气候变化领域集成服务门户(CCPortal): The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models and Glider Observations

CCPortal

DOI	10.1029/2020JC016609
	The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models and Glider Observations
	Karnauskas K.B.; Jakoboski J.; Johnston T.M.S.; Owens W.B.; Rudnick D.L.; Todd R.E.
发表日期	2020
ISSN	21699275
卷号	125 期号:11
英文摘要	The Equatorial Undercurrent (EUC) is a vital component of the coupled ocean-atmosphere system in the tropical Pacific. The details of its termination near the Galápagos Islands in the eastern Pacific have an outsized importance to regional circulation and ecosystems. Subject to diverse physical processes, the EUC is also a rigorous benchmark for global climate models (GCMs). Simulations of the EUC in three generations of GCMs are evaluated relative to recent underwater glider observations along 93°W. Simulations of the EUC have improved, but a slow bias of ~36% remains in the eastern Pacific, along with a dependence on resolution. Additionally, the westward surface current is too slow, and stratification is too strong (weak) by ~50% above (within) the EUC. These biases have implications for mixing in the equatorial cold tongue. Downstream lies the Galápagos, now resolved to varying degrees by GCMs. Properly representing the Galápagos is necessary to avoid new biases as the EUC improves. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	equatorial Pacific Ocean; Equatorial Undercurrent; global climate models; underwater gliders
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/186586
作者单位	Cooperative Institute for Research in Environmental Sciences and Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder, CO, United States; MetOcean Solutions, Raglan, New Zealand; Scripps Institution of Oceanography, La Jolla, CA, United States; Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
推荐引用方式 GB/T 7714	Karnauskas K.B.,Jakoboski J.,Johnston T.M.S.,et al. The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models and Glider Observations[J],2020,125(11).
APA	Karnauskas K.B.,Jakoboski J.,Johnston T.M.S.,Owens W.B.,Rudnick D.L.,&Todd R.E..(2020).The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models and Glider Observations.Journal of Geophysical Research: Oceans,125(11).
MLA	Karnauskas K.B.,et al."The Pacific Equatorial Undercurrent in Three Generations of Global Climate Models and Glider Observations".Journal of Geophysical Research: Oceans 125.11(2020).