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This document provides a detailed specification of the changes made in the MERIS 3rd Reprocessing


This document provides a precise of the nature of the changes in the Level 1 and Level 2 products.


This document is part of the ENVISAT commissioning plan, dedicated to the commissioning of the MERIS G/S, including the full in-flight calibration and re-characterisation of MERIS. Its purpose is to define the detailed plan of all the activities required to achieve the validation of the level 1b and verification of level 2 processing, including : algorithms, auxiliary products, in-flight calibration, and instrument performance. In addition, this document provides the relevant inputs to the MERIS mission planning to be prepared in advance to the launch for the whole commissioning period.


This document provides a detailed specification of the MERIS Level 1B processing algorithms in terms of algorithms and data. This document is intended to serve as a functional requirements specification for the MERIS data processing entities within the ENVISAT-1 ground segment.


This document is intended to provide a detailed overview of the MERIS IPF releases further installed at ESA processing centres. The description of the different processor upgrades is given, in terms of both data format changes and algorithm modifications, with the aim to help the user community in understanding the impact of IPF modifications on MERIS data quality.


The specifications provided in this document define the parameters to be used to generate inherent optical properties for the oceanic and atmospheric components as a function of geophysical properties and wavelengths, which can be the basis upon which to generate test data and auxiliary parameters needed for operation and end-to-end tests of the MERIS ground segment processor (i.e. mostly to generate water reflectances or total reflectances at top of the atmosphere level). Parameters have been selected from various measurements and models in water, surface and atmosphere. The underlying geo-physical models are the same as those of the MERIS geophysical algorithms, as described in the MERIS Algorithm Theoretical Basis Document (ATBD) PO-TN-MEL-GS-0005 (Iss. 4.1).


MERIS is an imaging spectrometer aboard of ESA's ENVISAT environmental satellite. It operates in the reflective solar spectral range (390 nm to 1040 nm) with fifteen spectral bands. The instrument has a field of view of 68.5o and covers a swath width of 1150 km. The field of view is shared between five identical optical modules arranged in a fan fan-shape configuration.


Spectral Campaign Unavaiability List. This document is intended to provide a detailed list of orbits for which nominal data is not available due to specific instrument settings preventing their processing to nominal Level 1B or Level 2 products.


MERIS Wavelengths and Iraddiances Model 2004


The purpose of this document is to describe the radiative transfer processes simulated within a coupled 'Atmosphere-Land/Ocean' system by two different codes developed by « Freie Universität Berlin » (FUB) in Germany and « Laboratoire Interdisciplinaire en Sciences de l'Environnement - Université du Littoral (LISE/UdL) in France.

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