Now showing items 433-452 of 921

    • Intensity of Th and Pa scavenging partitioned by particle chemistry in the North Atlantic Ocean 

      Hayes, Christopher T.; Anderson, Robert F.; Fleisher, Martin Q.; Vivancos, Sebastian M.; Lam, Phoebe J.; Ohnemus, Daniel C.; Huang, Kuo-Fang; Robinson, Laura F.; Lu, Yanbin; Cheng, Hai; Edwards, R. Lawrence; Moran, S. Bradley (2015-01)
      The natural radionuclides 231Pa and 230Th are incorporated into the marine sediment record by scavenging, or adsorption to various particle types, via chemical reactions that are not fully understood. Because these ...
    • The interaction of metal ions at the hydrous manganese dioxide-solution interface 

      Murray, James W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1973-06)
      An experimental study of the interaction of metal ions with the surface of hydrous manganese dioxide has been completed. The results of these experiments have greatly improved our qualitative understanding of the adsorption ...
    • Interactions of cadmium, zinc, and phosphorus in marine Synechococcus : field uptake, physiological and proteomic studies 

      Cox, Alysia D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-06)
      A combination of uptake field studies on natural phytoplankton assemblages and laboratory proteomic and physiological experiments on cyanobacterial isolates were conducted investigating the interactions of cadmium (Cd), ...
    • Interannual variability of primary production and dissolved organic nitrogen storage in the North Pacific Subtropical Gyre 

      Luo, Ya-Wei; Ducklow, Hugh W.; Friedrichs, Marjorie A. M.; Church, Matthew J.; Karl, David M.; Doney, Scott C. (American Geophysical Union, 2012-08-10)
      The upper ocean primary production measurements from the Hawaii Ocean Time series (HOT) at Station ALOHA in the North Pacific Subtropical Gyre showed substantial variability over the last two decades. The annual average ...
    • Interannual variations in continental-scale net carbon exchange and sensitivity to observing networks estimated from atmospheric CO2 inversions for the period 1980 to 2005 

      Gurney, Kevin R.; Baker, David F.; Rayner, Peter; Denning, Scott (American Geophysical Union, 2008-08-26)
      Interannually varying net carbon exchange fluxes from the TransCom 3 Level 2 Atmospheric Inversion Intercomparison Experiment are presented for the 1980 to 2005 time period. The fluxes represent the model mean, net carbon ...
    • Intercalibration studies of short-lived thorium-234 in the water column and marine particles 

      Maiti, Kanchan; Buesseler, Ken O.; Pike, Steven M.; Benitez-Nelson, Claudia R.; Cai, Pinghe; Chen, Weifang; Cochran, Kirk; Dai, Minhan; Dehairs, Frank; Gasser, Beat; Kelly, Roger P.; Masque, Pere; Miller, Lisa A.; Miquel, Juan Carlos; Moran, S. Bradley; Morris, Paul J.; Peine, Florian; Planchon, Frederic; Renfro, Alisha A.; Rutgers van der Loeff, Michiel M.; Santschi, Peter H.; Turnewitsch, Robert; Waples, James T.; Xu, Chen (Association for the Sciences of Limnology and Oceanography, 2012-09)
      Intercomparision of 234Th measurements in both water and particulate samples was carried out between 15 laboratories worldwide, as a part of GEOTRACES inter-calibration program. Particulate samples from four different ...
    • An intercomparison of procedures for the determination of total mercury in seawater and recommendations regarding mercury speciation during GEOTRACES cruises 

      Lamborg, Carl H.; Hammerschmidt, Chad R.; Gill, Gary A.; Mason, Robert P.; Gichuki, Susan (Association for the Sciences of Limnology and Oceanography, 2012-02)
      We conducted a laboratory intercomparison of total mercury (Hg) determination in seawater collected during U.S. GEOTRACES Intercalibration cruises in 2008 and 2009 to the NW Atlantic and NE Pacific Oceans. Results indicated ...
    • An interdisciplinary assessment of climate engineering strategies 

      Cusack, Daniela F.; Axsen, Jonn; Shwom, Rachael; Hartzell-Nichols, Lauren; White, Sam; Mackey, Katherine R. M. (Ecological Society of America, 2014-06)
      Mitigating further anthropogenic changes to the global climate will require reducing greenhouse-gas emissions (“abatement”), or else removing carbon dioxide from the atmosphere and/or diminishing solar input (“climate ...
    • Interlaboratory study for coral Sr/Ca and other element/Ca ratio measurements 

