Now showing items 1-6 of 6

  • Community-wide intercomparison exercise for the determination of dissolved iron in seawater 

    Bowie, Andrew R.; Achterberg, Eric P.; Croot, Peter L.; Baar, Hein J. W. de; Laan, Patrick; Moffett, James W.; Ussher, Simon J.; Worsfold, Paul J. (2005-07-29)
    The first large-scale international intercomparison of analytical methods for the determination of dissolved iron in seawater was carried out between October 2000 and December 2002. The exercise was conducted as a ...
  • Fluxes and gas transfer rates of the biogenic trace gas DMS derived from atmospheric gradients 

    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 ...
  • The marine geochemistry of the rare earth elements 

    Baar, Hein J. W. de (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-09)
    Novel methods were developed for the determination of 12 of the 14 Rare Earth Elements (REE) in seawater. Initial extractions of the REE by chelating ion exchange chromatography is followed by cation exchange for removal ...
  • Rapid decline of the CO2 buffering capacity in the North Sea and implications for the North Atlantic Ocean 

    Thomas, Helmuth; Prowe, A. E. Friederike; van Heuven, Steven; Bozec, Yann; Baar, Hein J. W. de; Schiettecatte, Laure-Sophie; Suykens, Kim; Kone, Mathieu; Borges, Alberto V.; Lima, Ivan D.; Doney, Scott C. (American Geophysical Union, 2007-10-06)
    New observations from the North Sea, a NW European shelf sea, show that between 2001 and 2005 the CO2 partial pressure (pCO2) in surface waters rose by 22 μatm, thus faster than atmospheric pCO2, which in the same period ...
  • Relaxed eddy accumulation measurements of the sea-to-air transfer of dimethylsulfide over the northeastern Pacific 

    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 ...
  • Synthesis of iron fertilization experiments : from the Iron Age in the Age of Enlightenment 

    Baar, Hein J. W. de; Boyd, Philip W.; Coale, Kenneth H.; Landry, Michael R.; Tsuda, Atsushi; Assmy, Philipp; Bakker, Dorothee C. E.; Bozec, Yann; Barber, Richard T.; Brzezinski, Mark A.; Buesseler, Ken O.; Boye, Marie; Croot, Peter L.; Gervais, Frank; Gorbunov, Maxim Y.; Harrison, Paul J.; Hiscock, William T.; Laan, Patrick; Lancelot, Christiane; Law, Cliff S.; Levasseur, Maurice; Marchetti, Adrian; Millero, Frank J.; Nishioka, Jun; Nojiri, Yukihiro; van Oijen, Tim; Riebesell, Ulf; Rijkenberg, Micha J. A.; Saito, Hiroaki; Takeda, Shigenobu; Timmermans, Klaas R.; Veldhuis, Marcel J. W.; Waite, Anya M.; Wong, Chi-Shing (American Geophysical Union, 2005-09-28)
    Comparison of eight iron experiments shows that maximum Chl a, the maximum DIC removal, and the overall DIC/Fe efficiency all scale inversely with depth of the wind mixed layer (WML) defining the light environment. Moreover, ...