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TAN Wei,HUANG Ruixin,WANG Weiqiang,WANG Xin. 2015. Zonal overturning circulation and heat flux induced by heaving modes in the world oceans. Acta Oceanologica Sinica, 34(11):80-91
Zonal overturning circulation and heat flux induced by heaving modes in the world oceans
世界大洋中绝热运动导致的纬向翻转环流和纬向热输送
Received:May 08, 2015  Revised:July 14, 2015
DOI:10.1007/s13131-015-0751-3
Key words:adiabatic motions  heaving  wind-driven circulation  zonal overturning circulation  zonal heat flux
中文关键词:  绝热运动  风生环流  纬向翻转环流  纬向热输送
基金项目:The CAS/SAFEA International Partnership Program for Creative Research Teams of Chinese Academy of Sciences; the National Natural Science Foundation of China under contract Nos 41422601, 41376024 and 41376025.
Author NameAffiliationE-mail
TAN Wei Hohai University, Nanjing 210098, China  
HUANG Ruixin State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA 
rhuang@whoi.edu 
WANG Weiqiang State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China  
WANG Xin State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China  
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Abstract:
      Zonal overturning circulation (ZOC) and its associated zonal heat flux (ZHF) are important components of the oceanic circulation and climate system, although these conceptions have not received adequate attentions. Heaving induced by inter-annual and decadal wind stress perturbations can give rise to anomalous ZOC and ZHF. Based on a simple reduced gravity model, the anomalous ZOC and ZHF induced by idealized heaving modes in the world oceans are studied. For example, in a Pacific-like model basin intensified equatorial easterly on decadal time scales can lead to a negative ZOC with a non-negligible magnitude (-0.3×106 m3/s) and a considerable westward ZHF with an amplitude of -11.2 TW. Thus, anomalous ZOC and ZHF may consist of a major part of climate signals on decadal time scales and thus play an important role in the oceanic circulation and climate change.
中文摘要:
      纬向翻转和纬向热输送是大洋环流和气候系统的重要环节,但是这两个概念目前尚未广泛应用.年际和年代际风应力的变化所导致的heaving(绝热运动)可以形成异常的纬向翻转和纬向热输送.本文采用一个简单的约化重力模式研究世界大洋中heaving所形成的异常纬向翻转和纬向热输送.例如,年代际赤道东风应力的加强可以产生负的纬向翻转(-0.3×106 m3/s)和相应西向的纬向热输送(-11.2 TW).可见,heaving形成的纬向翻转和纬向热输送异常在大洋环流和气候变化中能够起重要的作用.
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