      Hathorne, Ed C.; Gagnon, Alexander C.; Felis, Thomas; Adkins, Jess F.; Asami, Ryuji; Boer, Wim; Caillon, Nicolas; Case, David H.; Cobb, Kim M.; Douville, Eric; deMenocal, Peter B.; Eisenhauer, Anton; Garbe-Schonberg, Dieter; Geibert, Walter; Goldstein, Steven L.; Hughen, Konrad A.; Inoue, Mayuri; Kawahata, Hodaka; Kolling, Martin; Cornec, Florence L.; Linsley, Braddock K.; McGregor, Helen V.; Montagna, Paolo; Nurhati, Intan S.; Quinn, Terrence M.; Raddatz, Jacek; Rebaubier, Helene; Robinson, Laura F.; Sadekov, Aleksey; Sherrell, Robert M.; Sinclair, Dan; Tudhope, Alexander W.; Wei, Gangjian; Wong, Henri; Wu, Henry C.; You, Chen-Feng (John Wiley & Sons, 2013-09-23)
      The Sr/Ca ratio of coral aragonite is used to reconstruct past sea surface temperature (SST). Twenty-one laboratories took part in an interlaboratory study of coral Sr/Ca measurements. Results show interlaboratory bias can ...
    • An interlaboratory study of TEX86 and BIT analysis of sediments, extracts, and standard mixtures 

      Schouten, Stefan; Hopmans, Ellen C.; Rosell-Mele, Antoni; Pearson, Ann; Adam, Pierre; Bauersachs, Thorsten; Bard, Edouard; Bernasconi, Stefano M.; Bianchi, Thomas S.; Brocks, Jochen J.; Carlson, Laura Truxal; Castaneda, Isla S.; Derenne, Sylvie; Selver, Ayca Dogrul; Dutta, Koushik; Eglinton, Timothy I.; Fosse, Celine; Galy, Valier; Grice, Kliti; Hinrichs, Kai-Uwe; Huang, Yongsong; Huguet, Arnaud; Huguet, Carme; Hurley, Sarah; Ingalls, Anitra; Jia, Guodong; Keely, Brendan; Knappy, Chris; Kondo, Miyuki; Krishnan, Srinath; Lincoln, Sara; Lipp, Julius; Mangelsdorf, Kai; Martínez-Garcia, Alfredo; Menot, Guillemette; Mets, Anchelique; Mollenhauer, Gesine; Ohkouchi, Naohiko; Ossebaar, Jort; Pagani, Mark; Pancost, Richard D.; Pearson, Emma J.; Peterse, Francien; Reichart, Gert-Jan; Schaeffer, Philippe; Schmitt, Gaby; Schwark, Lorenz; Shah, Sunita R.; Smith, Richard W.; Smittenberg, Rienk H.; Summons, Roger E.; Takano, Yoshinori; Talbot, Helen M.; Taylor, Kyle W. R.; Tarozo, Rafael; Uchida, Masao; van Dongen, Bart E.; Van Mooy, Benjamin A. S.; Wang, Jinxiang; Warren, Courtney; Weijers, Johan W. H.; Werne, Josef P.; Woltering, Martijn; Xie, Shucheng; Yamamoto, Masanobu; Yang, Huan; Zhang, Chuanlun L.; Zhang, Yige; Zhao, Meixun; Sinninghe Damste, Jaap S. (John Wiley & Sons, 2013-12-20)
      Two commonly used proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) are the TEX86 (TetraEther indeX of 86 carbon atoms) paleothermometer for sea surface temperature reconstructions and the ...
    • An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography–mass spectrometry 

      Schouten, Stefan; Hopmans, Ellen C.; van der Meer, Jaap; Mets, Anchelique; Bard, Edouard; Bianchi, Thomas S.; Diefendorf, Aaron; Escala, Marina; Freeman, Katharine H.; Furukawa, Yoshihiro; Huguet, Carme; Ingalls, Anitra; Menot-Combes, Guillemette; Nederbragt, Alexandra J.; Oba, Masahiro; Pearson, Ann; Pearson, Emma J.; Rosell-Mele, Antoni; Schaeffer, Philippe; Shah, Sunita R.; Shanahan, Timothy M.; Smith, Richard W.; Smittenberg, Rienk; Talbot, Helen M.; Uchida, Masao; Van Mooy, Benjamin A. S.; Yamamoto, Masanobu; Zhang, Zhaohui; Sinninghe Damste, Jaap S. (American Geophysical Union, 2009-03-20)
      Recently, two new proxies based on the distribution of glycerol dialkyl glycerol tetraethers (GDGTs) were proposed, i.e., the TEX86 proxy for sea surface temperature reconstructions and the BIT index for reconstructing ...
    • Intertidal salt marshes as an important source of inorganic carbon to the coastal ocean 

