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Regional SLAext - extended Sea Level Anomalies

North East Atlantic & Gulf of Mexico

Types of dataset: Ssalto/Duacs multimission altimeter products
Contents: multimission along-track sea surface heights computed with respect to a seven-year mean
Use: regional studies; ocean variability (mesoscale circulation, seasonal variation...), including operational oceanography (real-time products).
Condition of access : All Ssalto/Duacs product users need an account on FTP, see <link fr donnees informations-sur-les-produits duacs access-ssaltoduacs-products index.html _blank>Access to Ssalto/Duacs data
Description: regional product resulting from specific processes, available in near-real time (i.e each day) and in delayed time. These products are delivered with high frequency, ocean tide and inverse barometer corrections. The first two corrections were applied in the SLA computation; the third correction is provided for users who want to use the "conventional" inverse barometer in place of the more precise high frequency correction.
Geographic coverage: 30°N-70°N, 45°W-20°E (North East Atlantic); 18°N-31°N, 80°W-101°W (Gulf of Mexico)
Format: NetCDF, NetCDF CF1.4 (for the along-track products)

Tools:

  • <link file:3335 download>User handbook (Ssalto/Duacs product handbook: Mersea regional products)
  • Data reading software

DT-SLAext

Each DT-SLAext file includes 7 days of data.

Copyright : 2005-ongoing CLS - Cnes

SatelliteAreaAuthenticated access service
FrequencyData periodFile weight
Cryosat-2North East AtlanticFTP 6 months Apr. 2012 - ongoing200 KB per file (zipped)
Gulf of Mexico6 months Apr. 2012 - ongoing25 KB per file (zipped)
Jason-2North East Atlantic6 months

Oct. 2008 - ongoing 

200 KB per file (zipped)
Gulf of Mexico6 months

Oct.2008 - ongoing

20 KB per file (zipped)
Jason-1North East Atlantic6 months

August 2002 - Jan. 2009

Apr. 2009 - ongoing 

200 KB per file (zipped)
Gulf of Mexico6 months

August 2002 - Jan. 2009

Apr. 2009 - ongoing 

20 KB per file (zipped)
EnvisatNorth East Atlantic6 months June 2003 - ongoing 1000 KB per file (zipped)
Gulf of Mexico6 months June 2003 - ongoing 20 KB per file (zipped)
ERS-1/2North East Atlantic6 monthsOctober 1992 - May 1995
May 1995 - July 2003
1000 KB per file (zipped)
Gulf of Mexico6 monthsOctober 1992 - May 1995
May 1995 - July 2003
20 KB per file (zipped)
T/PNorth East Atlantic6 months October 1992 - October 20051800 KB per file (zipped)
Gulf of Mexico6 months October 1992 - October 200520 KB per file (zipped)
GFONorth East Atlantic6 monthsJanuary 2000 - October 20081800 KB per file (zipped)
Gulf of Mexico6 months January 2000 - October 200820 KB per file (zipped)

NRT-SLAext

Description : the NRT data are delivered daily.
Data period : within a few months at most, from the latest update of the DT products to today.
Copyright : 2005-ongoing CLS-Cnes.

SatelliteAreaAuthenticated access service
FrequencyData periodFile weight
Cryosat-2North East Atlantic FTP 1 day January 2012- ongoing 30 KB per file (zipped)
Gulf of Mexico1 day  January 2009 - ongoing 4 KB per file (zipped)
Jason-2North East Atlantic1 day September 2005 - ongoing 60 KB per file (zipped)
Gulf of Mexico1 day September 2005 - ongoing 6 KB per file (zipped)
Jason-1North East Atlantic1 day September 2005 - ongoing 60 KB per file (zipped)
Gulf of Mexico1 day September 2005 - ongoing 6 KB per file (zipped)
EnvisatNorth East Atlantic1 day  September 2005 - ongoing 30 KB per file (zipped)
Gulf of Mexico1 day  September 2005 - ongoing 6 KB per file (zipped)
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