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Proceedings Article

An attempt to use measurements of sun-induced chlorophyll fluorescence to estimate chlorophyll a concentration in the Baltic Sea

[+] Author Affiliations
Miroslawa Ostrowska, Miroslaw Darecki, Bogdan Wozniak

Institute of Oceanology (Poland)

Proc. SPIE 3222, Earth Surface Remote Sensing, 528 (December 30, 1997); doi:10.1117/12.298178
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From Conference Volume 3222

  • Earth Surface Remote Sensing
  • Giovanna Cecchi; Edwin T. Engman; Eugenio Zilioli
  • London, United Kingdom | September 21, 1997

abstract

The possibility of using natural fluorescence -- sun-induced chlorophyll a fluorescence (SICF) in remote sensing and/or contact investigations of chlorophyll a concentration (Ca) has often been discussed in recent years. The relationship between chlorophyll a concentration (Ca) and chlorophyll a fluorescence at 683 nm seems to evident and suggests a method of obtaining the Ca concentration on the basis of SICF intensity. Unfortunately this relationship is not as direct as we would like because SICF depends on numerous physiological properties of phytoplankton like fluorescence quantum yield and light absorption capacity which depend on an environmental factors. The influence of these parameters on SICF is shown in this paper and the relationships are presented. Using these we made attempt to achieve the direct functional dependence between the natural fluorescence (obtained from the upward reflectance coefficient spectrum measured at 665, 683 and 710 nm) and the chlorophyll a concentration. The analysis carried out in this study shows that the possibility determining Ca concentrations is limited to great optical depths in the sea ((tau) greater than 3). However using SICF for estimation Ca in the surface layer is probably impossible.

© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Miroslawa Ostrowska ; Miroslaw Darecki and Bogdan Wozniak
"An attempt to use measurements of sun-induced chlorophyll fluorescence to estimate chlorophyll a concentration in the Baltic Sea", Proc. SPIE 3222, Earth Surface Remote Sensing, 528 (December 30, 1997); doi:10.1117/12.298178; http://dx.doi.org/10.1117/12.298178


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