DOI: 10.1175/JCLI-D-17-0452.1
Scopus记录号: 2-s2.0-85049753183
论文题名: The role of individual surface flux components in the passive and active ocean heat uptake
作者: Garuba O.A. ; Klingera B.A.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 15 起始页码: 6157
结束页码: 6173
语种: 英语
英文关键词: Climate change
; Fluxes
; Ocean circulation
; Ocean models
; Tracers
Scopus关键词: Carbon dioxide
; Climate change
; Climate models
; Fluxes
; Heat flux
; Heat losses
; Radioactive tracers
; Surface measurement
; Tropics
; Water
; Atlantic meridional overturning circulations
; Circulation changes
; Ocean circulation
; Ocean heat uptake
; Ocean model
; Southern Hemisphere
; Surface heat fluxes
; Wind perturbations
; Oceanography
; air-sea interaction
; carbon dioxide
; climate change
; gyre
; heat flux
; overturn
; Southern Hemisphere
; surface flux
; tracer
英文摘要: Surface flux perturbations (heat, freshwater, and wind) due to an increase of atmospheric CO2 cause significant intermodel spread in ocean heat uptake; however, the mechanism underlying their impact is not very well understood. Here, we use ocean model experiments to isolate the impact of each perturbation on the ocean heat uptake components, focusing on surface heat flux anomalies caused directly by atmospheric CO2 increase (passive) and indirectly by ocean circulation change (active). Surface heat flux perturbations cause the passive heat uptake, while all the surface flux perturbations influence ocean heat uptake through the active component. While model results have implied that the active component increases ocean heat uptake because of the weakening of the Atlantic meridional overturning circulation (AMOC), we find that it depends more on the shallow circulation change patterns. Surface heat flux perturbation causes most of the AMOC weakening, yet it causes a net global active heat loss (12% of the total uptake), which occurs because the active heat loss in the tropical Pacific through the subtropical cell weakening is greater than the active heat gain in the subpolar Atlantic through AMOC weakening. Freshwater perturbation weakens the AMOC a little more, but increases the subpolar Atlantic heat uptake a great deal through a large weakening of the subpolar gyre, thereby causing a large global active heat gain (34% of the total uptake). Wind perturbation also causes an active heat loss largely through the poleward shift of the Southern Hemisphere subtropical cells. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111418
Appears in Collections: 气候减缓与适应
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作者单位: Pacific Northwest National Laboratory, Richland, WA, United States; George Mason University, Fairfax, VA, United States
Recommended Citation:
Garuba O.A.,Klingera B.A.. The role of individual surface flux components in the passive and active ocean heat uptake[J]. Journal of Climate,2018-01-01,31(15)