Recent Submissions

  • Bio-optical Sensors of mesoscale variability on Autonomous Floats and Gliders 

    Lewis, M. R., and H. Claustre. 2005. "Bio-optical Sensors of mesoscale variability on Autonomous Floats and Gliders." In Strategies for understanding mesoscale processes, 81-85. Monaco: CIESM.
    The Mediterranean Sea is not immune from the influence of mesoscale variability. New perspectives on previously known structures such as the Alboran gyre have emerged from satellite observations and high resolution models. ...
  • The underwater radiance distribution 

    Lewis, M., J. Wei, and R. Van Dommelen. 2010. "The underwater radiance distribution." Proceedings from the 2010 AGU Ocean Sciences Meeting.
    A significant source of uncertainty in the prediction of the apparent optical properties of the ocean is the geometrical distribution of the radiance field and its variation with respect to time and space; this uncertainty ...
  • Ocean color measurements from low-flying aircraft: Atmospheric and surface glint correction 

    Lazin, Gordana, Richard F. Davis, Aurea M. Ciotti, and Marlon R. Lewis. 1997. "Ocean color measurements from low-flying aircraft: Atmospheric and surface glint correction." Ocean Optics XIII, October 22, 1996 - October 22 2963: 703-707.
    Optical properties of sea water, such as water leaving radiance, contain valuable information about constituents of the aquatic system. Airborne remote sensing provide access to synoptic data over large spatial scales, ...
  • Field evaluation of antibiofouling compounds on optical instrumentation 

    McLean, Scott, Bryan Schofield, Giuseppe Zibordi, Marlon R. Lewis, et al. 1997. "Field evaluation of antibiofouling compounds on optical instrumentation." Ocean Optics XIII, October 22, 1996 - October 22 2963: 708-713.
    Biofouling has been a serious question in the stability of optical measurements in the ocean, particularly in moored and drifting buoy applications. Many investigators coat optical surfaces with various compounds to reduce ...
  • A new instrument for measuring the high dynamic range radiance distribution in nearsurface sea water 

    Wei, Jianwei, Ronnie Van Dommelen, Marlon R. Lewis, Scott McLean, et al. 2012. "A new instrument for measuring the high dynamic range radiance distribution in nearsurface sea water." Optics Express 20(24): 27024-27038.
    No abstract available.
  • Satellite Ocean Color Observations of Global Biogeochemical Cycles 

    LEWIS, MR. 1992. "Satellite Ocean Color Observations of Global Biogeochemical Cycles." Environmental Science Research 43: 153.
    No abstract available.
  • Chlorophyll maximums controled by underwater current and solar irradiation 

    Asanuma, Ichio, Kazuhiko Matsumoto, Takeshi Kawano, Chizuru Saitoh, et al. 1997. "Chlorophyll maximums controled by underwater current and solar irradiation." Ocean Optics XIII, October 22, 1996 - October 22 2963: 828-833.
    Through the bio-optical measurement over the equatorial warm water pool, we could discuss the vertical structure of the chlorophyll maximum. The chlorophyll-a from the surface to the top of the chlorophyll maximum layer ...
  • Retrieving composition and sizes of oceanic particle subpopulations from the volume scattering function 

    Zhang, Xiaodong, Michael Twardowski, and Marlon Lewis. 2011. "Retrieving composition and sizes of oceanic particle subpopulations from the volume scattering function." Applied Optics 50(9): 1240-1259.
    For a particle population with known size, composition, structure, and shape distributions, its volume scattering function (VSF) can be estimated from first principles through a governing relationship, the Fredholm linear ...
  • Vertical fluxes of carbon, nitrogen, and phosphorus in the North Pacific Subtropical Gyre near Hawaii 

    Christian, JR, MR Lewis, and DM Karl. 1997. "Vertical fluxes of carbon, nitrogen, and phosphorus in the North Pacific Subtropical Gyre near Hawaii." Journal of Geophysical Research-Oceans 102(C7): 15667-15677.
    The hypothesized ''biological pump'' mechanism for removing carbon from the euphotic zone to the deep ocean requires different rates of recycling of C, N, and P in sinking particles. At Station ALOHA in the subtropical ...
  • Relationships between the surface concentration of particulate organic carbon and optical properties in the eastern South Pacific and eastern Atlantic Oceans 

    Stramski, D., R. A. Reynolds, M. Babin, S. Kaczmarek, et al. 2008. "Relationships between the surface concentration of particulate organic carbon and optical properties in the eastern South Pacific and eastern Atlantic Oceans." Biogeosciences 5(1): 171-201.
    We have examined several approaches for estimating the surface concentration of particulate organic carbon, POC, from optical measurements of spectral remote-sensing reflectance, R-rs(lambda), using field data collected ...
  • Primary Production Estimates from Recordings of Solar Stimulated Fluorescence in the Equatorial Pacific at 150-Degrees-W 

