat transport in the deep ocean, suggesting a cooling trend in the deep ocean. These results support an inference that the near-surface thermal properties of the ocean are a consequence, at least in part, of internal redistributions of heat, some of which must reflect water that has undergone long trajectories since last exposure to the atmosphere. The small residual heat exchange with the atmosphere today is unlikely to represent the interaction with an ocean that was in thermal equilibrium at the start of global warming. An analogy is drawn with carbon-14 "reservoir ages," which range from over hundreds to a thousand years. © 2015 American Meteorological Society. 资助项目: NOAA, National Oceanic and Atmospheric Administration
; NSF, National Oceanic and Atmospheric Administration
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50775
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States
Recommended Citation:
Liang X.,Wunsch C.,Heimbach P.,et al. Vertical redistribution of oceanic heat content[J]. Journal of Climate,2015-01-01,28(9)