Recent Submissions

  • Eastern Pacific cooling and Atlantic overturning circulation during the last deglaciation 

    Kienast, Markus, Stephanie S. Kienast, Stephen E. Calvert, Timothy I. Eglinton, et al. 2006. "Eastern Pacific cooling and Atlantic overturning circulation during the last deglaciation." Nature 443(7113): 846-849.
    Surface ocean conditions in the equatorial Pacific Ocean could hold the clue to whether millennial-scale global climate change during glacial times was initiated through tropical ocean - atmosphere feedbacks or by changes ...
  • Near collapse of the meridional SST gradient in the eastern equatorial Pacific during Heinrich Stadial 1 

    Kienast, Stephanie S., Tobias Friedrich, Nathalie Dubois, Paul S. Hill, et al. 2013. "Near collapse of the meridional SST gradient in the eastern equatorial Pacific during Heinrich Stadial 1." Paleoceanography 28(4): 663-674.
    Sea surface temperatures (SST) and inorganic continental input over the last 25,000years (25ka) are reconstructed in the far eastern equatorial Pacific (EEP) based on three cores stretching from the equatorial front (~0.01 ...
  • Comment on "Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?'' by M. Lyle et al. 

    Francois, Roger, Martin Frank, Michiel Rutgers van der Loeff, Michael P. Bacon, et al. 2007. "Comment on "Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?'' by M. Lyle et al.." Paleoceanography 22(1): 1216-PA1216.
    No abstract available.
  • Comment on 'Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?' by M. Lyle et al 

    Francois, Roger, Martin Frank, Michiel Rutgers Van der Loeff, Michael P. Bacon, et al. 2007. "Comment on 'Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific?' by M. Lyle et al." Paleoceanography 22(3).
    No abstract available.
  • Millennial-scale variations in hydrography and biogeochemistry in the Eastern Equatorial Pacific over the last 100 kyr 

    Dubois, Nathalie, Markus Kienast, Stephanie Kienast, Claire Normandeau, et al. 2011. "Millennial-scale variations in hydrography and biogeochemistry in the Eastern Equatorial Pacific over the last 100 kyr." Quaternary Science Reviews 30(1-2): 210-223.
    In this study, we use records of nitrogen isotope ratios ([delta][super]15N), UK'37 temperature estimates, organic carbon and opal percentages from high-resolution sediment cores located in the eastern equatorial Pacific ...
  • The acceleration of oceanic denitrification during deglacial warming 

    Galbraith, Eric D., Markus Kienast, Ana Luiza Albuquerque, Mark A. Altabet, et al. 2013. "The acceleration of oceanic denitrification during deglacial warming." Nature Geoscience 6(7): 579-584.
    Over much of the ocean's surface, productivity and growth are limited by a scarcity of bioavailable nitrogen. Sedimentary delta N-15 records spanning the last deglaciation suggest marked shifts in the nitrogen cycle during ...
  • A review of nitrogen isotopic alteration in marine sediments 

    Robinson, Rebecca S., Markus Kienast, Ana Luiza Albuquerque, Mark Altabet, et al. 2012. "A review of nitrogen isotopic alteration in marine sediments." Paleoceanography 27: 4203-PA4203.
    Nitrogen isotopes are an important tool for evaluating past biogeochemical cycling from the paleoceanographic record. However, bulk sedimentary nitrogen isotope ratios, which can be determined routinely and at minimal cost, ...
  • Sedimentary opal records in the eastern equatorial Pacific: It is not all about leakage 

    Dubois, Nathalie, Markus Kienast, Stephanie Kienast, Stephen E. Calvert, et al. 2010. "Sedimentary opal records in the eastern equatorial Pacific: It is not all about leakage." Global Biogeochemical Cycles 24: 4020-GB4020.
    The clear predictions of the silicic acid leakage hypothesis (SALH) resulted in a number of studies of downcore opal records from the tropical Pacific. The original SALH predicts that unused silicic acid, due to Fe-driven ...
  • North Atlantic sea-level and circulation 

    Thompson, K. R.. 1986. "North Atlantic sea-level and circulation." Geophysical Journal of the Royal Astronomical Society 87(1): 15-32.
    Monthly sea-levels from an extensive array of North Atlantic tide gauges (26-50N) are examined. The spatial scale of the sea-level variations, and the reasons for them, are discussed. The contribution of local air pressure ...
  • A model of carrying capacity for suspended mussel culture in eastern Canada 

    Grant, J., and K. R. Thompson. 1988. "A model of carrying capacity for suspended mussel culture in eastern Canada." Journal of Shellfish Research 7(3): 568.
    Rapid growth of mussel (Mytilus edulis ) aquaculture in the Maritimes has placed increasing demands on resources in coastal waters. The carrying capacity of coastal sites for suspended mussel culture is modeled and criteria ...
  • Coupled atmosphere-ocean observations and modelling for Lunenburg Bay, Nova Scotia 

