Enhanced cross-shelf exchange by tides in the western Ross Sea


Contact
Qiang.Wang [ at ] awi.de

Abstract

The western Ross Sea is one of the key sites for cross-shelf water exchange around Antarctica. The mech- anism through which tides affect the cross-shelf exchange in the northwestern Ross Sea is investigated using numeri- cal simulations. Tides are found to increase the high-salinity shelf water (HSSW) outflow through the impact on the warm water intrusion of open ocean origin. The residual tidal currents are onshore along the Modified Circumpolar Deep Water pathway and therefore enhance its intrusion. Lighter ambient water adjacent to the HSSW increases the cross-flow density gradient, thus strengthening the HSSW export. At the same time, the onshore residual current and increased dilution of the HSSW have the potential to reduce the export rate. Owing to the existence of opposite tidal effects, the strongest HSSW export happens at the inter- mediate tidal forcing strength. The amplification of tides on cross-shelf exchange indicates that the relevant dynam- ical processes should be simulated or parameterized in climate models in order to adequately predict the ocean.



Item Type
Article
Authors
Divisions
Primary Division
Programs
Primary Topic
Research Networks
Publication Status
Published
Eprint ID
34531
DOI 10.1002/2013GL058207

Cite as
Wang, Q. , Danilov, S. , Hellmer, H. , Sidorenko, D. , Schroeter, J. and Jung, T. (2013): Enhanced cross-shelf exchange by tides in the western Ross Sea , Geophysical Research Letters, 40 (21), pp. 5735-5739 . doi: 10.1002/2013GL058207


Download
[thumbnail of published.pdf]
Preview
PDF
published.pdf

Download (486kB) | Preview
Cite this document as:

Share
Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email


Citation

Research Platforms
N/A

Campaigns
N/A


Actions
Edit Item Edit Item