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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 25, Iss. 3 — Feb. 1, 1986
  • pp: 448–456

Factor analysis of multispectral radiances over coastal and open ocean water based on radiative transfer calculations

Juergen Fischer, Roland Doerffer, and Hartmut Grassl  »View Author Affiliations


Applied Optics, Vol. 25, Issue 3, pp. 448-456 (1986)
http://dx.doi.org/10.1364/AO.25.000448


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Abstract

Factor analysis is applied to multispectral (seventeen wavelengths) radiances simulated by a radiative transfer model (matrix-operator method) in and above coastal and open ocean waters. The calculated radiances were compared with measured radiances before applying factor analysis. They agree well for different sun elevations and even for turbid coastal waters. The factor analysis technique allows us to extract the characteristic signatures of phytoplankton, suspended matter, and yellow substance. The fluorescence of chlorophyll at λ = 685 nm is found to be a clear signal for phytoplankton, also in the presence of other suspensions and yellow substance. A comparison of different algorithms for the extraction of the fluoresence peak favors the addition of chlorophyll absorption at λ = 670 nm. The blue-green ratio is found to be useless for chlorophyll detection in coastal waters. Suspended matter and yellow substance can also clearly be seen in the factor loading for all multispectral radiances analyzed. However, suspended matter is reflected more strongly than yellow substance.

© 1986 Optical Society of America

History
Original Manuscript: August 23, 1985
Published: February 1, 1986

Citation
Juergen Fischer, Roland Doerffer, and Hartmut Grassl, "Factor analysis of multispectral radiances over coastal and open ocean water based on radiative transfer calculations," Appl. Opt. 25, 448-456 (1986)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-25-3-448


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References

  1. H. R. Gordon, D. K. Clark, J. L. Mueller, W. A. Howis, “Phytoplankton Pigments from Nimbus 7 Coastal Zone Color Scanner: Comparisons with Surface Measurements,” Science 210, 63 (1980). [CrossRef] [PubMed]
  2. H. R. Gordon, D. K. Clark, J. W. Brown, O. B. Brown, R. H. Evans, W. W. Bromkow, “Phytoplankton Pigment Concentrations in the Middle Atlantic Bight: Comparison of Ship Determinations and CZCS Estimates,” Appl. Opt. 22, 20 (1983). [CrossRef] [PubMed]
  3. NASA Earth Observing System, NASA TM-86129, 55 (1984).
  4. J. F. R. Gower, “Observations of In Situ Fluorescence of Chlorophyll a in Saavich Inlet,” Boundary-Layer Meteorol. 18, 235 (1980). [CrossRef]
  5. J. F. R. Gower, G. A. Borstad, “Use of the In Vivo Fluorescence Line at 685 μm for Remote Sensing Surveys of Surface Chlorophyll a,” in Oceanography from Space, J. F. R. Gower, Ed. (Plenum, New York, 1981), pp. 329–338. [CrossRef]
  6. J. Fischer, “Remote Sensing of Suspended Matter, Phytoplankton and Yellow Substances over Coastal Waters; Part 1: Aircraft Measurements,” Mitt. Geol. Palaeontol. Inst. Univ. Hamburg 55, 85 (1983).
  7. R. Doerffer, “Remote Sensing of Exceptional Plankton Blooms,” Forschungszentrum Geesthacht GmbH (1984).
  8. U. Forstner, W. Salomons, “Trace Metal Analysis on Polluted Sediments, Part 1: Assessment of Sources and Intensities, and Part 2: Evaluation of Environmental Impact,” Environ. Technol. Lett. 1, 494 (1980). [CrossRef]
  9. R. Doerffer, “Factor Analysis in Ocean Color Interpretation,” in Oceanography from Space, J. F. R. Gower, Ed. (Plenum, New York, 1981), pp. 339–345. [CrossRef]
  10. J. F. R. Gower et al., “The Information Content of Different Optical Spectral Ranges for Remote Chlorophyll Estimation in Coastal Waters,” Int. J. Remote Sensing 5, 349 (1984). [CrossRef]
  11. J. Fischer, “On the Information Content of Multispectral Radiance Measurements over an Ocean,” Int. J. Remote Sensing 6, 773 (1985). [CrossRef]
  12. U. Uberla, Faktorenanalyse (Springer-Verlag, Berlin, 1971). [CrossRef]
  13. G. N. Plass, G. W. Kattawar, F. E. Catchings, “Matrix Operator Theory of Radiative Transfer. 1: Rayleigh Scattering,” Appl. Opt. 12, 314 (1973). [CrossRef] [PubMed]
  14. H. R. Gordon, “Diffuse Reflectance of the Ocean: The Theory of Its Augmentation by Chlorophyll a Fluorescence at 685 nm,” Appl. Opt. 18, 1161 (1979). [CrossRef] [PubMed]
  15. J. Fischer, H. Grassl, “Radiative Transfer in an Atmosphere-Ocean System: An Azimuthally Dependent Matrix-Operator Approach,” Appl. Opt. 23, 1032 (1984). [CrossRef] [PubMed]
  16. P. Koepke, “Aerosol Optical Thickness in the German Bight during MARSEN,” Eurasep Secretariat Newsletter (IRC, Ispra) No. 4 (1981).
  17. E. P. Shettle, R. W. Fenn, “Models of the Atmospheric Aerosols and their Optical Properties,” AGARD Conf. Proc.183 (1976).
  18. H. Neckel, D. Labs, “Improved Data of Solar Spectral Irradiance from 330 to 1250 μm,” Sol. Phys. 74, 231 (1981). [CrossRef]
  19. L. Prieur, S. Sathyendranath, “An Optical Classification of Coastal and Oceanic Waters Based on the Specific Absorption Curves of Phyloplankton Pigments, Dissolved Organic Matter, and Other Particulate Materials,” Limnol. Oceanogr. 26, 671 (1981). [CrossRef]
  20. N. K. Hojerslev, “On the Origin of Yellow Substance in Marine Environment,” in Proceedings, Workshop on Eurasep OCS Experiment (1979), pp. 13–28.
  21. R. Doerffer, “The Distribution of Substances in the Elbe-Estuary Determined by Remote Sensing,” Arch. Hydrobiol. Suppl. 43, 119 (1979).
  22. A. Morel, “In-Water and Remote Measurements of Ocean Color,” Boundary-Layer Meteorol. 18, 177 (1980). [CrossRef]

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