气候变化领域集成服务门户(CCPortal): The Summer Heat Balance of the Oregon Inner Shelf Over 2 Decades: Intraseasonal Variability

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DOI	10.1029/2020JC016720
	The Summer Heat Balance of the Oregon Inner Shelf Over 2 Decades: Intraseasonal Variability
	Lemagie E.; Kirincich A.; Lentz S.
发表日期	2021
ISSN	21699275
卷号	126 期号:3
英文摘要	This study examines the heat balance of the inner shelf along the US West Coast using 14 years of summer temperature and velocity observations in 15 m water depth. Previous work at this site found no year-to-year variability in the observed mean summer temperature change despite significant warming due to surface heat flux and variable cooling due to across-shelf heat flux. Here, the processes that affect coastal water temperatures over time scales of days and months are investigated. Synoptic temperature variability (on time scales of several days) was predominantly due to the across-shelf heat flux, as there was little synoptic variability in the surface heating and no evidence that an along-shelf heat flux would close the two-dimensional heat budget when the residual was large. The analyses suggest the across-shelf heat flux was influenced by multiple mechanisms in addition to Ekman transport by along-shelf winds. For example, there was a three-layer vertical across-shelf velocity structure 40% ± 10% of the time and during downwelling-favorable winds there was an upwelling circulation 80% of the time. The across-shelf heat flux was generally highest near the surface and bottom boundaries, where the velocity observations were most limited. The heat budget residual was positive most of the time, likely resulting from uncertainty due to the observational limitations. An improved understanding of the processes that control the across-shelf heat flux and buffer temperature variability in the coastal ocean has the potential to improve predictions of coastal temperatures under climate change scenarios. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	heat budget; inner shelf; Oregon coast; PISCO; temperature; upwelling
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186414
作者单位	Woods Hole Oceanographic Institution, Woods Hole, MA, United States
推荐引用方式 GB/T 7714	Lemagie E.,Kirincich A.,Lentz S.. The Summer Heat Balance of the Oregon Inner Shelf Over 2 Decades: Intraseasonal Variability[J],2021,126(3).
APA	Lemagie E.,Kirincich A.,&Lentz S..(2021).The Summer Heat Balance of the Oregon Inner Shelf Over 2 Decades: Intraseasonal Variability.Journal of Geophysical Research: Oceans,126(3).
MLA	Lemagie E.,et al."The Summer Heat Balance of the Oregon Inner Shelf Over 2 Decades: Intraseasonal Variability".Journal of Geophysical Research: Oceans 126.3(2021).