气候变化领域集成服务门户(CCPortal): Ocean heat storage in response to changing ocean circulation processes

CCPortal

DOI	10.1175/JCLI-D-19-1016.1
	Ocean heat storage in response to changing ocean circulation processes
	Dias F.B.; Fiedler R.; Marsland S.J.; Domingues C.M.; Clément L.; Rintoul S.R.; Mcdonagh E.L.; Mata M.M.; Savita A.
发表日期	2020
ISSN	0894-8755
起始页码	9065
结束页码	9082
卷号	33 期号:21
英文摘要	Ocean heat storage due to local addition of heat ("added") and due to changes in heat transport ("redistributed") were quantified in ocean-only 2xCO2 simulations. While added heat storage dominates globally, redistribution makes important regional contributions, especially in the tropics. Heat redistribution is dominated by circulation changes, summarized by the super-residual transport, with only minor effects from changes in vertical mixing. While previous studies emphasized the contribution of redistribution feedback at high latitudes, this study shows that redistribution of heat also accounts for 65% of heat storage at low latitudes and 25% in the midlatitude (358-508S) Southern Ocean. Tropical warming results from the interplay between increased stratification and equatorward heat transport by the subtropical gyres, which redistributes heat from the subtropics to lower latitudes. The Atlantic pattern is remarkably distinct from other basins, resulting in larger basin-average heat storage. Added heat storage is evenly distributed throughout midlatitude Southern Ocean and dominates the total storage. However, redistribution stores heat north of the Antarctic Circumpolar Current in the Atlantic and Indian sectors, having an important contribution to the peak of heat storage at 458S. Southern Ocean redistribution results from intensified heat convergence in the subtropical front and reduced stratification in response to surface heat, freshwater, and momentum flux perturbations. These results highlight that the distribution of ocean heat storage reflects both passive uptake of heat and active redistribution of heat by changes in ocean circulation processes. The redistributed heat transport must therefore be better understood for accurate projection of changes in ocean heat uptake efficiency, ocean heat storage, and thermosteric sea level. © 2020 American Meteorological Society.
英文关键词	Heat transfer; Ocean currents; Sea level; Tropics; Antarctic Circumpolar Currents; Circulation changes; Local additions; Ocean circulation; Ocean heat uptake; Subtropical front; Subtropical Gyre; Thermosteric sea level; Heat storage; climate change; gyre; heat transfer; oceanic circulation; stratification; warming; Antarctic Circumpolar Current; Southern Ocean
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/171065
作者单位	Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia; CSIRO Oceans and Atmosphere, Aspendale, VIC, Australia; ARC Centre of Excellence for Climate Extremes, University of Tasmania, Hobart, TAS, Australia; Institute for Atmospheric and Earth Science Research, University of Helsinki, Helsinki, Finland; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia; National Oceanographic Centre, Southampton, United Kingdom; Centre for Southern Hemisphere Oceans Research, Hobart, TAS, Australia; Australian Antarctic Program Partnership, Hobart, TAS, Australia; NORCE, Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway; Instituto de Oceanografia, Universidade Federal do Rio Grande-FURG, Rio Grande, Brazil
推荐引用方式 GB/T 7714	Dias F.B.,Fiedler R.,Marsland S.J.,et al. Ocean heat storage in response to changing ocean circulation processes[J],2020,33(21).
APA	Dias F.B..,Fiedler R..,Marsland S.J..,Domingues C.M..,Clément L..,...&Savita A..(2020).Ocean heat storage in response to changing ocean circulation processes.Journal of Climate,33(21).
MLA	Dias F.B.,et al."Ocean heat storage in response to changing ocean circulation processes".Journal of Climate 33.21(2020).