    Ritchie, Harold, Serge Desjardins, Jinyu Sheng, and Liang Wang. 2004. "Coupled atmosphere-ocean observations and modelling for Lunenburg Bay, Nova Scotia." Combined Preprints: 84th American Meteorological Society (AMS) Annual Meeting: 3-4
    A high resolution eddy resolving coastal model, using the free-surface version of CANDIE, is developed for atmospheric-ocean modeling system of Lunenburg Bay (LB). The model is used to study the three-dimensional barotropic ...
  • The Influence of Circulation and Water Temperature on the Distribution and Abundance of Calanus finmarchicus in the Gulf of St. Lawrence-Scotian Shelf System 

    Zakardjian, B. A., J. A. Runge, Y. Gratton, Y. Lu, et al. 2000. "The Influence of Circulation and Water Temperature on the Distribution and Abundance of Calanus finmarchicus in the Gulf of St. Lawrence-Scotian Shelf System." 2000 Ocean Sciences Meeting.
    As part of GLOBEC-Canada, we have developed a 3-D model that couples the life-cycle of Calanus with the hydrodynamics of the Gulf of St. Lawrence- Scotian Shelf (GSL-SS) system, as described by the Canada-Dietrich (CANDIE) ...
  • Simulating Circulation on the Scotian Shelf using a Sigma-Coordinate Model 

    Ohashi, K., J. Sheng, H. Ritchie, K. R. Thompson, et al. "Simulating Circulation on the Scotian Shelf using a Sigma-Coordinate Model." 40th CMOS Congress 2006 - Weather, Oceans and Climate, Exploring the Connections.
    Circulation on the Scotian Shelf in 2001 is simulated using the Princeton Ocean Model. We use a nested-grid setup, adapted from the operational circulation forecast system known as DalCoast. The outer model covers the ...
  • Simulating seasonal variability of circulation and hydrography on the Scotian Shelf 

    Ohashi, Kyoko, Jinyu Sheng, Keith R. Thompson, and Harold Ritchie. 2006. "Simulating seasonal variability of circulation and hydrography on the Scotian Shelf." Estuarine and Coastal Modeling 9. 2006: 123-137
    A three-dimensional shelf circulation model is used to simulate the seasonal variability of circulation and hydrography on the Scotian Shelf over the eastern Canadian seaboard. The model is a modified form of an operational ...
  • The barotropic ocean response to fast moving tropical cyclones affecting Atlantic Canada 

    Mecking, J., R. Greatbatch, C. Fogarty, and J. Sheng. "The barotropic ocean response to fast moving tropical cyclones affecting Atlantic Canada." Canadian Meteorological and Oceanographic Society
    Atlantic Canadian coastal waters are occasionally affected by tropical cyclones (TC) which can have devastating effects in the form of a storm surge and/or meteorological tsunami. The current operational storm surge model ...
  • A new two-way nested-grid ocean modelling technique applied to the scotian shelf and slope 

    Zhai, Xiaoming, Jinyu Sheng, and Richard Greatbatch. 2003. "A new two-way nested-grid ocean modelling technique applied to the scotian shelf and slope." Estuarine and Coastal Modeling - Proceedings of the Eighth International Conference.Estuarine and Coastal Modeling - Proceedings of the Eighth International Conference. 342-357
    A nested-grid ocean circulation model is developed for the Scotian Shelf and adjacent slope. The nested model consists of a fine-resolution inner model embedded inside a coarse-resolution outer model. The inner model covers ...
  • Numerical Study on Uptake and Spreading of Chlorofluorocarbons in the Northwest Atlantic Ocean 

    Zhao, J., J. Sheng, R. Greatbatch, K. Azetsu-Scott, et al. "Numerical Study on Uptake and Spreading of Chlorofluorocarbons in the Northwest Atlantic Ocean." Canadian Meteorological and Oceanographic Society.
    Chlorofluorocarbons (CFCs) are anthropogenic compounds released to the atmosphere since 1930s. They enter the surface ocean by gas exchange and are then transported to the deep ocean by circulation, convection and subduction. ...
  • A numerical study of circulation and associated variability in the Intra-Americas Sea 

    Lin, Yuehua, Jinyu Sheng, and Richard J. Greatbatch. 2010. "A numerical study of circulation and associated variability in the Intra-Americas Sea." 11th International Conference on Estuarine and Coastal Modeling. 388: 137-156
    A three-dimensional, data-assimilative, regional ocean circulation model is used in simulating circulation, hydrography and associated variability in the Intra-Americas Sea (IAS). The model domain covers the region between ...
  • Transport variability through the Yucatan Channel: the influence of the Florida Current and flow compensation around Cuba 

    Lin, Y., J. Sheng, and R. Greatbatch. "Transport variability through the Yucatan Channel: the influence of the Florida Current and flow compensation around Cuba." CMOS Congress 2008 - Water, Weather, and Climate Science Informing Decisions.
    Water enters and leaves the Gulf of Mexico via the Yucatan Channel and the part of the Florida Current that flows between Cuba and Florida. Both observation and model results suggest that the transport through the Yucatan ...
  • Improve the utility of a coastal circulation model by assimilating hydrographic observations into the model momentum equation 

    Zhai, L., and J. Sheng. "Improve the utility of a coastal circulation model by assimilating hydrographic observations into the model momentum equation."
    A numerical scheme is presented to assimilate hydrographic observations into the momentum equation of a limited-area coastal ocean circulation model. This new scheme has an advantage that hydrographic assimilation is only ...

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