气候变化领域集成服务门户(CCPortal): Global ocean heat content redistribution during the 1998–2012 Interdecadal Pacific Oscillation negative phase

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DOI	10.1007/s00382-018-4387-9
	Global ocean heat content redistribution during the 1998–2012 Interdecadal Pacific Oscillation negative phase
	Gastineau G.; Friedman A.R.; Khodri M.; Vialard J.
发表日期	2019
ISSN	0930-7575
起始页码	1187
结束页码	1208
卷号	53 期号:2020-01-02
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 4 × 1022 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°N and 40°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 (~ 50%), Indian (~ 30%) and Southern (~ 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°S in the Indian Ocean. Overall, OHC increases most in the Southern Ocean (~ 60% of global changes) and northern Pacific (~ 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. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Air–sea interactions; Decadal climate variability; Global warming; Ocean heat content; Pacific Ocean
语种	英语
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146223
作者单位	UMR LOCEAN, Sorbonne Université/CNRS/IRD/MNHN, IPSL, 4 place Jussieu, Paris, 75005, France; School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
推荐引用方式 GB/T 7714	Gastineau G.,Friedman A.R.,Khodri M.,等. Global ocean heat content redistribution during the 1998–2012 Interdecadal Pacific Oscillation negative phase[J],2019,53(2020-01-02).
APA	Gastineau G.,Friedman A.R.,Khodri M.,&Vialard J..(2019).Global ocean heat content redistribution during the 1998–2012 Interdecadal Pacific Oscillation negative phase.Climate Dynamics,53(2020-01-02).
MLA	Gastineau G.,et al."Global ocean heat content redistribution during the 1998–2012 Interdecadal Pacific Oscillation negative phase".Climate Dynamics 53.2020-01-02(2019).