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Browsing by Author "Dacey, John W. H."

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Browsing by Author "Dacey, John W. H."

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  • Le Clainche, Yvonnick; Levasseur, Maurice; Vezina, Alain; Dacey, John W. H.; Saucier, Francois J. (National Research Council Canada, 2004-06-23)
    The dimethylsulfide (DMS) production model NODEM (Northern Oceans DMS Emission Model) was coupled with the water column ocean model GOTM (General Ocean Turbulence Model) that includes a two-equation k&150;ε turbulence ...
  • Zemmelink, Hendrik J.; Delille, B.; Tison, J. L.; Hintsa, Eric J.; Houghton, Leah; Dacey, John W. H. (American Geophysical Union, 2006-07-13)
    Field measurements by eddy correlation (EC) indicate an average uptake of 0.6 g CO2 m−2 d−1 by the ice-covered western Weddell Sea in December 2004. At the same time, snow that covers ice floes of the western Weddell Sea ...
  • Zemmelink, Hendrik J.; Dacey, John W. H.; Houghton, Leah; Hintsa, Eric J.; Liss, P. S. (American Geophysical Union, 2008-03-20)
    This study, conducted in December 2004, is the first to present observations of DMS in a snow pack covering the multi-year sea ice of the western Weddell Sea. The snow layer is important because it is the interface through ...
  • Hill, Richard W.; Dacey, John W. H.; Hill, Susan D.; Edward, Ahser; Hicks, Wayne A. (National Research Council Canada, 2004-06-23)
    Substantial accumulation of dimethylsulfoniopropionate (DMSP) is documented in tissues of all six of the common species of giant clams (Tridacnidae). Results include measures of DMSP concentrations in siphonal mantle, ...
  • Zemmelink, Hendrik J.; Dacey, John W. H.; Hintsa, Eric J. (National Research Council Canada, 2004-06-24)
    This paper provides a brief overview of the state-of-the-art of techniques that are currently used for field measurements of trace gas fluxes and the subsequent derivation of gas transfer rates over the oceans. Special ...
  • Zemmelink, Hendrik J.; Houghton, Leah; Dacey, John W. H.; Worby, A. P.; Liss, P. S. (American Geophysical Union, 2005-12-10)
    The distribution of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP) and dimethylsulfoxide (DMSO) was examined in lead water in pack ice of the Weddell Sea. Samples were taken by pulling water into a syringe from ...
  • Levine, Naomi M.; Varaljay, Vanessa A.; Toole, Dierdre A.; Dacey, John W. H.; Doney, Scott C.; Moran, Mary Ann (2011-10)
    Dimethylsulfide (DMS) is a climatically relevant trace gas produced and cycled by the surface ocean food web. Mechanisms driving intraannual variability in DMS production and dimethylsulfoniopropionate (DMSP) degradation ...
  • Zappa, Christopher J.; McGillis, Wade R.; Raymond, Peter A.; Edson, James B.; Hintsa, Eric J.; Zemmelink, Hendrik J.; Dacey, John W. H.; Ho, David T. (American Geophysical Union, 2007-05-17)
    Air-water gas transfer influences CO2 and other climatically important trace gas fluxes on regional and global scales, yet the magnitude of the transfer is not well known. Widely used models of gas exchange rates are based ...
  • Zemmelink, Hendrik J.; Dacey, John W. H.; Hintsa, Eric J.; McGillis, Wade R.; Gieskes, Winfried W. C.; Klaassen, Wim; de Groot, Henk W.; Baar, Hein J. W. de (American Geophysical Union, 2004-06-30)
    Gas transfer rates were determined from vertical profile measurements of atmospheric dimethylsulfide (DMS) gradients over the equatorial Pacific Ocean obtained during the GasEx-2001 cruise. A quadratic relationship between ...
  • Zemmelink, Hendrik J.; Houghton, Leah; Sievert, Stefan M.; Frew, Nelson M.; Dacey, John W. H. (Inter-Research, 2005-06-23)
    Gradients of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), dimethylsulfoxide (DMSO), and bacterial numbers and diversity from the surface microlayer to 500 cm depth were assessed in coastal waters surrounding ...
  • Asher, Elizabeth C.; Dacey, John W. H.; Mills, Matthew M.; Arrigo, Kevin R.; Tortell, Philippe D. (American Geophysical Union, 2011-12-14)
    The vast Antarctic sea-ice zone (SIZ) is a potentially significant source of the climate-active gas dimethylsulfide (DMS), yet few data are available on the concentrations and turnover rates of DMS and the related compounds ...
  • Ho, David T.; Zappa, Christopher J.; McGillis, Wade R.; Bliven, Larry F.; Ward, Brian; Dacey, John W. H.; Schlosser, Peter; Hendricks, Melissa B. (American Geophysical Union, 2004-07-01)
