Ocean colour resources

Sentinel-3 OLCI Chlorophyll Index switch for low-chlorophyll waters ATBD

This ATBD contains the description of Sentinel-3 Ocean and Land Colour Instrument (OLCI) Ocean Chlorophyll Index (CI) algorithm.

v3

OLCI Level 2 Algorithm Theoretical Basis Document Bright Pixel Correction (based on ESA Envisat MERIS reprocessing 4)

This ATBD discusses the potential approaches to Bright Pixel Atmospheric Correction.

v5.3

OLCI Level 2 Algorithm Theoretical Basis Document Confidence Check

The confidence check ATBD defines the OLCI classification flags and details of example quality flags that will provide the end users with confidence in the OLCI products.

v2.1

OLCI Level 2 Algorithm Theoretical Basis Document Glint Correction

This ATBD discusses the potential approaches to correct sun glint for OLCI.

v2

OLCI Level 2 Algorithm Theoretical Basis Document Instrumental Corrections

Comprehensive description of the OLCI's spectral characteristics and their potential impact on algorithms likely to expect data acquired at a constant wavelength.

v1.2

OLCI Level 2 Algorithm Theoretical Basis Document Ocean Colour Products in Case 1 waters

Describes the algorithms for the OLCI ocean colour products in Case 1 waters.

v2.2

OLCI Level 2 Algorithm Theoretical Basis Document Ocean Colour Turbid Water

Describes the algorithm for the determination of inherent optical properties (IOPs) and the concentration of water constituents in case 2 waters from water leaving radiance reflectance spectra to be used for OLCI.

v2.1

OLCI L2 Algorithm Theoretical Basis Document Uncertainty estimation for Case2 water IOP products

This document describes the procedures using artificial neural networks (NN) to estimate the uncertainties of the Inherent Optical Properties (IOPs) of water constituents, which are derived fromtop of atmosphere (TOA) radiance data of the Ocean Land Colour Imager (OLCI) on board the earth observing satellite Sentinel-3.

v1

OLCI Level 2 Algorithm Theoretical Basis Document Photosynthetically Active Radiation

Describes process to establish the OLCI L2 Photosynthetically Active Radiation products.

v1.2

OLCI Level 2 Algorithm Theoretical Basis Document Pixel Classification

Describes process to establish the OLCI L2 pixel classification.

v2.3

OLCI Level 2 Algorithm Theoretical Basis Document White Caps Correction

Definition of the approach to white cap correction that could be applied to OLCI.

v2

Retrieval of Total Water Vapour Content from OLCI Measurements Algorithm Theoretical Basis Document

Description of the retrieval of water vapour above from OLCI measurements above land, ocean and clouds.

v2

OLCI Level 2 Algorithm Theoretical Basis Document Correction of the impact of the absorption of atmospheric gases

Describes the impact of the relevant absorption features due to atmospheric gases within the spectral domain of OLCI.

v2.2

OLCI Level 2 Algorithm Theoretical Basis Document Transparency products

The purpose of this document is to lay out algorithms for the sea water transparency products.

v1.0

OLCI L2 pixel-by-pixel uncertainty propagation in clear water branch

ATBD on pixel-by-pixel uncertainty propagation in OLCI clear water branch.

v2

OLCI Bright Waters AC Algorithm Theoretical Basis Document

The purpose of this algorithm is to determine the correction for NIR reflectance needed for the full atmosphere correction model – applied to visible wavelengths.

v2.1

OLCI Level 2 Algorithm Theoretical Basis Document Alternative Atmospheric Correction

Describes a procedure to derive the bi-directional water leaving radiance reflectances from top of atmosphere radiance reflectance spectra of OLCI.

v1.1

OLCI Level 2 Algorithm Theoretical Basis Document Atmospheric corrections over Case 1 waters

The purpose of this document is to lay out the OLCI atmospheric correction algorithm above Case 1 waters.

v2.2