Dynamics of the direct intrusion of Gulf Stream ring water onto the Mid-Atlantic Bight shelf
Weifeng Zhang,Glen Gawarkiewicz +1 more
TLDR
In this article, the authors present a direct intrusion of Gulf Stream warm-core ring water onto the shelf representing a previously unknown exchange process at the shelf break, which has important biogeochemical implications and could facilitate migration of marine species across the shelfbreak barrier and transport low-nutrient surface Gulf Stream ring water to the otherwise productive shelfbreak region.Abstract:
Onshore intrusions of offshore waters onto the Mid-Atlantic Bight shelf can greatly affect shelf circulation, biogeochemistry, and fisheries. Previous studies have concentrated on onshore intrusions of slope water. Here we present a direct intrusion of Gulf Stream warm-core ring water onto the shelf representing a previously unknown exchange process at the shelfbreak. Impingement of warm-core rings at the shelfbreak generates along-isobath intrusions that grow like Pinocchio's nose, extending hundreds of kilometers to the southwest. By combining satellite and Ocean Observatory Initiative Pioneer Array data and idealized numerical simulations, we discover that the intrusion results from topographically induced vorticity variation of the ring water, rather than from entrainment of the shelfbreak frontal jet. This intrusion of the Gulf Stream ring water has important biogeochemical implications and could facilitate migration of marine species across the shelfbreak barrier and transport low-nutrient surface Gulf Stream ring water to the otherwise productive shelfbreak region.read more
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Prospects for improving the representation of coastal and shelf seas in global ocean models
Jason Holt,Patrick Hyder,Mike Ashworth,James Harle,Helene T. Hewitt,Hedong Liu,Adrian L. New,Stephen Pickles,A. R. Porter,Ekaterina Popova,J. Icarus Allen,John Siddorn,Richard Wood +12 more
TL;DR: The benefit of improved resolution and process representation using 1∕12° global- and basin-scale northern North Atlantic nucleus for a European model of the ocean (NEMO) simulations; the latter includes tides and a k-e vertical mixing scheme, and the benefits of resolution are particularly apparent in eastern boundary upwelling zones.
Journal ArticleDOI
On the recent destabilization of the Gulf Stream path downstream of Cape Hatteras
TL;DR: Mapped satellite altimetry reveals interannual variability in the position of initiation of Gulf Stream meanders downstream of Cape Hatteras, and in situ data suggest that this shift has increased both upper-ocean/deep-offshore interaction events at Line W and open ocean/shelf interactions across the Middle Atlantic Bight (MAB) shelf break.
Journal ArticleDOI
Seasonal trends and phenology shifts in sea surface temperature on the North American northeastern continental shelf
Andrew C. Thomas,Andrew J. Pershing,Kevin D. Friedland,Janet A. Nye,Katherine E. Mills,Michael A. Alexander,Nicholas R. Record,Ryan Weatherbee,M. Elisabeth Henderson +8 more
TL;DR: In this article, a 33-year time series of daily satellite SST data was used to quantify and map spatial patterns in SST trends and phenology over the northeastern North American continental shelf from Cape Hatteras to the Scotian Shelf.
Journal ArticleDOI
The Ocean Observatories Initiative
John H. Trowbridge,Robert A. Weller,Deborah S. Kelley,Edward P. Dever,Albert J. Plueddemann,John A. Barth,Orest E. Kawka +6 more
TL;DR: The Ocean Observatories Initiative (OOI) as mentioned in this paper is an integrated network that enables scientific investigation of interlinked physical, chemical, biological and geological processes throughout the global ocean, with near real-time data delivery via a common Cyberinfrastructure.
Journal ArticleDOI
Integrated Observations of Global Surface Winds, Currents, and Waves: Requirements and Challenges for the Next Decade
Ana Beatriz Villas Bôas,Fabrice Ardhuin,Alex Ayet,Alex Ayet,Mark A. Bourassa,Peter Brandt,Peter Brandt,Betrand Chapron,Bruce D. Cornuelle,J. T. Farrar,Melanie R. Fewings,Baylor Fox-Kemper,Sarah T. Gille,Christine Gommenginger,Patrick Heimbach,Momme C. Hell,Qing Li,Matthew R. Mazloff,Sophia Merrifield,Alexis Mouche,M.-H Rio,Ernesto Rodriguez,Jamie D. Shutler,Aneesh C. Subramanian,Eric Terrill,Michel Tsamados,Clement Ubelmann,Erik van Sebille +27 more
TL;DR: This article reviewed the current state of observations of surface winds, currents, and waves, and outlined observational gaps that limit our current understanding of coupled processes that happen at the air-sea-ice interface.
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