The seasonal variation of the North Pacific Meridional Overturning Circulation heat transport

IOCAS-IR

	The seasonal variation of the North Pacific Meridional Overturning Circulation heat transport
	LIU Hongwei ; ZHANG Qilong ; PANG Chongguang ; DUAN Yongliang; PXU Jianping
发表期刊	Journal of Oceanology and Limnology
ISSN	2096-5508
	2019-03-15
出版年	2019
卷号	v.37 期号:02 页码:51-61
文献类型	CNKI期刊论文
摘要	Based on the 50-year Simple Ocean Data Assimilation(SODA) reanalysis data, we investigated the basic characteristics and seasonal changes of the meridional heat transport carried by the North Pacific Meridional Overturning Circulation. And we also examined the dynamical and thermodynamic mechanisms responsible for these heat transport variability at the seasonal time scale. Among four cells, the tropical cell(TC) is strongest with a northward heat transport(NHT) of(1.75±0.30) PW(1 PW=1.0×10 15 W) and a southward heat transport(SHT) of(-1.69±0.55) PW, the subtropical cell(STC) is second with a NHT of(0.71±0.65) PW and SHT of(-0.63±0.53) PW, the deep tropical cell(DTC) is third with a NHT of(0.18±0.03) PW and SHT of(-0.18±0.11) PW, while the subpolar cell(SPC) is weakest with a NHT of(0.09±0.05) PW and SHT of(-0.07±0.09) PW. These four cells all have dif ferent seasonal changes in their NHT and SHT. Of all, the TC has stronger change in its SHT than in its NHT, so do both the DTC and SPC,but the seasonal change in the STC SHT is weaker than that in its NHT. Therefore, their dynamical and thermodynamic mechanisms are dif ferent each other. The local zonal wind stress and net surface heat flux are mainly responsible for the seasonal changes in the TC and STC NHTs and SPC SHT, while the local thermocline circulations and sea temperature are primarily responsible for the seasonal changes of the TC,STC and DTC SHTs and SPC NHT.
关键词	meridional overturning circulation heat transport North Pacific seasonal variation
CNKI专辑号	A;
CNKI专辑名称	基础科学;
CNKI专题号	A009;A010;
CNKI专题名称	气象学;海洋学;
分类号	P731.27;P732.6
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	Supported by the National Natural Science Foundation of China(Nos.41406012,41576060) ; the Open Fund of State Key Laboratory of Satellite Ocean Environment Dynamics(Second Institute of Oceanography)(No.SOED1613) ; the Open Fund of Key Laboratory of Global Change and Marine-Atmospheric Chemistry,State Oceanic Administration,China(No.GCMAC1501) ; the NSFC-Shandong Joint Fund for Marine Science Research Centers(No.U1406401)
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/188613
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofOceanCirculationandWaves,InstituteofOceanology,ChineseAcademyofSciencesandQingdaoNationalLaboratoryforMarineScienceandTechnology 2.StateKeyLaboratoryofSatelliteOceanEnvironmentDynamics,MNR 3.CenterforOceanMega-Science,ChineseAcademyofSciences 4.CenterforOceanandClimateResearch,FirstInstituteofOceanography,MNR 5.LaboratoryforRegionalOceanographyandNumericalModeling,QingdaoNationalLaboratoryforMarineScienceandTechnology
推荐引用方式 GB/T 7714	LIU Hongwei,ZHANG Qilong,PANG Chongguang,et al. The seasonal variation of the North Pacific Meridional Overturning Circulation heat transport. 2019.