PHYBOM (PHYtoplankton-Based Optical Model) is a bio-optical model that simulates the bulk Inherent Optical Properties (IOP) of a water body, based on the taxonomic and/or pigment composition of phytoplankton populations. The absorption spectra of phytoplankton are constructed from the concentration of chlorophylls, carotenoids and phycobilins, accounting for the package effect, whereas the average cell size (Equivalent Spherical Diameter) is used to simulate the scattering properties from the Equivalent Algal Population (EAP) specific coefficients, distinguishing between Eukaryote or Cyanobacteria cell types. If the cell sizes or pigment composition are not known, the simulation can start by simply defining the total Chlorophyll-a concentration (Chl-a) and any combination of the main freshwater phytoplankton classes, expressed as percentage of the total Chl-a. The model also computes the IOP of Chl-a-correlated organic detritus, different types of Non-Algal Particles (NAP) and Colored Dissolved Organic Matter (CDOM). Linked to the Radiative Transfer Code Hydrolight (HL), PHYBOM can simulate the Remote Sensing Reflectance of optically complex water bodies for a large variety of environmental conditions. The model was calibrated and validated with an extensive database of limnological, bio-optical and radiometric in situ data, acquired in lakes and reservoirs in Spain. It is being used for the development of inversion algorithms for the remote sensing of Phytoplankton Functional Types (PFT) in the RESSBIO project (REmote Sensing Spectroscopy for wetlands BIOdiversity).
Primary Presenter: Antonio Ruiz-Verdú, University of Valencia (antonio.ruiz@uv.es)
Authors:
Carolina Tenjo, University of Valencia ()
Xavier Sòria-Perpinyà, University of Valencia ()
Esther Patricia Urrego, University of Valencia (antonio.ruiz@uv.es)
Jesús Delegido, University of Valencia (antonio.ruiz@uv.es)
Juan Miguel Soria, University of Valencia (antonio.ruiz@uv.es)
PHYBOM: A PHYTOPLANKTON-BASED MODEL FOR THE REMOTE SENSING SIGNAL SIMULATION OF OPTICALLY COMPLEX WATERS.
Category
Scientific Sessions > SS102 Inland and Coastal Aquatic Ecosystems Monitoring from In Situ and Satellite Radiometric Measurements
Description
Time: 11:30 AM
Date: 9/6/2023
Room: Sala Menorca A