CT24B:
New Approaches to Opening DOM's "Black Box" Using Its Optical and Chemical Properties Posters


Session ID#: 22989

Session Description:
Investigations focusing on chromophoric dissolved organic matter (CDOM) – dissolved organic matter (DOM) that absorbs light – and the subset of compounds that further exhibit fluorescence (FDOM) are key in tracing production, turnover and mineralisation of DOM in aquatic environments and resolving its role as a carbon reservoir and microbial substrate within the context of biogeochemical cycling of carbon and other elements. The spectroscopic properties of CDOM and FDOM are increasingly being used as proxies for the chemical composition of DOM in freshwater, estuarine and marine waters, and tracing its mixing and fate. Sensor development and high sampling frequency offer great potential. However, these data also provide numerous analytical challenges, such as linking DOM’s optical properties and chemical composition. This session invites contributions offering insight into methodological developments and novel applications of optical and chemical characterization of DOM from all aquatic environments as well as CDOM’s role in radiative transfer. We welcome contributions that focus on optical signals and biogeochemical properties of DOM at interfaces: terrestrial-aquatic, land-ocean, ocean-atmosphere, benthic-pelagic, dissolved-particulate, water-sediment. We also welcome contributions that utilize remote sensing and in situ monitoring to make connections between optical and chemical properties of organic matter and quantify fluxes across the aforementioned interfaces.
Primary Chair:  John R Helms, Morningside College, Biology and Chemistry Department, Sioux City, IA, United States
Co-chairs:  Urban Johannes Wünsch1, Colin A Stedmon1 and Chris L Osburn2, (1)Technical University of Denmark, National Institute of Aquatic Resources, Kgs. Lyngby, Denmark(2)North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States
Moderators:  Urban Johannes Wünsch1, Chris L Osburn2 and Colin A Stedmon1, (1)Technical University of Denmark, National Institute of Aquatic Resources, Kgs. Lyngby, Denmark(2)North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States
Student Paper Review Liaison:  John R Helms, Morningside College, Biology and Chemistry Department, Sioux City, IA, United States
Index Terms:

4264 Ocean optics [OCEANOGRAPHY: GENERAL]
4803 Analytical chemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4850 Marine organic chemistry [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • CD - Coastal Dynamics
  • E - Estuarine Processes
  • IS - Ocean Observatories, Instrumentation and Sensing Technologies

Abstracts Submitted to this Session:

