气候变化领域集成服务门户(CCPortal): Simulation of Deep Cycle Turbulence by a Global Ocean General Circulation Model

CCPortal

DOI	10.1029/2020GL088384
	Simulation of Deep Cycle Turbulence by a Global Ocean General Circulation Model
	Pei S.; Shinoda T.; Wang W.; Lien R.-C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Deep cycle turbulence (DCT) is a diurnally oscillating turbulence that penetrates into a stratified shear layer below the surface mixed layer, which is often observed in the eastern Pacific and Atlantic above the Equatorial Undercurrent (EUC). Here we present the simulation of DCT by a global ocean general circulation model (OGCM) for the first time. As the k-ε vertical mixing scheme is used in the OGCM, the simulation of observed DCT structure based on in situ microstructure measurements can be explicitly demonstrated. The simulated DCT is found in all equatorial ocean basins, and its characteristics agree very well with observations. Zonal and meridional variations of DCT in the entire equatorial Pacific and Atlantic are described through constructing the composite diurnal cycle. In the central Pacific where the maximum shear associated with EUC is deep, the separation of DCT from the surface mixed layer is much more prominent than other areas. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Oceanography; Eastern pacific; Equatorial Pacific; Equatorial undercurrents; Maximum shears; Microstructure measurements; Structure-based; Surface mixed layers; Vertical mixing; Turbulence; general circulation model; global ocean; meridional circulation; microstructure; ocean basin; turbulence; Pacific Ocean; Pacific Ocean (Equatorial)
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169963
作者单位	Department of Physical and Environmental Sciences, Texas A&M University-Corpus Christi, Corpus Christi, TX, United States; Climate Prediction Center, NOAA/NWS/NCEP, College Park, MD, United States; Applied Physics Laboratory, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Pei S.,Shinoda T.,Wang W.,et al. Simulation of Deep Cycle Turbulence by a Global Ocean General Circulation Model[J],2020,47(15).
APA	Pei S.,Shinoda T.,Wang W.,&Lien R.-C..(2020).Simulation of Deep Cycle Turbulence by a Global Ocean General Circulation Model.Geophysical Research Letters,47(15).
MLA	Pei S.,et al."Simulation of Deep Cycle Turbulence by a Global Ocean General Circulation Model".Geophysical Research Letters 47.15(2020).