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  • 1
    Article
    Article
    Tracking North Atlantic climate (2007)
    Associated volumes
    Details Availability
    In: Bedford Institute of Oceanography, Bedford Institute of Oceanography ... in review, Dartmouth : BIO, 2001, 2006(2007), Seite 25-26, 1499-9951
    In: volume:2006
    In: year:2007
    In: pages:25-26
    Type of Medium: Article
    Pages: Ill., graph. Darst., Kt.
    ISSN: 1499-9951
    Language: English
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  • 2
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    Constraining effect of mesoscale features on carbon budget of photic layer in the NE subtropical Atlantic (2011)
    Inter-Research
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © Inter-Research, 2005. This article is posted here by permission of Inter-Research for personal use, not for redistribution. The definitive version was published in Marine Ecology Progress Series 287 (2005): 45-52, doi:10.3354/meps287045.
    Description: An oceanographic cruise was carried out in the subtropical NE Atlantic in April 1999 with the aim of investigating the role of the Azores Current, the STORM (subtropical oceanic rings of magnitude) cyclonic eddies and the Great Meteor Tablemount in triggering phytoplankton production. This information combined with previous studies allowed us to determine the role of these features in the carbon budget of the photic layer in this oligotrophic region. The results suggest that mesoscale dynamics, although modifying hydrographic characteristics and phytoplankton spatial distribution, do not appear to significantly affect primary production in the NE subtropical Atlantic.
    Description: This study was funded by the European Commission and the Spanish Ministerio de Educación y Cultura through the research programmes CANIGO (MAS3CT960060) and CARPOS (REN2003-09532-C03-01). B. Mouriño was supported by a PFPU fellowship from the Ministerio de Educación y Cultura (MEC, Spain) and a MECD/Fulbright postdoctoral fellowship.
    Keywords: Mesoscale features ; Phytoplankton biomass ; Primary production ; Carbon budget ; NE subtropical Atlantic
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Format: application/pdf
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    PAPER (OA)
  • 3
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    The response of methane hydrate beneath the seabed offshore Svalbard to ocean warming during the next three centuries (2013)
    AGU (American Geophysical Union) | Wiley
    In:  Geophysical Research Letters, 40 (19). pp. 5159-5163.
    Details
    Publication Date: 2017-09-01
    Description: Methane is a potent greenhouse gas and large-scale rapid release of methane from hydrate may have contributed to past abrupt climate change inferred from the geological record. The discovery in 2008 of over 250 plumes of methane gas escaping from the seabed of the West Svalbard continental margin at ~400 m water depth (mwd) suggests that hydrate is dissociating in the present-day Arctic. Here we model the dynamic response of hydrate-bearing sediments over a period of 2300 years and investigate ocean warming as a possible cause for present-day and likely future dissociation of hydrate, within 350–800 mwd, west of Svalbard. Future temperatures are given by two climate models, HadGEM2 and CCSM4, and scenarios, Representative Concentration Pathways (RCPs) 8.5 and 2.6. Our results suggest that over the next three centuries 5.3–29 Gg yr−1 of methane may be released to the Arctic Ocean on the West Svalbard margin.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1002/grl.50985
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    Loop Current Variability as Trigger of Coherent Gulf Stream Transport Anomalies (2019)
    AMS (American Meteorological Society)
    In:  Journal of Physical Oceanography, 49 (8). pp. 2115-2132.
    Details
    Publication Date: 2022-01-31
    Description: Satellite observations and output from a high-resolution ocean model are used to investigate how the Loop Current in the Gulf of Mexico affects the Gulf Stream transport through the Florida Straits. We find that the expansion (contraction) of the Loop Current leads to lower (higher) transports through the Straits of Florida. The associated surface velocity anomalies are coherent from the southwestern tip of Florida to Cape Hatteras. A simple continuity-based argument can be used to explain the link between the Loop Current and the downstream Gulf Stream transport: as the Loop Current lengthens (shortens) its path in the Gulf of Mexico, the flow out of the Gulf decreases (increases). Anomalies in the surface velocity field are first seen to the southwest of Florida and within 4 weeks propagate through the Florida Straits up to Cape Hatteras and into the Gulf Stream Extension. In both the observations and the model this propagation can be seen as pulses in the surface velocities. We estimate that the Loop Current variability can be linked to a variability of several Sverdrups (1Sv = 10(6) m(3) s(-1)) through the Florida Straits. The exact timing of the Loop Current variability is largely unpredictable beyond a few weeks and its variability is therefore likely a major contributor to the chaotic/intrinsic variability of the Gulf Stream. However, the time lag between the Loop Current and the flow downstream of the Gulf of Mexico means that if a lengthening/shortening of the Loop Current is observed this introduces some predictability in the downstream flow for a few weeks.
    Type: Article , PeerReviewed
    Format: archive
    Format: text
    DOI: 10.1175/JPO-D-18-0236.1
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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