气候变化领域集成服务门户(CCPortal): Diurnal Cycles of Near-Surface Currents Across the Tropical Pacific

CCPortal

DOI	10.1029/2020JC016982
	Diurnal Cycles of Near-Surface Currents Across the Tropical Pacific
	Masich J.; Kessler W.S.; Cronin M.F.; Grissom K.R.
发表日期	2021
ISSN	21699275
卷号	126 期号:4
英文摘要	Solar radiative heat and wind-forced momentum can be trapped at the surface and transmitted into the ocean interior via a daily descending shear layer that mixes heat and momentum downwards. Here, we characterize the extent of this mechanism across the tropical Pacific via seven mooring deployments spanning the eastern and western tropical Pacific and the Inter-Tropical and South Pacific Convergence Zones. We find a wide range of diurnal cycles in temperature and velocity, from very weak cycles trapped in the upper 10 m to strong cycles that reach as deep as 60 m. These deeper diurnal cycles appear where the strong background shear above the equatorial undercurrent in the eastern equatorial Pacific helps destabilize the fluid, setting up a persistent state of marginal instability. At the sites located in these marginally unstable regions, we find a linear relationship between wind speed and the depth and strength of the diurnal cycle in velocity. © 2021. American Geophysical Union. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	air-sea; diurnal; near -surface; sea surface temperature; tropical Pacific; wind
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/186393
作者单位	The Cooperative Institute for Climate, Ocean, and Ecosystem Studies, University of Washington, Seattle, WA, United States; NOAA Pacific Marine Environmental Laboratory, Seattle, WA, United States; NOAA National Data Buoy Center, Stennis Space Center, Stennis Space Center, MS, United States
推荐引用方式 GB/T 7714	Masich J.,Kessler W.S.,Cronin M.F.,et al. Diurnal Cycles of Near-Surface Currents Across the Tropical Pacific[J],2021,126(4).
APA	Masich J.,Kessler W.S.,Cronin M.F.,&Grissom K.R..(2021).Diurnal Cycles of Near-Surface Currents Across the Tropical Pacific.Journal of Geophysical Research: Oceans,126(4).
MLA	Masich J.,et al."Diurnal Cycles of Near-Surface Currents Across the Tropical Pacific".Journal of Geophysical Research: Oceans 126.4(2021).