气候变化领域集成服务门户(CCPortal): Atmosphere-ocean interactions and their footprint on heat transport variability in the northern hemisphere

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DOI	10.1175/JCLI-D-19-0570.1
	Atmosphere-ocean interactions and their footprint on heat transport variability in the northern hemisphere
	Liu Y.; Attema J.; Hazeleger W.
发表日期	2020
ISSN	0894-8755
起始页码	3691
结束页码	3710
卷号	33 期号:9
英文摘要	Interactions between the atmosphere and ocean play a crucial role in redistributing energy, thereby maintaining the energy balance of the climate system. Here, we examine the compensation between the atmosphere and ocean's heat transport variations. Motivated by previous studies with mostly numerical climate models, this so-called Bjerknes compensation is studied using reanalysis datasets. We find that atmospheric energy transport (AMET) and oceanic energy transport (OMET) variability generally agree well among the reanalysis datasets. With multiple reanalysis products, we show that Bjerknes compensation is present at almost all latitudes from 40° to 70°N in the Northern Hemisphere from interannual to decadal time scales. The compensation rates peak at different latitudes across different time scales, but they are always located in the subtropical and subpolar regions. Unlike some experiments with numerical climate models, which attribute the compensation to the variation of transient eddy transports in response to the changes of OMET at multidecadal time scales, we find that the response of mean flow to the OMET variability leads to the Bjerknes compensation, and thus the shift of the Ferrel cell at midlatitudes at decadal time scales in winter. This cell itself is driven by the eddy momentum flux. The oceanic response to AMET variations is primarily wind driven. In summer, there is hardly any compensation and the proposed mechanism is not applicable. Given the short historical records, we cannot determine whether the ocean drives the atmospheric variations or the reverse. © 2020 American Meteorological Society.
英文关键词	Atmospheric movements; Atmospheric thermodynamics; Heat transfer; Oceanography; Time measurement; Atmosphere-ocean interactions; Atmospheric energy; Atmospheric variations; Compensation rates; Different time scale; Historical records; Multi-decadal time scale; Northern Hemispheres; Climate models; air-sea interaction; climate modeling; energy balance; footprint; heat transfer; Northern Hemisphere
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171503
作者单位	Netherlands eScience Center, Amsterdam, Netherlands; Wageningen University, Wageningen, Netherlands; Faculty of Geoscience, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Liu Y.,Attema J.,Hazeleger W.. Atmosphere-ocean interactions and their footprint on heat transport variability in the northern hemisphere[J],2020,33(9).
APA	Liu Y.,Attema J.,&Hazeleger W..(2020).Atmosphere-ocean interactions and their footprint on heat transport variability in the northern hemisphere.Journal of Climate,33(9).
MLA	Liu Y.,et al."Atmosphere-ocean interactions and their footprint on heat transport variability in the northern hemisphere".Journal of Climate 33.9(2020).