Ocean Science www.ocean-sci.net 1812-0784 1812-0792 5 4 2009 10.5194/os-5-661-2009 http://www.ocean-sci.net/5/661/2009/ http://www.ocean-sci.net/5/661/2009/os-5-661-2009.html http://www.ocean-sci.net/5/661/2009/os-5-661-2009.pdf 661 684 2009-12-10 Optical tools for ocean monitoring and research C. Moore casey@wetlabs.com A. Barnard P. Fietzek M. R. Lewis H. M. Sosik S. White O. Zielinski WET Labs, Inc., Corvallis, Oregon, USA Leibniz Institute of Marine Sciences, Chemical Oceanography, University of Kiel, Kiel, Germany Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada, Satlantic, Inc. Halifax, Nova Scotia, Canada Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA Institute for Marine Resources, University of Applied Sciences, Bremerhaven, Germany Requirements for understanding the relationships between ocean color and suspended and dissolved materials within the water column, and a rapidly emerging photonics and materials technology base for performing optical based analytical techniques have generated a diverse offering of commercial sensors and research prototypes that perform optical measurements in water. Through inversion, these tools are now being used to determine a diverse set of related biogeochemical and physical parameters. Techniques engaged include measurement of the solar radiance distribution, absorption, scattering, stimulated fluorescence, flow cytometry, and various spectroscopy methods. Selective membranes and other techniques for material isolation further enhance specificity, leading to sensors for measurement of dissolved oxygen, methane, carbon dioxide, common nutrients and a variety of other parameters. Scientists are using these measurements to infer information related to an increasing set of parameters and wide range of applications over relevant scales in space and time. % vor jede Referenz Aas, E. and Højerslev, N. K.: Analysis of underwater radiance observations: Apparent optical properties and analytical functions describing the angular radiance distribution, J. Geophys. Res., 104, 8015–8024, 1999 Adornato, L. R., Kaltenbacher, E. A., Greenhow, D. R., and Byrne, R. H.: High-Resolution/In Situ/Analysis of Nitrate and Phosphate in the Oligotrophic Ocean, Environ. Sci. Technol., 41, 4045–4052, 2007. Alliance of Coastal Technologies (ACT): Protocols for Verifying the Performance of In Situ Chlorophyll Fluorometers. 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