Douglas Wallace

Professor

Scientific Director, Halifax Marine Research Institute (HMRI) (2011 - current)

Email: douglas.wallace@dal.ca

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Recent Submissions

  • Ocean fertilization for geoengineering: A review of effectiveness, environmental impacts and emerging governance 

    Williamson, Phillip, Douglas W. R. Wallace, Cliff S. Law, Philip W. Boyd, et al. 2012. "Ocean fertilization for geoengineering: A review of effectiveness, environmental impacts and emerging governance." Process Safety and Environmental Protection 90(6): 475-488.
    Dangerous climate change is best avoided by drastically and rapidly reducing greenhouse gas emissions. Nevertheless, geoengineering options are receiving attention on the basis that additional approaches may also be ...
  • The Northeast Water Polynya as an Atmospheric Co2 Sink - a Seasonal Rectification Hypothesis 

    YAGER, PL, DWR WALLACE, KM JOHNSON, WO SMITH, et al. 1995. "The Northeast Water Polynya as an Atmospheric Co2 Sink - a Seasonal Rectification Hypothesis." Journal of Geophysical Research-Oceans 100(C3): 4389-4398.
    During the multidisciplinary 'NEW92' cruise of the United States Coast Guard Cutter (USCGC) Polar Sea to the recurrent Northeast Water (NEW) Polynya (77-81 degrees N, 6-17 degrees W; July-August 1992), total dissolved ...
  • Cold anticyclonic eddies formed from cold pool water in the southern Middle Atlantic Bight 

    Flagg, CN, D. Wallace, and Z. Kolber. 1997. "Cold anticyclonic eddies formed from cold pool water in the southern Middle Atlantic Bight." Continental Shelf Research 17(15): 1839-+.
    AVHRR satellite imagery of the southern Mid-Atlantic Eight during May 1993 revealed a large area of cold water over the shelf break and slope that appeared to spin up into a series of southward propagating anticyclonic ...
  • Using the Nutrient Ratio no Po as a Tracer of Continental-Shelf Waters in the Central Arctic-Ocean 

    WILSON, C., and DWR WALLACE. 1990. "Using the Nutrient Ratio no Po as a Tracer of Continental-Shelf Waters in the Central Arctic-Ocean." Journal of Geophysical Research-Oceans 95(C12): 22193-22208.
    Historical nitrate, phosphate, and dissolved oxygen data from the central Arctic Ocean are examined with particular emphasis on the conservative parameters NO (9 * NO3 + O2) and PO (135 * PO4 + O2). The NO/PO ratio is shown ...
  • Nitrous oxide in the North Atlantic Ocean 

    Walter, S., H. W. Bange, U. Breitenbach, and D. W. R. Wallace. 2006. "Nitrous oxide in the North Atlantic Ocean." Biogeosciences 3(4): 607-619.
    In order to get a comprehensive picture of the distribution of nitrous oxide (N(2)O) in the North Atlantic Ocean, measurements of dissolved nitrous oxide were made during three cruises in the tropical, subtropical and ...
  • A new vision of ocean biogeochemistry after a decade of the Joint Global Ocean Flux Study (JGOFS) 

    Fasham, MJR, BM Balino, MC Bowles, R. Anderson, et al. 2001. "A new vision of ocean biogeochemistry after a decade of the Joint Global Ocean Flux Study (JGOFS)." Ambio: 4-31.
    The Joint Global Ocean Flux Study (JGOFS) has completed a decade of intensive process and time-series studies on the regional and temporal dynamics of biogeochemical processes in five diverse ocean basins. Its field program ...
  • Tracking the Variable North Atlantic Sink for Atmospheric CO2 

    Watson, Andrew J., Ute Schuster, Dorothee C. E. Bakker, Nicholas R. Bates, et al. 2009. "Tracking the Variable North Atlantic Sink for Atmospheric CO2." Science 326(5958): 1391-1393.
    The oceans are a major sink for atmospheric carbon dioxide (CO2). Historically, observations have been too sparse to allow accurate tracking of changes in rates of CO2 uptake over ocean basins, so little is known about how ...
  • Measurements of organic species in air and seawater from the tropical Atlantic 

    Williams, J., R. Holzinger, V. Gros, X. Xu, et al. 2004. "Measurements of organic species in air and seawater from the tropical Atlantic." Geophysical Research Letters 31(23): 2306-L23S06.
    A West -East crossing of the Tropical Atlantic during Meteor cruise 55 included measurements of organic species within the atmospheric marine boundary layer and the upper ocean. Acetone, methanol, acetonitrile and DMS were ...
  • Water-Based, Gravimetric Method for the Determination of Gas Sample Loop Volume 

    WILKE, RJ, DWR WALLACE, and KM JOHNSON. 1993. "Water-Based, Gravimetric Method for the Determination of Gas Sample Loop Volume." Analytical Chemistry 65(17): 2403-2406.
    No abstract available.
  • Distribution of N2O in the Baltic Sea during transition from anoxic to oxic conditions 

    Walter, S., U. Breitenbach, H. W. Bange, G. Nausch, et al. 2006. "Distribution of N2O in the Baltic Sea during transition from anoxic to oxic conditions." Biogeosciences 3(4): 557-570.
    In January 2003, a major inflow of cold and oxygen-rich North Sea Water terminated an ongoing stagnation period in parts of the central Baltic Sea. In order to investigate the role of North Sea Water inflow in the production ...
  • Estimating the monthly pCO(2) distribution in the North Atlantic using a self-organizing neural network 

