气候变化领域集成服务门户(CCPortal): Budgets for decadal variability in pacific ocean heat content

CCPortal

DOI	10.1175/JCLI-D-19-0360.1
	Budgets for decadal variability in pacific ocean heat content
	Hu Z.; Hu A.; Hu Y.; Rosenbloom N.
发表日期	2020
ISSN	0894-8755
起始页码	7663
结束页码	7678
卷号	33 期号:17
英文摘要	Aslowdown in the rate of surface warming in the early 2000s led to renewed interest in the redistribution of ocean heat content (OHC) and its relationship with internal climate variability.Weuse the Community Earth System Model version 1 to study the relationship between OHC and the interdecadal Pacific oscillation (IPO), a major mode of decadal sea surface temperature variability in the Pacific Ocean. By comparing the relative contributions of surface heat flux and ocean dynamics to changes in OHC for different phases of the IPO, we try to identify the underlying physical processes involved. Our results suggest that during IPO phase transitions, changes of 0-300-m OHC across the northern extratropical Pacific are positively contributed by both surface heat flux and oceanic heat transport. By contrast, oceanic heat transport appears to drive the OHC changes in equatorial Pacific whereas surface heat flux acts as a damping term. During a positive IPO phase, weakened wind-driven circulation acts to increase the OHC in the equatorial Pacific while the enhanced evaporation acts to damp OHC anomalies. In the Kuroshio-Oyashio Extension region, a dipole anomaly of zonal heat advection amplifies an OHC dipole anomaly that moves eastward, while strong turbulent heat fluxes act to dampen this OHCanomaly. In the northern subtropical Pacific, both the wind-driven evaporation change and the change of zonal heat advection along Kuroshio Extension contribute to the OHC change during phase transition. For the northern subpolar Pacific, both surface heat flux and enhanced meridional advection contribute to the positive OHC anomalies during the positive IPO phase. © 2020 American Meteorological Society.
英文关键词	Advection; Budget control; Climate models; Earth (planet); Enthalpy; Evaporation; Heat transfer; Ocean currents; Surface waters; Decadal variability; Inter-decadal pacific oscillations; Kuroshio Extension; Relative contribution; Sea surface temperature variability; Surface heat fluxes; Turbulent heat fluxes; Wind-driven circulation; Heat flux; air-sea interaction; climate variation; decadal variation; heat flux; heat transfer; sea surface temperature; temperature anomaly; Kuroshio Extension; Pacific Ocean; Pacific Ocean (Equatorial); Pacific Ocean (Subtropical)
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/171161
作者单位	Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Climate and Global Dynamics Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China
推荐引用方式 GB/T 7714	Hu Z.,Hu A.,Hu Y.,et al. Budgets for decadal variability in pacific ocean heat content[J],2020,33(17).
APA	Hu Z.,Hu A.,Hu Y.,&Rosenbloom N..(2020).Budgets for decadal variability in pacific ocean heat content.Journal of Climate,33(17).
MLA	Hu Z.,et al."Budgets for decadal variability in pacific ocean heat content".Journal of Climate 33.17(2020).