POSTER SESSION 3
15:30–17:30, Wednesday, September 16
Poster Session | 1 | 2 | 3 | 4 | Schedule at a Glance
ABSTRACT 1169 | POSTER 79
MAPPING PHYTOPLANKTON FLUORESCENCE PROPERTIES WITH HYPERSPECTRAL ENMAP DATA
Phytoplankton exhibits a characteristic fluorescence peak near 685 nm with a full width at half maximum of approximately 25 nm. At high concentrations, the emission wavelength (λe) may shift toward longer wavelengths due to reabsorption effects. The fluorescence quantum yield (Φ), defined as the ratio of emitted to absorbed photons within the 400–700 nm spectral range, quantifies the efficiency of photosynthesis and serves as a key indicator of light stress and nutrient limitation in primary production. We present a method to retrieve Φ and λe from hyperspectral measurements using inverse modeling. This approach has been implemented in the software WASI. Initial results demonstrate the capability to map Φ and λe, alongside phytoplankton composition and concentration, using hyperspectral data from the EnMAP sensor under conditions of high chlorophyll-a concentrations.
Peter Gege, DLR, [email protected], https://orcid.org/0000-0003-0939-5267
Krista Alikas, University of Tartu, [email protected]
Kersti Kangro, University of Tartu, [email protected]
Nicole Pinnel, German Aerospace Center (DLR), [email protected]
Stefan Plattner, German Aerospace Center (DLR), [email protected]
Ian Somlai-Schweiger, German Aerospace Center (DLR), [email protected]
Mirjam Uusõue, University of Tartu, [email protected]
Poster Session | 1 | 2 | 3 | 4 | Schedule at a Glance