    Telszewski, M., A. Chazottes, U. Schuster, A. J. Watson, et al. 2009. "Estimating the monthly pCO(2) distribution in the North Atlantic using a self-organizing neural network." Biogeosciences 6(8): 1405-1421.
    Here we present monthly, basin-wide maps of the partial pressure of carbon dioxide (pCO(2)) for the North Atlantic on a 1 degrees latitude by 1 degrees longitude grid for years 2004 through 2006 inclusive. The maps have ...
  • Ventilation of the Arctic Ocean cold halocline: rates of diapycnal and isopycnal transport, oxygen utilization and primary production inferred using chlorofluoromethane distributions 

    Wallace, D. W. R., R. M. Moore, and E. P. Jones. 1987. "Ventilation of the Arctic Ocean cold halocline: rates of diapycnal and isopycnal transport, oxygen utilization and primary production inferred using chlorofluoromethane distributions." Deep-Sea Research, Part A (Oceanographic Research Papers) 34(12): 1957-79.
    A highly simplified model of the Arctic Ocean cold halocline, incorporating parameterizations of both along-isopycnal and diapycnal transport, has been developed and constrained by observed profiles of temperature, salinity ...
  • Anthropogenic chlorofluoromethanes and seasonal mixing rates in the Middle Atlantic Bight 

    Wallace, D. W. R.. 1994. "Anthropogenic chlorofluoromethanes and seasonal mixing rates in the Middle Atlantic Bight." Deep-Sea Research, Part II (Topical Studies in Oceanography) 41(2-3): 307-24.
    Measurements of the chlorofluorocarbons (CFCs), F11 (CCl3F) and F12 (CCl2F2) were made during the Shelf Edge Exchange Processes II (SEEP-II) experiment in the Middle Atlantic Bight during 1985-1989; These compounds undergo ...
  • Use of SF(6) to estimate anthropogenic CO(2) in the upper ocean 

    Tanhua, Toste, Darryn W. Waugh, and Douglas W. R. Wallace. 2008. "Use of SF(6) to estimate anthropogenic CO(2) in the upper ocean." Journal of Geophysical Research-Oceans 113(C4): 04037-C04037.
    The highest concentrations of anthropogenic carbon ( C(ant)) are found in the upper layers of the world ocean. However, this is where seasonal variability of inorganic carbon and related parameters due to thermal and ...
  • On the role of heat fluxes in the uptake of anthropogenic carbon in the North Atlantic 

    Volker, C., DWR Wallace, and DA Wolf-Gladrow. 2002. "On the role of heat fluxes in the uptake of anthropogenic carbon in the North Atlantic." Global Biogeochemical Cycles 16(4): 1138-1138.
    The influence of the overturning circulation on the anthropogenic carbon sink in the North Atlantic is investigated with a simple box model. The net air-sea flux of anthropogenic carbon in the North Atlantic is the result ...
  • Large air-sea gas fluxes associated with breaking waves 

    Wallace, D. W. R., and C. D. Wirick. 1992. "Large air-sea gas fluxes associated with breaking waves." Nature 356(6371): 694-6.
    The authors present a time series of near-surface dissolved O2 from November to March in coastal waters. The time series is punctuated by sudden large increases in dissolved O2 associated with surface wave activity. A ...
  • Simultaneous mooring-based measurements of seawater CO2 and O-2 off Cape Hatteras, North Carolina 

    DeGrandpre, MD, TR Hammar, DWR Wallace, and CD Wirick. 1997. "Simultaneous mooring-based measurements of seawater CO2 and O-2 off Cape Hatteras, North Carolina." Limnology and Oceanography 42(1): 21-28.
    We deployed CO2 and O-2 sensors on the U.S. continental shelf off Cape Hatteras, North Carolina, during late summer 1994. A continuous 32-d gas record was obtained at 20 m in 25 m of water, below the thermocline for most ...
  • Vertical profiles of CCl3F (F-11) and CCl2F2 (F-12) in the central Arctic Ocean basin 

    Wallace, D. W. R., and R. M. Moore. 1985. "Vertical profiles of CCl3F (F-11) and CCl2F2 (F-12) in the central Arctic Ocean basin." Journal of Geophysical Research 90: 1155-66.
    The anthropogenic chlorofluoromethanes CCl3F (F-11) and CCl2F2 (F-12) have been measured to depths of 1800 m in the Canada Basin of the Arctic Ocean. The measurements were made during April 1983. Surface layer concentrations ...
  • Shallow-depth calcium carbonate dissolution; fact or fiction? 

    Wallace, Douglas, Society The Oceanography, Oceanography American Society of Limnology and, and Union American Geophysical. 2012. "Shallow-depth calcium carbonate dissolution; fact or fiction?." Ocean Sciences Meeting 2012: 486-487.
    No abstract available.
  • Introduction to special section: Ocean measurements and models of carbon sources and sinks 

    Wallace, DWR. 2001. "Introduction to special section: Ocean measurements and models of carbon sources and sinks." Global Biogeochemical Cycles 15(1): 3-10.
    No abstract available.

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