    Rain has been shown to significantly enhance the rate of air-water gas exchange in fresh water environments, and the mechanism behind this enhancement has been studied in laboratory experiments. In the ocean, the effects ...
  • Hill, Richard W.; Dacey, John W. H. (Inter-Research, 2006-09-30)
    Dimethylsulfoniopropionate (DMSP) synthesized by marine phytoplankton is the principal source of dimethylsulfide (DMS), an important climate-affecting gas. Prior research has demonstrated that grazing by invertebrate ...
  • Brooks, Ian M.; Bloom, A. Anthony; Brooks, Barbara J.; Lingard, Justin J. N.; McQuaid, James B.; Norris, Sarah J.; Smith, Michael H.; Smith, Paul D.; Yelland, Margaret J.; Moat, Ben I.; Pascal, Robin W.; Prytherch, John; Srokosz, Meric; Taylor, Peter K.; Upstill-Goddard, Robert C.; Salter, Matt; Nightingale, Philip D.; Archer, Stephen D.; Beale, Rachael; Dixon, Jo; Goldson, Laura E.; Hardman-Mountford, Nick; Liddicoat, Malcolm; Moore, Gerald; Stephens, John A.; D'Asaro, Eric A.; McNeil, Craig L.; Beatty, Cory; DeGrandpre, Michael D.; Blomquist, Byron; Huebert, Barry; Cluderay, John; Zemmelink, Hendrik J.; Coles, David; Hsueh, Ping-Chang; Leighton, Timothy G.; Dacey, John W. H.; Drennan, William M.; Rebozo, Mike; Sahlee, Erik; Gabriele, Joseph; Hill, Martin K.; Horn, Matt; De Leeuw, Gerrit; Neill, Craig; Skjelvan, Ingunn; O'Doherty, Simon; Walsh, Roisin; Young, Dickon; Schuster, Ute; Telszewski, Maciej; Slagter, Hans; Ward, Brian; Woolf, David K. (American Meteorological Society, 2009-05)
    As part of the U.K. contribution to the international Surface Ocean–Lower Atmosphere Study, a series of three related projects—DOGEE, SEASAW, and HiWASE—undertook experimental studies of the processes controlling the ...
  • Hill, Richard W.; Dacey, John W. H. (Inter-Research, 2007-08-07)
    Dimethylsulfoniopropionate (DMSP) synthesized by marine phytoplankton is the principal source of dimethylsulfide (DMS), an important climate-affecting gas. Grazing by small zooplankton on phytoplankton often accelerates ...
  • Zappa, Christopher J.; Ho, David T.; McGillis, Wade R.; Banner, Michael L.; Dacey, John W. H.; Bliven, Larry F.; Ma, Barry; Nystuen, Jeffrey A. (American Geophysical Union, 2009-07-09)
    Results from a rain and gas exchange experiment (Bio2 RainX III) at the Biosphere 2 Center demonstrate that turbulence controls the enhancement of the air-sea gas transfer rate (or velocity) k during rainfall, even though ...
  • Zemmelink, Hendrik J.; Gieskes, Winfried W. C.; Klaassen, Wim; Beukema, Wim J.; de Groot, Henk W.; Baar, Hein J. W. de; Hintsa, Eric J.; McGillis, Wade R.; Dacey, John W. H. (American Geophysical Union, 2004-01-30)
    Gas transfer rates were determined from relaxed eddy accumulation (REA) measurements of the flux of dimethylsulfide (DMS) over the northeastern Pacific Ocean. This first application of the REA technique for the measurement ...
  • Hintsa, Eric J.; Dacey, John W. H.; McGillis, Wade R.; Edson, James B.; Zappa, Christopher J.; Zemmelink, Hendrik J. (American Geophysical Union, 2004-01-30)
    We measured vertical profiles of dimethylsulfide (DMS) in the atmospheric marine boundary layer from R/P FLIP during the 2000 FAIRS cruise. Applying Monin-Obukhov similarity theory to the DMS gradients and simultaneous ...
  • Brooks, Ian M.; Yelland, Margaret J.; Upstill-Goddard, Robert C.; Nightingale, Philip D.; Archer, Stephen D.; D'Asaro, Eric A.; Beale, Rachael; Beatty, Cory; Blomquist, Byron; Bloom, A. Anthony; Brooks, Barbara J.; Cluderay, John; Coles, David; Dacey, John W. H.; DeGrandpre, Michael D.; Dixon, Jo; Drennan, William M.; Gabriele, Joseph; Goldson, Laura E.; Hardman-Mountford, Nick; Hill, Martin K.; Horn, Matt; Hsueh, Ping-Chang; Huebert, Barry; De Leeuw, Gerrit; Leighton, Timothy G.; Liddicoat, Malcolm; Lingard, Justin J. N.; McNeil, Craig L.; McQuaid, James B.; Moat, Ben I.; Moore, Gerald; Neill, Craig L.; Norris, Sarah J.; O'Doherty, Simon; Pascal, Robin W.; Prytherch, John; Rebozo, Mike; Sahlee, Erik; Salter, Matt; Schuster, Ute; Skjelvan, Ingunn; Slagter, Hans; Smith, Michael H.; Smith, Paul D.; Srokosz, Meric; Stephens, John A.; Taylor, Peter K.; Telszewski, Maciej; Walsh, Roisin; Ward, Brian; Woolf, David K.; Young, Dickon; Zemmelink, Hendrik J. (American Meteorological Society, 2009-05)

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