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In vivo absorption spectra, pigment concentrations from algal cultures, and field samples (Po Delta, Northern Italy) are analyzed to differentiate the contribution by each optically active constituent to the total absorption by the water. The results yield systematic trends in the blue:red and blue:near infrared (NIR) absorption ratio for living phytoplankton cells and detrital material, which are then used to retrieve the absorption coefficient of dissolved organic material (yellow substance) at 410 nm from the total in vivo absorption coefficients of natural waters at 410 nm, 670 nm, and 730 nm. A simple model has then been applied to retrieve in situ absorption coefficient by yellow substance and for different values of blue:red/NIR absorption ratios.

Additional information

Authors: FERRARI G M, JRC Ispra (IT);HOEPFFNER N, JRC Ispra (IT);MINGAZZINI M, Consiglio Nazionale delle Ricerche, Water Research Institute, Brugherio (IT)
Bibliographic Reference: Article: Remote Sens. Environm., Vol. 58 (1996) pp. 69-80
Record Number: 199710592 / Last updated on: 1997-05-09
Original language: en
Available languages: en
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