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L2P Altimeter release notes

The following page summarize the latest releases and minor changes/corrections for the Altimeter GlobWave products.

 GDR products

2012-Nov-16 GeoSat GDR minor update

GeoSAT GDR data have been completely reprocessed in order to fix a bug in land flag calculation for this dataset. The archive available on FTP is now up to date.

2012-Feb-10 Major update

ENVISAT L2 have been reprocessed by ESA to version 2.1 : accordingly we have reprocessed the complete new GDR data collection to GlobWave L2P level. The new GlobWave Envisat L2P also corrects an issue with the rain flag handling and calibration which led to an abnormally low number of "good" quality values since January 2010 : this new dataset now replaces the former GDR collection available on GlobWave portal and spans from 2002 to the end of 2011.

We have also extended the L2P GDR data collection for Jason-1 and Jason-2 by processing the latest available source data (2011).

2011-Jul-21 Minor update

Some ancillary fields were not filled in the L2P GDR products for the following altimeters :

  • TOPEX : missing bathymetry for years 1992 to 2005, and model wind for some months in years 2003 to 2005
  • JASON-2 : missing distance_to_coast for year 2010
  • ERS-2 : missing distance_to_coast for year 1998
  • ENVISAT : missing distance_to_coast (and bathymetry on some files) for years 2005 and 2006

The corresponding data have been reprocessed and the online ftp archive updated.