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Sentinel-1 Product Definition

This document defines the complete Sentinel-1 product family generated by the Sentinel-1 Instrument Processing Facility (IPF). The document also provides a brief overview of the Sentinel-1 instrument, the operational modes and their characteristic parameters, and the auxiliary data used for the generation of the products and the applications which may use Sentinel-1 products.

Sentinel-5P NPP Cloud Processor ATBD

This document describes the theoretical basis of the algorithm which will be used for the Sentinel-5P-NPP Cloud product.

Sentinel-3 OLCI-B spectral response functions from pre-flight characterisation

In the frame of pre-launch activities for the Sentinel-3 OLCI-B instrument, a first version of the instrument Spectral Response Functions (SRF) based on on-ground characterisation measurements was derived. They are described in this document.


This document is the Algorithm Theoretical Basis Document (ATBD) for TROPOMI sulphur dioxide (SO2) vertical column data products, measured in the ultraviolet part of the electromagnetic spectrum.


This document describes the prototype algorithm for the retrieval of formaldehyde columns from TROPOMI measurements in the UV part of the spectrum.

Sentinel-5P TROPOMI Methane retrieval ATBD

The purpose of this document is to describe the algorithm baseline of the algorithm that will be used to retrieve the column average dry air mixing ratio of methane, XCH4, from Sentinel-5 Precursor (S5P) measurements, the input and ancillary data that is needed, and the output that will be generated. In addition, information about expected calculation times, and the expected accuracy are provided.

Sentinel-5P TROPOMI Aerosol Layer Height Product ATBD

This document is the Algorithm Theoretical Basis Document (ATBD) for the Tropospheric Monitoring Instrument's (TROPOMI) Aerosol Layer Height (ALH) product.

Sentinel-5P TROPOMI Science Verification Report

The intention of this document is to collect information on the verification within the Sentinel-5P L2 project. This includes details of all the verification algorithms used, their settings and the main differences to the operational prototype algorithms. It also includes information on the set-up of the various verification activities on synthetic data based on a small number of simple scenarios, real data from other sensors and realistic S5P data. Finally, it summarises the results from the pre-launch verification activities.

Sentinel-5P Level 1b and Level 2 Numbered Validation Requirements

This document summarises the validation requirements for all Sentinel-5 Precursor Level 2 products. These will be used in the compilation of the Science Validation Implementation Plan in order to allow a tracing between the validation projects and the validation needs, identifying potential synergies and gaps.

Sentinel-1A TOPS Radiometric Calibration Refinement

Following a calibration campaign that took place during spring/summer 2015, a new processing baseline is in place for all Sentinel-1 Level-1 core user products acquired after 25/11/2015 10:40 UTC.

Products processed with this new baseline feature an enhanced radiometric quality as described in this technical note.

The new baseline doesn't impact the phase and is thus transparent for INSAR based applications.

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