首页|Role of sea level pressure in variations of the Canadian Arctic Archipelago throughflow

Role of sea level pressure in variations of the Canadian Arctic Archipelago throughflow

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
The throughflow in the Canadian Arctic Archipelago (CAA) had a significant impact on the North Atlantic Ocean with the Arctic climate change.The findings of physical mechanisms driving the throughflow in the CAA differed and few studies about the impact of sea level pressure(SLP) on the CAA throughflow were made.A high-resolution ice-ocean coupled Arctic Ocean Finite-Volume Community Ocean Model (AO-FVCOM) was used over the period 1978-2016 to examine the interannual and seasonal variability of the outflows in the CAA and the mechanism of SLP in driving the variation of the CAA throughflow quantitively.The simulated volume transport through Davis Strait,Nares Strait,Lancaster Sound and Jones Sound showed consistent increasing trends over 1978-2016 and the larger flux in winter and spring than in summer and fall.The variation of volume transport through Nares Strait contributed more than Lancaster and Jones Sound to the variation through Davis Strait.Five process-oriented experiments were made to further explore the role of SLP in setting up and controlling the sea surface height (SSH) difference and thus the throughflow transport in the CAA.The SLP was a primary forcing to control the SSH difference and the outflow transport compared with the wind forcing.The memory of the SSH to the SLP was short and an equilibrium state could be reached if the SLP varied with time.The upstream and downstream SLP difference,however,made a slight direct contribution to driving the volume transport of the CAA throughflow.In addition to the external forcing of SLP and wind,the variability of the CAA outflow was also influenced by the variability of the inflow/outflow and SSH on boundaries connected to the Pacific and Atlantic Oceans.The choice of SLP datasets from CORE-v2,ECMWF and NCEP was sensitive to the simulated uncertainty of volume transport.

Sea level pressureVolume transportCanadian Arctic ArchipelagoFVCOMSea surface height

ZHANG Yu、CHEN Chang-Sheng、SHEN Xin-Yi、XU Dan-Ya、SHAO Wei-Zeng、Robert C.BEARDSLEY、CHANG Liang、FENG Gui-Ping

展开 >

College of Marine Sciences,Shanghai Ocean University,Shanghai,201306,China

Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai),Zhuhai,519082,China

International Center for Marine Studies,Shanghai Ocean University,Shanghai,201306,China

School for Marine Science and Technology,University of Massachusetts-Dartmouth,New Bedford,02744,USA

Department of Physical Oceanography,Woods Hole Oceanographic Institution,Woods Hole,02543,USA

展开 >

2019YFA060700041706210PLR-16030003110210094207623819PJ1404300

2021

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2021.12(4)
  • 1
  • 60