Observed Upper Deep Branch of the Pacific Meridional Overturning Circulation North of New Guinea

doi:10.1175/JPO-D-22-0180.1

IOCAS-IR > 海洋环流与波动重点实验室

	Observed Upper Deep Branch of the Pacific Meridional Overturning Circulation North of New Guinea
	Zhang, Hang 1,3; Wang, Jianing1,2,3 ; Wang, Fan1,2,3 ; Zhang, Zhixiang1,2,3 ; Ma, Qiang1,2,3
	2023-05-01
发表期刊	JOURNAL OF PHYSICAL OCEANOGRAPHY
ISSN	0022-3670
卷号	53 期号:5 页码:1375-1386
通讯作者	Wang, Jianing(wjn@qdio.ac.cn)
摘要	The deep channel north of New Guinea (NG) is the choke site for the upper deep branches of the Pacific meridional overturning circulation (U-PMOC). The U-PMOC is a crucial element of the ocean's climate and biogeochemi-cal systems. It carries the mixed water of the Upper Circumpolar Water and North Pacific Deep Water with a potential temperature over 1.2 degrees-2.2 degrees C. The pathway and volume transport of U-PMOC through the deep channel north of NG are revealed by mooring measurements from 2014 to 2019. Mean U-PMOC is located at 2000-3500 m with a velocity core at 2550 m and is directed eastward. The U-PMOC shows a strong seasonal variability with a direction reversal from June to September. The oceanic reanalysis product GLORYS12V1 well reproduces the observed U-PMOC and is thus used to es-timate the mean and standard deviation of U-PMOC's volume transport as 2.19 +/- 11.4 Sv (1 Sv = 106 m3 s-1) and to ex-plore the underlying dynamics of the U-PMOC. The seasonality of U-PMOC is induced by the vertical propagation of the Rossby energy through the upper ocean in the eastern Pacific to the deep ocean in the western Pacific. The mean eastward U-PMOC transport is forced by the zonal deep pressure gradient, which is mainly determined by the local upper-ocean processes above 500 m.
关键词	Pacific Ocean Mass fluxes transport Meridional overturning circulation Rossby waves In situ oceanic observations Annual variations
DOI	10.1175/JPO-D-22-0180.1
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; National Natural Science Foundation of China (NSFC)[91958204] ; National Natural Science Foundation of China (NSFC)[42222602] ; National Natural Science Foundation of China (NSFC)[42006003] ; National Natural Science Foundation of China (NSFC)[42106009] ; National Natural Science Foundation of China (NSFC)[42221005] ; National Natural Science Foundation of China (NSFC)[42090040] ; Science and Technology Innovation Project of Laoshan Laboratory[LSKJ202203100] ; Science and Technology Innovation Project of Laoshan Laboratory[LSKJ202202700] ; Youth Innovation Promotion Association CAS ; TS Scholar Program
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:000995813500002
出版者	AMER METEOROLOGICAL SOC
WOS关键词	WATER ; OCEAN ; FLOW ; TRANSPORT
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/183090
专题	海洋环流与波动重点实验室
通讯作者	Wang, Jianing
作者单位	1.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zhang, Hang,Wang, Jianing,Wang, Fan,et al. Observed Upper Deep Branch of the Pacific Meridional Overturning Circulation North of New Guinea[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2023,53(5):1375-1386.
APA	Zhang, Hang,Wang, Jianing,Wang, Fan,Zhang, Zhixiang,&Ma, Qiang.(2023).Observed Upper Deep Branch of the Pacific Meridional Overturning Circulation North of New Guinea.JOURNAL OF PHYSICAL OCEANOGRAPHY,53(5),1375-1386.
MLA	Zhang, Hang,et al."Observed Upper Deep Branch of the Pacific Meridional Overturning Circulation North of New Guinea".JOURNAL OF PHYSICAL OCEANOGRAPHY 53.5(2023):1375-1386.