Variation of Indo-Pacific upper ocean heat content during 2001-2012 revealed by Argo

doi:10.1007/s13131-015-0664-1

	Variation of Indo-Pacific upper ocean heat content during 2001-2012 revealed by Argo
	Wu Xiaofen 1; Liu Zenghong 1; Liao Guanghong 1; Wu Lingjuan 2
刊名	ACTA OCEANOLOGICA SINICA
	2015-05
卷号	34 期号:5 页码:29-38
关键词	ocean heat content temperature and salinity profiles wind forcing Argo Indo-Pacific Ocean
ISSN号	0253-505X
DOI	10.1007/s13131-015-0664-1
英文摘要	Understanding of the temporal variation of oceanic heat content (OHC) is of fundamental importance to the prediction of climate change and associated global meteorological phenomena. However, OHC characteristics in the Pacific and Indian oceans are not well understood. Based on in situ ocean temperature and salinity profiles mainly from the Argo program, we estimated the upper layer (0-750 m) OHC in the Indo-Pacific Ocean (40 degrees S-40 degrees N, 30 degrees E-80 degrees W). Spatial and temporal variability of OHC and its likely physical mechanisms are also analyzed. Climatic distributions of upper-layer OHC in the Indian and Pacific oceans have a similar saddle pattern in the subtropics, and the highest OHC value was in the northern Arabian Sea. However, OHC variabilities in the two oceans were different. OHC in the Pacific has an east-west see-saw pattern, which does not appear in the Indian Ocean. In the Indian Ocean, the largest change was around 10 degrees S. The most interesting phenomenon is that, there was a long-term shift of OHC in the Indo-Pacific Ocean during 2001-2012. Such variation coincided with modulation of subsurface temperature/salinity. During 2001-2007, there was subsurface cooling (freshening) nearly the entire upper 400 m layer in the western Pacific and warming (salting) in the eastern Pacific. During 2008-2012, the thermocline deepened in the western Pacific but shoaled in the east. In the Indian Ocean, there was only cooling (upper 150 m only) and freshening (almost the entire upper 400 m) during 2001-2007. The thermocline deepened during 2008-2012 in the Indian Ocean. Such change appeared from the equator to off the equator and even to the subtropics (about 20 degrees N/S) in the two oceans. This long-term change of subsurface temperature/salinity may have been caused by change of the wind field over the two oceans during 2001-2012, in turn modifying OHC.
资助项目	National Natural Science Foundation of China[41206022] ; National Natural Science Foundation of China[41406022]
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000355061700004
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3676]
专题	自然资源部第一海洋研究所
作者单位	1.State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China; 2.State Ocean Adm, North China Sea Marine Forecasting Ctr, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wu Xiaofen,Liu Zenghong,Liao Guanghong,et al. Variation of Indo-Pacific upper ocean heat content during 2001-2012 revealed by Argo[J]. ACTA OCEANOLOGICA SINICA,2015,34(5):29-38.
APA	Wu Xiaofen,Liu Zenghong,Liao Guanghong,&Wu Lingjuan.(2015).Variation of Indo-Pacific upper ocean heat content during 2001-2012 revealed by Argo.ACTA OCEANOLOGICA SINICA,34(5),29-38.
MLA	Wu Xiaofen,et al."Variation of Indo-Pacific upper ocean heat content during 2001-2012 revealed by Argo".ACTA OCEANOLOGICA SINICA 34.5(2015):29-38.