globalchange  > 气候减缓与适应
DOI: 10.1007/s00382-018-4387-9
WOS记录号: WOS:000471722400071
论文题名:
Global ocean heat content redistribution during the 1998-2012 Interdecadal Pacific Oscillation negative phase
作者: Gastineau, Guillaume1; Friedman, Andrew R.1,2; Khodri, Myriam1; Vialard, Jerome1
通讯作者: Gastineau, Guillaume
刊名: CLIMATE DYNAMICS
ISSN: 0930-7575
EISSN: 1432-0894
出版年: 2019
卷: 53, 期:1-2, 页码:1187-1208
语种: 英语
英文关键词: Decadal climate variability ; Pacific Ocean ; Global warming ; Ocean heat content ; Air-sea interactions
WOS关键词: SEA-LEVEL ; TROPICAL PACIFIC ; SURFACE-TEMPERATURE ; DECADAL VARIABILITY ; NORTH-ATLANTIC ; HIATUS ; CMIP5 ; CIRCULATION ; MODEL ; ENSO
WOS学科分类: Meteorology & Atmospheric Sciences
WOS研究方向: Meteorology & Atmospheric Sciences
英文摘要:

Previous studies have linked the slowdown in global surface temperature warming during the 1998-2012 period to a negative Interdecadal Pacific Oscillation (IPO) phase. Here, we investigate the changes in ocean heat content (OHC) during this period. We compare two ensembles of coupled model experiments with either zero or observed prescribed tropical Pacific wind stress interannual anomalies. This successfully constrains the global surface temperature, sea level pressure and OHC patterns associated with the IPO phase transition around 1998. The negative IPO phase (1998-2012) is associated with a global ocean heat redistribution. The anomalously cold tropical Pacific Ocean leads to an increased oceanic uptake in this region, and a global OHC increase of 4x10(22) J. The cold equatorial Pacific also forces mid-latitude wind changes through atmospheric teleconnections, leading to an enhanced wind-driven heat transport convergence at 40 degrees N and 40 degrees S. Enhanced Pacific easterlies also yield an enhanced heat transport to the Indian Ocean via the Indonesian throughflow. As a result, the anomalous Pacific heat uptake is entirely exported towards the North Pacific (similar to 50%), Indian (similar to 30%) and Southern (similar to 20%) Oceans. A significant fraction of this heat is released back to the atmosphere in the North Pacific and Indian basins, and transported across 31 degrees S in the Indian Ocean. Overall, OHC increases most in the Southern Ocean (similar to 60% of global changes) and northern Pacific (similar to 40%), with negligible changes in the Indian and Atlantic basins. These results point to the major importance of oceanic circulation in re-distributing the Pacific heat uptake globally during negative IPO phases.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/125250
Appears in Collections:气候减缓与适应

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作者单位: 1.Sorbonne Univ, UMR LOCEAN, CNRS, IRD,MNHN,IPSL, 4 Pl Jussieu, F-75005 Paris, France
2.Univ Edinburgh, Sch Geosci, Edinburgh, Midlothian, Scotland

Recommended Citation:
Gastineau, Guillaume,Friedman, Andrew R.,Khodri, Myriam,et al. Global ocean heat content redistribution during the 1998-2012 Interdecadal Pacific Oscillation negative phase[J]. CLIMATE DYNAMICS,2019-01-01,53(1-2):1187-1208
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