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Transforming space data into climate action
ESA’s Earth observation activities are playing a key role in the revitalised global drive to combat climate change.
The RA-2 On-Board Tracker and its Autonomous Adaptable Resolution
This technical note describes the complete functionality of the RA-2 on-board Tracker and how its Resolution Selection Logic (RSL) works. It gives a detailed analysis of the algorithm and its configuration parameters.
The Envisat Radar Altimeter System (RA-2)
This article was published in the ESA Bulletin Nr. 98 and givesdetails on RA-2 and on its role in the ENVISAT mission.
Showcasing Fundamental Data Records for Altimetry
ESA has developed a comprehensive suite of Earth system data records as part of the Fundamental Data Records for Altimetry (FDR4ALT) project.
Remaining-East-West-bias-explained.pdf
This presentation shows the results obtained from a scientific assessment on the use of GDR-D improved orbit standard and of the consequent improvement in the Sea Surface Height and Sea Level Anomaly Data of altimeter GDR data (A. Ollivier, OSTST 2011).
RA-2-S-Band-anomaly-detection-and-waveforms-reconstruction.pdf
This paper describes the algorithm developed for the L1b processor that allows to set a flag identifying the data affected by the S-Band anomaly and reconstruct normal echo waveforms.
RA-2-In-Flight-Instrument-Calibration-and-Level-1b-Verification-Plan.pdf
This document describes the plan for the RA-2 In-flight Instrument Calibration and Level lb Verification procedures.
Passive Calibration of the Backscattering Coefficient of the Envisat RA-2
Passive Calibration of Backscattering Coefficient of Envisat RA-2: final report
OPERATIONAL-CORRECTION-FOR-THE-RA2-SIDE-A-USO-ANOMALY.pdf
This paper presents the method implemented to correct the anomalous data as well as the assessment of the quality and performance of the corrected data through two different analyses.
Level-1B-and-Level-2-processing-upgrades.pdf
This document contains user information relative to the operational implementation of the RA2/MWR Level 1b IPF version up to v6.04 and Level 2 processor CMA v9.3 used to generate Altimetry Data Set 2.1.
Introducing Mirko Albani
In this short introduction, ESA's Heritage Missions Programme Manager describes what he likes most about ESA's long term archive of satellite mission data and his role in the programme.
Improving-the-long-term-stability-of-the-GDR-orbit-solutions.pdf
This presentation shows the results and the benefits of using new GDR-D orbit standards for ENVISAT mission. (L. Cerri et al., OSTST 2011).
Heritage Missions app for iOS
Download the Heritage Missions application to discover what the missions were about, how it worked and what the elements of the space and ground segment that make these missions unique.
Heritage Missions app for Android
Download the Heritage Missions application to discover what the missions were about, how it worked and what the elements of the space and ground segment that make these missions unique.
Global-Validation-of-ENVISAT-Wind-Wave-and-Water-Vapour-Products-from-RA-2-MWR-ASAR-and-MERIS.pdf
This report provides information on how products of some ENVISAT instruments (RA-2, ASAR, MWR, MERIS) have been monitored and validated against corresponding parameters from ECMWF (European Centre for Medium Range Weather Forecast) atmospheric and wavemodels., in-situ buoy and platform instruments and other satellites (ERS-2 and Jason).
Fundamental Data Records for Radiometry [MWR_FDR___]
This dataset is a Fundamental Data Record (FDR) resulting from the ESA FDR4ALT project. The Fundamental Data Record for Radiometry V1 products contain intercalibrated Top of the Atmosphere brightness temperatures at 23.8 and 36.5 GHz. The collection covers data for the ERS-1, ERS-2 and Envisat missions, and is built upon a new processing of Level 0 data, incorporating numerous improvements in terms of algorithms, flagging procedures, and corrections. Compared to existing datasets, the Radiometry FDR demonstrates notable improvements in several aspects: New solutions for instrumental effects (ERS Reflector loss, Skyhorn, and Sidelobe corrections) Native sampling rate of 7Hz with enhanced coverage The FDR4ALT products are available in NetCDF format. Free standard tools for reading NetCDF data can be used. Information for expert altimetry users is also available in a dedicated NetCDF group within the products. Please consult the FDR4ALT Product User Guide before using the data. The FDR4ALT datasets represent the new reference data for the ERS/Envisat altimetry missions, superseding any previous mission data. Users are strongly encouraged to make use of these datasets for optimal results.