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April 24, 2026Remote SensingOpen Access

Spectral Absorption Characteristics and Phytoplankton Dynamics Across Optical Water Types: Evaluating Sentinel-2 and Sentinel-3 Phytoplankton Absorption Retrieval Accuracy in Boreal Lakes

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Authors

KKKersti KangroAAAve Ansper-ToomsaluKAKrista Alikas

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Overview

Evaluates satellite Chl-a detection in boreal lakes, suggesting improvements for accurate monitoring.

Key Points

  • The study aims to assess the accuracy of chlorophyll-a detection from remote sensing in boreal lakes based on phytoplankton absorption characteristics.
  • Conducted in situ measurements of phytoplankton absorption coefficients
  • Used Sentinel-2 and Sentinel-3 data with the Case-2-Regional-Coast-Colour processor
  • Classified water types based on remote sensing reflectance features.
  • Strong linear relationships between phytoplankton absorption and chlorophyll-a across optical water types
  • Satellites overestimated small absorption values and underestimated larger ones
  • Median absolute percentage differences in chlorophyll-a estimates approached 100% for various optical water types.

Cite This Study

Kangro et al. (2026) studied this question.

synapsesocial.com/papers/69eb0bfa553a5433e34b5750https://doi.org/10.3390/rs18091273
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