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Envisat RA-2 Geophysical Data Record - GDR [RA2_GDR__2P]

Data

29 Oct 2019

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blue arrow DESCRIPTION

This is a RA-2 Geophysical Data Record (GDR) Full Mission Reprocessing (FMR) v3 product containing radar range and orbital altitude, wind speed, wave height, water vapour from the MWR and geophysical corrections. This FMR follows the first Envisat Altimetry reprocessing Version (V2.1) completed in 2012. The GDR and S-GDR data products were reprocessed for all cycles from 6 to 113 (May 2002 to April 2012) into a homogeneous standard in NetCDF format (close to Sentinel-3).

For many aspects, the V3.0 reprocessed data are better than the previous dataset:

- In terms of available and valid data, the coverage is better, notably thanks to a better availability of MWR data at the beginning of the mission

- In terms of performance at cross-overs, the quality is improved: the annual signal and average of Mean SSH is decreased, as well as the standard deviation

- The new MWR characteristics were shown to improve largely the global quality of data. As well as the new tide model, the new MSS and the new orbit standard

- The Global and regional Mean Sea Level trend is very weakly impacted though the effort was put, this time, on the mesoscale restitution, rather than long term drift, as during V2.1 reprocessing

Please consult the Envisat RA-2/MWR Product Quality Readme file pdf before using the data.

blue arrow DETAILS

blue arrow DATA SET SPECIFICATIONS

Digital Object Identifier (DOI): European Space Agency, 2018, RA-2 Geophysical Data Record. Version 3.0. https://doi.org/10.5270/EN1-ajb696a

Spatial coverage: 

90 N, -90 S, -180 W, 180 E

Temporal coverage:

2002-05-14 - 2012-04-08

Date of launch:
2002-03-01
Operators:
ESA
Mission status:
completed
Orbit height:
800 km
Orbit type:
Sun-synchronous
Swath width:
5 - 1150 km

blue arrow PROCESSING LEVEL

level 2,

blue arrow APPLICABLE TERMS & CONDITIONS

Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions

READ T&C

blue arrow RESOURCES

RA2-MWR Auxiliary Data
Auxiliary Data
RA-2 Product Handbook
User Manual
RA-2 Product Specifications
Product Specifications
ReadMe file
Product Specifications
Envisat Altimetry Error Budget
Technical Note
Further information related to RA2 Products and Quality
Other
RA-2 Software Tools
Tools
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