      Wang, Zhaohui Aleck; Kroeger, Kevin D.; Ganju, Neil K.; Gonneea, Meagan E.; Chu, Sophie N. (John Wiley & Sons, 2016-07-18)
      Dynamic tidal export of dissolved inorganic carbon (DIC) to the coastal ocean from highly productive intertidal marshes and its effects on seawater carbonate chemistry are thoroughly evaluated. The study uses a comprehensive ...
    • Introduction to “Understanding the Ocean's biological pump : results from VERTIGO” 

      Buesseler, Ken O.; Lampitt, Richard S. (2008-04-04)
      Unknown and unexplained aspects of the human condition were the focus of a television series in the USA created by Rod Serling in the early 1960s. The term “The Twilight Zone” used in his show is even more pertinent to ...
    • Inverse estimates of anthropogenic CO2 uptake, transport, and storage by the ocean 

      Mikaloff Fletcher, Sara E.; Gruber, Nicolas; Jacobson, Andrew R.; Doney, Scott C.; Dutkiewicz, Stephanie; Gerber, Markus; Follows, Michael J.; Joos, Fortunat; Lindsay, Keith; Menemenlis, Dimitris; Mouchet, Anne; Muller, Simon A.; Sarmiento, Jorge L. (American Geophysical Union, 2006-04-05)
      Regional air-sea fluxes of anthropogenic CO2 are estimated using a Green's function inversion method that combines data-based estimates of anthropogenic CO2 in the ocean with information about ocean transport and mixing ...
    • Inverse estimates of the oceanic sources and sinks of natural CO2 and the implied oceanic carbon transport 

      Mikaloff Fletcher, Sara E.; Gruber, Nicolas; Jacobson, Andrew R.; Gloor, Emanuel; Doney, Scott C.; Dutkiewicz, Stephanie; Gerber, Markus; Follows, Michael J.; Joos, Fortunat; Lindsay, Keith; Menemenlis, Dimitris; Mouchet, Anne; Muller, Simon A.; Sarmiento, Jorge L. (American Geophysical Union, 2007-02-10)
      We use an inverse method to estimate the global-scale pattern of the air-sea flux of natural CO2, i.e., the component of the CO2 flux due to the natural carbon cycle that already existed in preindustrial times, on the basis ...
    • Inverse kinetic isotope fractionation during bacterial nitrite oxidation 

      Casciotti, Karen L. (2008-12-29)
      Natural abundance stable isotopes in nitrate (NO3-), nitrite (NO2-), and nitrous oxide (N2O) have been used to better understand the cycling of nitrogen in marine and terrestrial environments. However, in order to extract ...
    • An inverse relationship between production and export efficiency in the Southern Ocean 

      Maiti, Kanchan; Charette, Matthew A.; Buesseler, Ken O.; Kahru, Mati (John Wiley & Sons, 2013-04-23)
      In the past two decades, a number of studies have been carried out in the Southern Ocean to look at export production using drifting sediment traps and thorium-234 based measurements, which allows us to reexamine the ...
    • Investigation of extractable organic compounds in deep-sea hydrothermal vent fluids along the Mid-Atlantic Ridge 

      McCollom, Thomas M.; Seewald, Jeffrey S.; German, Christopher R. (2015-01)
      The possibility that deep-sea hydrothermal vents may contain organic compounds produced by abiotic synthesis or by microbial communities living deep beneath the surface has led to numerous studies of the organic composition ...
    • Investigations of air-sea gas exchange in the CoOP Coastal Air-Sea Chemical Exchange project 

      Edson, James B.; DeGrandpre, Michael D.; Frew, Nelson M.; McGillis, Wade R. (Oceanography Society, 2008-12)
      The exchange of CO2 and other gases across the ocean-air interface is an extremely important component in global climate dynamics, photosynthesis and respiration, and the absorption of anthropogenically produced CO2. The ...
    • IOC contributions to international, interdisciplinary open data sharing 

      Glover, David M.; Wiebe, Peter H.; Chandler, Cynthia L.; Levitus, Sydney (Oceanography Society, 2010-09)
      Over the last 50 years, the Intergovernmental Oceanographic Commission (IOC) has had a profound influence upon the willingness of United Nations Member States to share and provide access to their international and ...