气候变化领域集成服务门户(CCPortal): Improvements on the upper ocean simulation from 2007 to 2018 in the Canada Basin

CCPortal

DOI	10.1016/j.accre.2021.12.004
	Improvements on the upper ocean simulation from 2007 to 2018 in the Canada Basin
	MU L.-J.; WANG X.-Y.
发表日期	2022
ISSN	1674-9278
英文摘要	The Beaufort Gyre reserves most of the freshwater in the Arctic Ocean. Observation shows that the freshwater content over 2016–2018 far exceeds the level over the plateau period 2008–2012. Modeling the vertical temperature and salinity structure and their changes in the Beaufort Gyre is a way to understand the process related to such step changes. We configured a pan-Arctic sea ice-ocean model with a southern boundary at ∼7°N in the Atlantic Ocean. The numerical simulation with sea surface salinity restoring, a latitude dependent horizontal diffusivity scaled by the squared buoyancy frequency, and a weak vertical diffusivity of 5 × 10−7 m2 s−1 in the Arctic Ocean better reproduces the sea ice extent, the Pacific summer halocline water, and the freshwater variations as observed. The sea surface salinity restoring mitigates the surface desalination in the North Atlantic Ocean, therefore a weaker ocean stratification prevents the excessive warming in the intermediate Arctic Ocean. It is also found that the weak vertical background diffusivity is the major factor in our model to preserve the vertical ocean structure in the Canada Basin and also the step change of freshwater recently. In addition to resolving eddy activities in high resolution models, the success in our low resolution model suggests that tuning the vertical diffusivity serves as another approach to simulate the increasing freshwater content in the recent decade. © 2021 The Authors
英文关键词	Beaufort Gyre; Freshwater content; Numerical simulation; Upper Arctic Ocean
语种	英语
来源期刊	Advances in Climate Change Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251233
作者单位	Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China; Frontier Science Center for Deep Ocean Multispheres and Earth System (FDOMES), Physical Oceanography Laboratory, Ocean University of China, Qingdao, 266100, China
推荐引用方式 GB/T 7714	MU L.-J.,WANG X.-Y.. Improvements on the upper ocean simulation from 2007 to 2018 in the Canada Basin[J],2022.
APA	MU L.-J.,&WANG X.-Y..(2022).Improvements on the upper ocean simulation from 2007 to 2018 in the Canada Basin.Advances in Climate Change Research.
MLA	MU L.-J.,et al."Improvements on the upper ocean simulation from 2007 to 2018 in the Canada Basin".Advances in Climate Change Research (2022).