气候变化领域集成服务门户(CCPortal): Impact of Current-Wind Interaction on Vertical Processes in the Southern Ocean

CCPortal

DOI	10.1029/2020JC016046
	Impact of Current-Wind Interaction on Vertical Processes in the Southern Ocean
	Song H.; Marshall J.; McGillicuddy D.J.; Jr.; Seo H.
发表日期	2020
ISSN	21699275
卷号	125 期号:4
英文摘要	Momentum input from westerly winds blowing over the Southern Ocean can be modulated by mesoscale surface currents and result in changes in large-scale ocean circulation. Here, using an eddy-resolving 1/20 degree ocean model configured near Drake Passage, we evaluate the impact of current-wind interaction on vertical processes. We find a reduction in momentum input from the wind, reduced eddy kinetic energy, and a modification of Ekman pumping rates. Wind stress curl resulting from current-wind interaction leads to net upward motion, while the nonlinear Ekman pumping term associated with horizontal gradients of relative vorticity induces net downward motion. The spatially averaged mixed layer depth estimated using a density criteria is shoaled slightly by current-wind interaction. Current-wind interaction, on the other hand, enhances the stratification in the thermocline below the mixed layer. Such changes have the potential to alter biogeochemical processes including nutrient supply, biological productivity, and air-sea carbon dioxide exchange. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	eddy kinetic energy; eddy-wind interaction; Ekman pumping; mixed layer depth; Southern Ocean; stratification
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/186929
作者单位	Department of Atmospheric Sciences, Yonsei University, Seoul, South Korea; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Applied Ocean Physics and Engineering, Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Physical Oceanography Department, Woods Hole Oceanographic Institution, Woods Hole, MA, United States
推荐引用方式 GB/T 7714	Song H.,Marshall J.,McGillicuddy D.J.,et al. Impact of Current-Wind Interaction on Vertical Processes in the Southern Ocean[J],2020,125(4).
APA	Song H.,Marshall J.,McGillicuddy D.J.,Jr.,&Seo H..(2020).Impact of Current-Wind Interaction on Vertical Processes in the Southern Ocean.Journal of Geophysical Research: Oceans,125(4).
MLA	Song H.,et al."Impact of Current-Wind Interaction on Vertical Processes in the Southern Ocean".Journal of Geophysical Research: Oceans 125.4(2020).