DOI: 10.1007/s00382-014-2380-5
Scopus记录号: 2-s2.0-84925482110
论文题名: Decomposing the meridional heat transport in the climate system
作者: Yang H. ; Li Q. ; Wang K. ; Sun Y. ; Sun D.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2015
卷: 44, 期: 2017-09-10 起始页码: 2751
结束页码: 2768
语种: 英语
英文关键词: Atmospheric heat transport
; Coupled climate model
; Decomposition
; Meridional heat transport
; Oceanic heat transport
英文摘要: The meridional heat transport (MHT) in the climate system is investigated using a state-of-the-art coupled climate model (CESM1.0). This work decomposes the MHT and studies their physics in detail. The meridional ocean heat transport (OHT) can be decomposed into the contributions from the Euler mean circulation, bolus circulation, sub-mesoscale circulation and dissipation. The Euler mean heat transport dominates the total OHT in most latitudes, except that in the Southern Ocean (40–50°S) where the OHT is determined by the eddy-induced circulation and dissipation. In the Indo-Pacific the OHT is fulfilled by the wind-driven circulation, which dominates the total global OHT in the tropics. In the Atlantic the OHT is carried by both the wind-driven circulation and the thermohaline circulation, and the latter dominates the total OHT in the mid-high latitudes. The meridional atmosphere heat transport consists of the dry static energy (DSE) and latent energy (LE) transport. In the tropics the LE transport is equatorward and compensates partially the poleward DSE transport. In the extratropics, the LE and DSE are poleward and reinforce one another, both of which are dominated by the eddy components. The LE transport can be considered as the “joint air–sea mode” since the ocean controls the moisture supply. It can be also precisely obtained from the evaporation minus precipitation over the ocean and thus this work quantifies the individual ocean basin contributions to the LE transport. © 2014, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54216
Appears in Collections: 过去全球变化的重建
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作者单位: Laboratory for Climate and Ocean-Atmosphere Studies (LaCOAS), Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, 209 Chengfu Road, Beijing, China
Recommended Citation:
Yang H.,Li Q.,Wang K.,et al. Decomposing the meridional heat transport in the climate system[J]. Climate Dynamics,2015-01-01,44(2017-09-10)