气候变化领域集成服务门户(CCPortal): Quantifying the role of ocean dynamics in ocean mixed layer temperature variability

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DOI	10.1175/JCLI-D-20-0476.1
	Quantifying the role of ocean dynamics in ocean mixed layer temperature variability
	Patrizio C.R.; Thompson D.W.J.
发表日期	2021
ISSN	08948755
起始页码	2567
结束页码	2589
卷号	34 期号:7
英文摘要	Understanding the role of the ocean in climate variability requires first understanding the role of ocean dynamics in the ocean mixed layer and thus sea surface temperature variability. However, key aspects of the spatially and temporally varying contributions of ocean dynamics to such variability remain unclear. Here, the authors quantify the contributions of ocean dynamical processes to mixed layer temperature variability on monthly to multiannual time scales across the globe. To do so, they use two complementary but distinct methods: 1) a method in which ocean heat transport is estimated directly from a state-of-the-art ocean state estimate spanning 1992-2015 and 2) a method in which it is estimated indirectly from observations between 1980-2017 and the energy budget of the mixed layer. The results extend previous studies by providing quantitative estimates of the role of ocean dynamics in mixed layer temperature variability throughout the globe, across a range of time scales, in a range of available measurements, and using two different methods. Consistent with previous studies, both methods indicate that the ocean-dynamical contribution to mixed layer temperature variance is largest over western boundary currents, their eastward extensions, and regions of equatorial upwelling. In contrast to previous studies, the results suggest that ocean dynamics reduce the variance of Northern Hemisphere mixed layer temperatures on time scales longer than a few years. Hence, in the global mean, the fractional contribution of ocean dynamics to mixed layer temperature variability decreases at increasingly low frequencies. Differences in the magnitude of the ocean dynamical contribution based on the two methods highlight the critical need for improved and continuous observations of the ocean mixed layer. © 2021 American Meteorological Society.
英文关键词	Atmosphere-ocean interaction; Climate variability; Interannual variability; Interdecadal variability; North atlantic ocean; North pacific ocean; Oceanic variability
语种	英语
scopus关键词	Budget control; Dynamics; Surface waters; Time measurement; Continuous observation; Equatorial upwelling; Mixed layer temperature; Northern Hemispheres; Ocean heat transport; Quantitative estimates; Sea surface temperature variability; Western boundary currents; Ocean currents; air-sea interaction; annual variation; boundary current; climate variation; decadal variation; energy budget; mixed layer; Northern Hemisphere; quantitative analysis; sea surface temperature; temperature profile; timescale; Atlantic Ocean; Atlantic Ocean (North); Pacific Ocean; Pacific Ocean (North)
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/178589
作者单位	Department of Atmospheric Sciences, Colorado State University, Fort Collins, CO, United States
推荐引用方式 GB/T 7714	Patrizio C.R.,Thompson D.W.J.. Quantifying the role of ocean dynamics in ocean mixed layer temperature variability[J],2021,34(7).
APA	Patrizio C.R.,&Thompson D.W.J..(2021).Quantifying the role of ocean dynamics in ocean mixed layer temperature variability.Journal of Climate,34(7).
MLA	Patrizio C.R.,et al."Quantifying the role of ocean dynamics in ocean mixed layer temperature variability".Journal of Climate 34.7(2021).