Document - Proceedings

2nd-International-GOCE-User-Workshop.pdf

This document describes the proceedings of the 2nd International GOCE User workshop held at the ESA-ESRIN Site, Frascati, Italy, 8-10 March 2004.

Document - Proceedings

4th-International-GOCE-User-Workshop.pdf

Proceedings of the 4th International GOCE User Workshop held on 31 March - 1 April 2011 at the Technische Universitat Munich, Germany

Document - General Reference

A-Jewel-in-ESAs-Crown-GOCE-and-its-Gravity-Measurement-Systems.pdf

This article is extracted from ESA Bulletin Nr. 133

Document - Proceedings

Abstracts-of-2nd-International-GOCE-User-Workshop.pdf

This volume collects the abstracts of the papers presented at the GOCE User Workshop, held on 8-10 March 2004 at ESA ESRIN, Frascati Italy.

Document - Software Verification Plan/Report

An-assessment-of-ERS-SAR-Low-Resolution-Imagery.pdf

The objective of this technical note is to describe and to analyse the various concepts associated with the ERS SAR low resolution imagery. This study is done in order to evaluate a range of products, to consider the trade-offs involved in product specification and to propose some recommendations fro low resolution imagery of quality suitable for a broad range of potential applications.

Document - Software Verification Plan/Report

An-investigation-of-the-error-characteristics-of-the-GOCE-geoid-models.pdf

This report presents an initial investigation into the error characteristics of the GOCE gravity field models as they are realised in the calculated geoid anomalies.

Document - General Reference

An-oceanographers-guide-to-GOCE-and-the-geoid.pdf

This article was published in Ocean Science Discussions. It gives a review of the geodetic concepts necessary for oceanographers to make use of satellite gravity data to define the geoid, and to interpret the resulting product.

Data - Announcement of Opportunity (Restrained)

Announcement of Opportunity for S3VT (Sentinel-3 Validation Team)

In the framework of a Copernicus collaborative agreement ESA and EUMETSAT invite interested groups and individuals to support the Sentinel-3 Validation Team (S3VT).

Activity - Projects

Auroral Electrojet and auroral Boundaries estimated from Swarm observations

In the Swarm-AEBS project, a set of new Swarm data products that characterise the auroral electrojets and auroral oval boundaries will be derived from Swarm magnetic field measurements.

News - Operational News

Change of access to FTP-S for ERS and Envisat atmospheric and low-rate data

As of 13 December 2023, access to a series of ERS and Envisat atmospheric and low rate data collections changed from simple FTP to FTP-S.

Activity - Projects

Characterization of IoNospheric TurbulENce level by Swarm constellation

The INTENS project aims to investigate the turbulent nature of the geomagnetic field and plasma parameters in the ionosphere as recorded by the Swarm during 1 April 2014 to 31 March 2018.

Mission - Copernicus Sentinels

Copernicus Sentinel-3

Copernicus Sentinel-3 is an European Earth Observation satellite mission developed to support Copernicus ocean, land, atmospheric, emergency, security and cryospheric applications.

Activity - Projects

Dragon 2 Cooperation Programme

The Dragon 2 Programme focussed on the exploitation of ESA, ESA's Third Party Missions and Chinese Earth observation data for science and applications development in land, ocean and atmospheric applications.

Document - General Reference

Earth-Explorers.pdf

This flyer gives a quick overview of the 6 Earth Explorers missions.

Document - Product Specifications

Envisat products specifications - Volume 9 - DORIS products specifications

Data - Fast Registration with immediate access (Open)

ERS PRARE Precise Orbit Product (ERS.ORB.POD/ERS.ORB/PRC)

The precise orbit results from a data reduction process in which all available tracking data (Single-Lens Reflex, radar altimeter crossovers, PRARE range and Doppler data) and most accurate correction, transformation and dynamical models are taken into account and in which high level numerical procedures are applied. These orbits are "optimal" achievable representations of the real orbital motion under the circumstances of tracking situation and the "state of the art" model situation. The precise orbit product for the ERS satellites are the satellite ephemeris (position and velocity vector) including time tag, given in a well-defined reference frame, together with the nominal satellite attitude information and a radial orbit correction. Several orbit solutions are currently distributed: A new set of ORB POD (Precise Orbit Determination - REAPER v2) computed with the most updated model standards for the complete ERS-1 and ERS-2 mission. A previous set of ORB POD (REAPER v1) data already available on the ESA dissemination site since 2014, covering the ERS-1 full mission and the ERS-2 mission up to July 2003. ORB PRC which is the original Precise Orbit dataset computed during the ERS mission operations for ERS-1 and ERS-2. In the new POD dataset (REAPER v2) for the ERS-1 and ERS-2 missions, two different orbit solutions are provided together with the combined solution to be used for processing of the radar altimeter measurements and the determination of geodetic/geophysical products: those computed by DEOS (Delft Institute of Earth Observation and Space Systems), and those generated by ESOC (European Space Operations Centre) using different software (GEODYN and NAPEOS respectively). Careful evaluation of the various solutions of REAPER v2 has shown that the DEOS solution for both ERS-1 and ERS-2 has the best performance and is recommended to be used as reference. See the ERS Orbit Validation Report. For the previous version of the POD data set (REAPER v1), with ERS-2 mission data only up to 2003, three different orbit solutions together with the combined solution are available. These precise orbits for ERS-1 and ERS-2 have been computed at DEOS, ESOC, and GFZ (Deutschen GeoForschungsZentrums) using different software and different altimeter databases. Combined solutions have been created using three individual solutions for each satellite. All orbits were derived using consistent models in the same LPOD2005 terrestrial reference frame. These new orbit solutions show notable improvement with respect to DGME04 orbits (Scharroo and Visser, 1998). Thus, RMS crossover differences of new orbits improved by 4-9 mm. Careful evaluation of the various solutions has shown that the combined solution for both ERS-1 and ERS-2 has the best performance. All POD orbit files (REAPER v1/v2) are available in SP3c format.

Document - Product Handbook

ERS-Altimeter-and-Orbit-Global-Products-Manual.pdf

This manual covers ERS Altimeter and Orbit products.

Document - Proceedings

ERS-Envisat-symposium-proceedings.pdf

This document contains the proceedings of the ERS-Envisat Symposium, which took place in 2000.

Document - Product Document

ERS_PRARE_Products_availability.pdf

This file cover the products availability of PRARE

Document - General Reference

ESAs-Gravity-Mission-GOCE.pdf

This brochure gives an introduction to the Gravity Field and Steady-State Ocean Circulation Mission GOCE, an Earth Explorer Core mission due for launch in 2006. GOCE is intended to provide the unique data set required to formulate global and regional models of the Earth's gravity field and the geoid (its referenceequipotential surface) to high spatial resolution and accuracy.