Browsing Cullen, John by Author "Cullen, J. J."
Now showing items 1-6 of 6
-
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:10.1029/95JC00454There 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 ... -
Calculation of UV attenuation and colored dissolved organic matter absorption spectra from measurements of ocean color
This article first appeared in: Johannessen, S. C., W. L. Miller, and J. J. Cullen. 2003. "Calculation of UV attenuation and colored dissolved organic matter absorption spectra from measurements of ocean color." Journal of Geophysical Research 108(C9): 13-13. DOI: 10.1029/2000JC000514No abstract available. -
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: 10.1029/94JC00603The 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_2.1223Concerns 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:10.1029/91JC01320Macronutrients 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 ...