    STEGMANN, PM, MR LEWIS, CO DAVIS, and JJ CULLEN. 1992. "Primary Production Estimates from Recordings of Solar Stimulated Fluorescence in the Equatorial Pacific at 150-Degrees-W." Journal of Geophysical Research-Oceans 97(C1): 627-638.
    Biological, optical, and hydrographical data were collected on the WEC88 cruise along 150-degrees-W and during a 6-day time series station on the equator during February/March 1988. This area was characterized by a subsurface ...
  • Hydrographic Patterns and Vertical Mixing in the Equatorial Pacific Along 150-Degrees-W 

    CARR, ME, NS OAKEY, B. JONES, and MR LEWIS. 1992. "Hydrographic Patterns and Vertical Mixing in the Equatorial Pacific Along 150-Degrees-W." Journal of Geophysical Research-Oceans 97(C1): 611-626.
    The WEC88 cruise sampled along a meridional transect from 15-degrees-N to 15-degrees-S along 150-degrees-W from February 17 to March 18, 1988, with a 6-day time series at the equator. The large-scale hydrographic patterns ...
  • Shipboard measurements of phytoplankton production and solar-stimulated fluorescence rates in the northwest Atlantic 

    Stegmann, PM, and MR Lewis. 1997. "Shipboard measurements of phytoplankton production and solar-stimulated fluorescence rates in the northwest Atlantic." Continental Shelf Research 17(7): 743-760.
    We present results from a cruise to the Canadian sub-arctic and the Scotian Shelf designed to evaluate optical methods for bio-optical estimation of primary productivity. Vertical profiles of temperature and chlorophyll ...
  • Remotely sensed biological production in the equatorial Pacific 

    Turk, D., MJ McPhaden, AJ Busalacchi, and MR Lewis. 2001. "Remotely sensed biological production in the equatorial Pacific." Science 293(5529): 471-474.
    A combination of ship, buoy, and satellite observations in the tropical Pacific during the period from 1992 to 2000 provides a basin-scale perspective on the net effects of El Nino and La Nina on biogeochemical cycles. New ...
  • Geographical distribution of new production in the western/central Equatorial Pacific during El Nino and non-El Nino conditions 

    Turk, Daniela, Marlon R. Lewis, Glen W. Harrison, Takeshi Kawano, et al. 2001. "Geographical distribution of new production in the western/central Equatorial Pacific during El Nino and non-El Nino conditions." Journal of Geophysical Research 106(C3): 4501-4515.
    Rates of new production in the warm waters of the tropical Pacific and their seasonal to interannual variability are estimated by measurement of (super 15) N-nitrate uptake along the equator in the western and central (145 ...
  • Implications of changing El Nino patterns for biological dynamics in the equatorial Pacific Ocean 

    Turk, D., C. S. Meinen, D. Antoine, M. J. McPhaden, et al. 2011. "Implications of changing El Nino patterns for biological dynamics in the equatorial Pacific Ocean." Geophysical Research Letters 38: 23603-L23603.
    El Nino events are known to strongly affect biological production and ecosystem structure in the tropical Pacific. Understanding and predicting biological processes in this area are hampered because the existing in situ ...
  • Polarized light field under dynamic ocean surfaces: Numerical modeling compared with measurements 

    You, Yu, George W. Kattawar, Kenneth J. Voss, Purushottam Bhandari, et al. 2011. "Polarized light field under dynamic ocean surfaces: Numerical modeling compared with measurements." Journal of Geophysical Research-Oceans 116: 0005-C00H05.
    As part of the Radiance in a Dynamic Ocean (RaDyO) program, we have developed a numerical model for efficiently simulating the polarized light field under highly dynamic ocean surfaces. Combining the advantages of the ...
  • An Example Crossover Experiment for Testing New Vicarious Calibration Techniques for Satellite Ocean Color Radiometry 

    Voss, Kenneth J., Scott McLean, Marlon Lewis, Carol Johnson, et al. 2010. "An Example Crossover Experiment for Testing New Vicarious Calibration Techniques for Satellite Ocean Color Radiometry." Journal of Atmospheric and Oceanic Technology 27(10): 1747-1759.
    Vicarious calibration of ocean color satellites involves the use of accurate surface measurements of water-leaving radiance to update and improve the system calibration of ocean color satellite sensors. An experiment was ...
  • A new instrument for measuring the high dynamic range radiance distribution in nearsurface sea water 

    Wei, Jianwei, Ronnie Van Dommelen, Marlon R. Lewis, Scott McLean, et al. 2012. "A new instrument for measuring the high dynamic range radiance distribution in nearsurface sea water." 20(24): 27024-27038
    A new instrument for measuring the full radiance distribution in the ocean interior is introduced. The system is based on CMOS technology to achieve intra-scene dynamic range of 6 decades and system dynamic range of more ...
  • Optical influence of ship wakes 

    Zhang, XD, M. Lewis, WP Bissett, B. Johnson, et al. 2004. "Optical influence of ship wakes." Applied Optics 43(15): 3122-3132.
    The optical variations observed within ship wakes are largely due to the generation of copious amounts of air bubbles in the upper ocean, a fraction of which accumulate as foam at the surface, where they release scavenged ...

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