A two-way nested simulation of the oceanic circulation in the Southwestern Atlantic Public Deposited

http://ir.library.oregonstate.edu/concern/articles/g732df53b

This is the publisher’s final pdf. The published article is copyrighted by the American Geophysical Union and can be found at:  http://onlinelibrary.wiley.com/journal/10.1002/%28ISSN%292169-9291.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • This article presents the results of a high-resolution (1/12°), two-way nested simulation of the oceanic circulation in the southwestern Atlantic region. A comparison between the model results and extant observations indicates that the nested model has skill in reproducing the best-known aspects of the regional circulation, e.g., the volume transport of the ACC, the latitudinal position of the BMC, the shelf break upwelling of Patagonia, and the Zapiola Anticyclone. Sensitivity experiments indicate that the bottom stress parameterization significantly impacts the mean location of the Brazil/Malvinas Confluence and the transport of the Zapiola Anticyclone. The transport of the Brazil Current strengthens during the austral summer and weakens during the austral winter. These variations are driven by the wind stress curl over the southwestern Atlantic. The variations of the transport of the Malvinas Current are out of phase with those of the Brazil Current. Most of the seasonal variability of this current is concentrated in the offshore portion of the jet, the inshore portion has a weak seasonality that modulates the magnitude of the Patagonian shelf break upwelling. Using passive tracers we show that most of the entrainment of deep waters into the shelf occurs in the southernmost portion of the Patagonian shelf and along the inshore boundary of the Brazil Current. Shelf waters are preferentially detrained near the Brazil/Malvinas Confluence. Consistent with previous studies, our simulation also shows that south of ~42°S the Malvinas Current is composed of two jets, which merge near 42°S to form a single jet farther north.
Resource Type
DOI
Date Available
Date Issued
Citation
  • Combes, V., and R. P. Matano (2014), A two-way nested simulation of the oceanic circulation in the Southwestern Atlantic, Journal of Geophysical Research: Oceans, 119, 731–756. doi:10.1002/2013JC009498
Series
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces

Relationships

In Administrative Set:
Last modified: 10/27/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items