Ocean Colour Fluorescence Product

This study aims to be a scientific investigation and development of an ocean colour Fluorescence product from Copernicus Sentinel-3 OLCI and the implementation of a product validation and review process.

Ocean Colour Fluorescence Product

Objectives
Overview
Schedule
Study Meetings
Contact

 

Objectives

  1. Review user requirements for an OLCI phytoplankton Fluorescence product.
  2. Review the current state-of-the-art in Fluorescence developments and possibilities for innovation to enhance product performance, particularly using OLCI extended spectral capabilities.
  3. Propose a Fluorescence algorithm that meets user requirements and is accurate and robust.
  4. Define the OLCI Fluorescence product and the uncertainties product.
  5. Prototype the OLCI Fluorescence algorithm.
  6. Validate the OLCI Fluorescence product.
  7. Propose a Fluorescence product uncertainty requirement for the OLCI mission.
  8. Provide independent scientific feedback.

Overview

We proposed an algorithm, where two Gaussian functions, an exponential decay and an offset are fitted to OLCI TOA radiances.

 
 
 
 

With
O = offset, accounting for atmospheric and oceanic scattering processes
S = slope factor, accounting for atmospheric and oceanic scattering processes
A = factor of gaussian function at λA (absorption minimum of chlorophyll)
F = factor of gaussian function at λF (chlorophyll fluorescence peak)
λA = center wavelength of the gaussian absorption minimum of chlorophyll
λF = center wavelength of the gaussian fluorescence maximum of chlorophyll
wF = width of the gaussian fluorescence of chlorophyll
wA = width of the gaussian absorption of chlorophyll

Figure 3
 
Figure 3: Proposed fluorescence fit equation and typical fluorescence and absorption peaks

Schedule

Phase Details
Kick-Off 21/09/2018
Duration 12 months
Status Ongoing
WP0 Project Management
WP1 Review of user requirements for an OLCI phytoplankton Fluorescence product
WP2 Review the current state-of-the-art in Fluorescence developments
WP3 Fluorescence algorithm that meets user requirements and is accurate and robust
WP4 Definition of OLCI Fluorescence product and the uncertainties product
WP5 Prototype OLCI Fluorescence algorithm
WP6 Validation of OLCI Fluorescence product
WP7 Scientific community feedback and active communication

Study Meetings

Phase Date and location
KO 21/09/2018, Tallinn, Estonia
Mid-term review 03/2019, EUMETSAT
Final review 09/2019, EUMETSAT

Contact

EUMETSAT Project Manager
Dr Ewa Kwiatkowska
Ocean Colour Radiometry Team Leader
Marine Applications
Remote Sensing and Products Division
EUMETSAT
Email
Prof. Dr Jürgen Fischer
Spectral Earth GmbH, Baselerstr. 91a, 12205 Berlin
Email
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