Browsing Oceanography Faculty Research, Publications and Presentations by Author "Lewis, M. R."

Now showing items 1-5 of 5

  • Biological processes and optical measurements near the sea surface: Some issues relevant to remote sensing 

    Cullen, J. J., and M. R. Lewis. 1995. "Biological processes and optical measurements near the sea surface: Some issues relevant to remote sensing." Journal of Geophysical Research.C.Oceans 100(C7): 13-13,266. DOI:10.1029/95JC00454
    There is good evidence that bio-optical relationships are altered near the surface: (1) the fluorescence yield from chlorophyll declines, leading to bias in the estimation of pigment from fluorometry; (2) the modeled ...

  • New production in the warm waters of the Tropical Pacific Ocean 

    Pena, MA, M. R. Lewis, and J. J. Cullen. 1994. "New production in the warm waters of the Tropical Pacific Ocean." Journal of Geophysical Research.C.Oceans 99(C7): 14-14,268. DOI: 10.1029/94JC00603
    The average depth-integrated rate of new production in the tropical Pacific Ocean was estimated from a calculation of horizontal and vertical nitrate balance over the region enclosed by the climatological 26 degree C ...

  • Optical detection and assessment of algal blooms 

    Cullen, J. J., A. M. Ciotti, R. F. Davis, and M. R. Lewis. 1997. "Optical detection and assessment of algal blooms." Limnology and Oceanography 42(5): 1223-1239. DOI:10.4319/lo.1997.42.5_part_2.1223
    Concerns about harmful algal blooms (HABs) have grown in recent years. There is a pressing need for robust, quantitative, and cost-effective methods to detect and characterize algal blooms. Critical applications of these ...

  • Photosynthetic characteristics and estimated growth rates indicate grazing is the proximate control of primary production in the Equatorial Pacific 

    Cullen, J. J., M. R. Lewis, C. O. Davis, and R. T. Barber. 1992. "Photosynthetic characteristics and estimated growth rates indicate grazing is the proximate control of primary production in the Equatorial Pacific." Journal of Geophysical Research.C.Oceans 97(C1): 639-654. DOI:10.1029/91JC01320
    Macronutrients persist in the surface layer of the equatorial Pacific Ocean because the production of phytoplankton is limited. Measurements of photosynthesis as a function of irradiance (P-I) provide information on the ...

  • Relationships between vertical mixing and photoadaptation of phytoplankton: Similarity criteria 

    Lewis, M. R., J. J. Cullen, and T. Platt. 1984. "Relationships between vertical mixing and photoadaptation of phytoplankton: Similarity criteria." Marine ecology progress series.Oldendorf 15(1-2): 141-149.
    In their natural environment phytoplankton are exposed to fluctuations in incident irradiance due to vertical displacements in the water column induced by turbulent fluid motion. A reaction-diffusion model is analyzed to ...