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

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DOI	10.1029/2019JC015856
	The Summer Heat Balance of the Oregon Inner Shelf Over Two Decades: Mean and Interannual Variability
	Lemagie E.; Kirincich A.; Lentz S.
发表日期	2020
ISSN	21699275
卷号	125 期号:2
英文摘要	Summer temperature and velocity measurements from 14 years in 15 m of water over the inner shelf off Oregon were used to investigate interannual temperature variability and the capacity of the across-shelf heat flux to buffer net surface warming. There was no observable trend in summer mean temperatures, and the standard deviation of interannual variability (0.5°C) was less than the standard deviation in daily temperatures each summer (1.6°C, on average). Yet net surface heat flux provided a nearly constant source of heat each year, with a standard deviation less than 15 (Formula presented.) of the interannual mean. The summer mean across-shelf upwelling circulation advected warmer water offshore near the surface, cooling the inner shelf and buffering the surface warming. In most years (11 out of 14), this two-dimensional heat budget roughly closed with a residual less than 20 (Formula presented.) of the leading term. Even in years when the heat budget did not balance, the observed temperature change was negligible, indicating that an additional source of cooling was needed to close the budget. A comparison of the residual to the interannual variability in fields such as along-shelf wind stress, stratification, and along-shelf currents found no significant correlation, and further investigation into the intraseasonal dynamics is recommended to explain the results. An improved understanding of the processes that contribute to warming or cooling of the coastal ocean has the potential to improve predictions of the impact of year-to-year changes in local winds and circulation, such as from marine heat waves or climate change, on coastal temperatures. ©2020. 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/186999
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 Two Decades: Mean and Interannual Variability[J],2020,125(2).
APA	Lemagie E.,Kirincich A.,&Lentz S..(2020).The Summer Heat Balance of the Oregon Inner Shelf Over Two Decades: Mean and Interannual Variability.Journal of Geophysical Research: Oceans,125(2).
MLA	Lemagie E.,et al."The Summer Heat Balance of the Oregon Inner Shelf Over Two Decades: Mean and Interannual Variability".Journal of Geophysical Research: Oceans 125.2(2020).