Optical Characterization of Chromophoric Dissolved Organic Matter (CDOM) at the Water Sediment Interface in a Southern California Salt Marsh (303627)
Catherine Dawne Clark, Western Washington University, Chemistry, Bellingham, WA, United States, Warren J De Bruyn, Chapman Univ, Orange, CA, United States and Jennifer Bowen, Scripps Institution of Oceanography, Geosciences Research Division, La Jolla, United States
New insights on dissolved organic matter in the Mediterranean Sea: basin-wide distribution and drivers of the coloured and fluorescent fractions and it relationship to molecular structure (308509)
Teresa S. Catalá1, Alba Martínez-Pérez2, Mar Nieto-Cid2, Marta Álvarez3, Helena Osterholz1, Jaime Otero2, Mikhail Emelianov3, Isabel Reche4, Javier Aristegui5, Thorsten Dittmar6 and Xosé Antón Álvarez-Salgado2, (1)Research Group for Marine Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University Oldenburg, Oldenburg, Germany, (2)Consejo Superior de Investigaciones Científicas - Instituto de Investigacións Mariñas (CSIC-IIM), Vigo, Spain, (3)IEO Centro Oceanográfico de A Coruña, A Coruña, Spain, (4)Departamento de Ecología and Instituto del Agua, Universidad de Granada, Granada, Spain, (5)Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain, (6)Carl von Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany
Coupling multi-detector data for DOM characterization using a novel data fusion approach (310154)
Urban Johannes Wünsch, Technical University of Denmark, National Institute of Aquatic Resources, Kgs. Lyngby, Denmark, Evrim Acar, University of Copenhagen, Department of Food Sciences, Copenhagen, Denmark, Boris P Koch, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Ecological Chemistry, Bremerhaven, Germany and Colin A Stedmon, Technical University of Denmark, National Institute for Aquatic Resources, Kgs. Lyngby, Denmark
Optical Properties of Dissolved Organic Matter and Humic Substances in a River-Influenced Coastal Environment (310195)
Chia-Jung Lu, Mizuki Ueno, Hideki Fukuda and Hiroshi Ogawa, The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Chiba, Japan
Mixing Behavior of the Chromophoric Dissolved Organic Matter in the Pearl River Estuary in Spring (310988)
Xia Lei, Chinese University of Hong Kong, Shatin, Hong Kong
Chromophoric Dissolved Organic Matter in the NAAMES Study (314261)
Norman B Nelson, University of California Santa Barbara, Santa Barbara, CA, United States, Craig A Carlson, University of California Santa Barbara, Marine Science Institute/Department of Ecology, Evolution and Marine Biology, Santa Barbara, United States, Dr. James George Allen, Earth Research Institute, Santa Barbara, United States and David Siegel, University of California Santa Barbara, Santa Barbara, United States
A new glider fluorescence sensor for monitoring dissolved aromatic hydrocarbons near offshore or industrial installations. (316607)
Madeleine Goutx, CNRS, Marseille, France, Marc Tedetti, Aix Marseille Univ., Université de Toulon, CNRS, IRD, MIO, Marseille, France. Water - Environment - Oceanography (WEO) Department, University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam., Aix-Marseille Université, CNRS/INSU UM 110, Marseille, France and Frederic Cyr, Fisheries and Oceans Canada, Northwest Atlantic Fisheries Centre, St. John's, NF, Canada
Variability in DOM Optical Signatures Across a Small Lake Superior Tributary Watershed. (318038)
Karl Michael Meingast, Michigan Technological University, Houghton, MI, United States and Evan S Kane, Michigan Technological University, College of Forest Resources and Environmental Sciences, Houghton, United States
Investigating Marine Dissolved Organic Matter Fluorescence Transformations with Organic Geochemical Proxies in a Growth and Degradation Experiment Using Amino Acids, Amino Sugars, and CuO Oxidation Products (318166)
Michael R Shields, University of Florida, Department of Geological Sciences, Gainesville, FL, United States, Thomas S S Bianchi, University of Florida, Department of Geological Sciences, Gainesville, United States, Chris L Osburn, North Carolina State University Raleigh, Raleigh, NC, United States, Joanna D Kinsey, North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States, Kai Ziervogel, University of New Hampshire, Ocean Process Analysis Laboratory, Durham, United States and Astrid Schnetzer, North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, United States
Seeing Molecules from Space: How CDOM Absorption Influences Remotely-sensed Reflectance and Satellite-derived Estimates of CDOM Composition (319774)
Brice Grunert1, Colleen B Mouw2, Karl Michael Meingast1 and Audrey Ciochetto2,3, (1)Michigan Technological University, Houghton, MI, United States, (2)University of Rhode Island, Narragansett, RI, United States, (3)University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Formation of Chromophoric Dissolved Organic Matter by Bacterial Degradation of Phytoplankton-derived Aggregates: A Case for the Charge Transfer Model (320659)
Chris L Osburn1, Joanna D Kinsey1, Michael R Shields2, Thomas S S Bianchi3, Astrid Schnetzer4, Kai Ziervogel5 and Dr. Gabrielle Corradino6, (1)North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, NC, United States, (2)University of Florida, Department of Geological Sciences, Gainesville, FL, United States, (3)University of Florida, Department of Geological Sciences, Gainesville, United States, (4)North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, United States, (5)University of New Hampshire, Ocean Process Analysis Laboratory, Durham, United States, (6)Barnard College of Columbia University, Department of Biology, New York, United States
Composition and size-distribution of dissolved organic matter in the two largest Great Lakes: Lakes Superior and Michigan (321631)
Hui Lin, University of Wisconsin-Milwaukee, School of Freshwater Sciences, Milwaukee, WI, United States, Dong Joo Joung, Univeristy of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States, John D Kessler, University of Rochester, Department of Earth and Environmental Sciences, Rochester, NY, United States and Laodong Guo, Univ of Wisconsin-Milwaukee, Milwaukee, WI, United States
Differential effects of solid-phase extraction resins on the measurement of dissolved lignin-phenols and organic matter composition in natural waters (323120)
Ana R. Arellano, University of Florida, Geological Sciences, Ft Walton Beach, United States, Thomas S S Bianchi, University of Florida, Department of Geological Sciences, Gainesville, United States, Michael R Shields, University of Florida, Ft Walton Beach, FL, United States, Jack A Hutchings, University of Florida, Gainesville, FL, United States and Xingqian Cui, Shanghai Jiao Tong University, School of Oceangraphy, Shanghai, China
Sources of Dissolved Organic Matter in Rocky Intertidal Zones: Optical Characterization of Photochemically Released Dissolved Organic Matter from Rockweed (Esp. Fucus spiralis, Fucus vesiculosus and Ascophyllum nodosum) and Rockweed Detritus (325048)
John R Helms, Nicci A McGuire and Oscar Alvarez Cancel, Morningside College, Biology and Chemistry Department, Sioux City, IA, United States

See more of: Chemical Tracers, Organic Matter and Trace Elements