气候变化领域集成服务门户(CCPortal): Discovery of a lunar air temperature tide over the ocean: a diagnostic of air-sea coupling

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DOI	10.1038/s41612-018-0033-9
	Discovery of a lunar air temperature tide over the ocean: a diagnostic of air-sea coupling
	Sakazaki T.; Hamilton K.
发表日期	2018
ISSN	23973722
卷号	1 期号:1
英文摘要	The lunar semidiurnal (L2) tide in the Earth’s atmosphere is unique as a purely mechanically forced periodic signal and it has been detected in upper atmosphere winds and temperature and in surface barometric pressure. L2 signals in surface air temperature, L2(T), have only been detected at a single land station (results published almost a century ago). We report observational determinations of L2(T) over the ocean by using data from 38 moored buoys across the tropical Pacific and Atlantic. In contrast to published speculation that L2(T) should be negligible over ocean, we find that the observed L2(T) is fairly close to that consistent with an adiabatic L2 pressure variation. Any deviations from purely adiabatic behavior are a measure of diabatic effects on the surface air—expected to be dominated by damping processes, notably heat exchange with the ocean surface. With the aid of climate model simulations that include L2-tide-like variations, we demonstrate that our observations of L2(T) provide a unique diagnosis for the strength of air-sea coupling and a useful constraint on climate model formulations of this coupling. © 2018, The Author(s).
语种	英语
scopus关键词	adiabatic process; air temperature; air-sea interaction; atmosphere-ocean coupling; barometry; climate forcing; climate modeling; damping; diabatic process; diurnal variation; wind field; Atlantic Ocean; Atlantic Ocean (Tropical); Pacific Ocean; Pacific Ocean (Tropical)
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178133
作者单位	International Pacific Research Center, University of Hawai’iHI 96822, United States; Japan Society for Promotion of Science Overseas Research Fellow, Chiyoda-ku, Tokyo, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Uji, 611-0011, Japan; Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
推荐引用方式 GB/T 7714	Sakazaki T.,Hamilton K.. Discovery of a lunar air temperature tide over the ocean: a diagnostic of air-sea coupling[J],2018,1(1).
APA	Sakazaki T.,&Hamilton K..(2018).Discovery of a lunar air temperature tide over the ocean: a diagnostic of air-sea coupling.npj Climate and Atmospheric Science,1(1).
MLA	Sakazaki T.,et al."Discovery of a lunar air temperature tide over the ocean: a diagnostic of air-sea coupling".npj Climate and Atmospheric Science 1.1(2018).