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Duacs

Altimetry data for sea level studies & applications

  • Home
  • History and Context
    • Mesoscale
    • Climate
    • Régional and L4P product
  • System
    • Acquisition and data selection
    • L2 Upstream data
    • Homogenization and cross-calibration
    • Along-track (L3) products generation
    • Merged gridded (L4) products generation
    • Final quality control
    • System version changes
      • DUACS NRT system impacting version changes
        • Apr 2022: DUACS 19.1.0
        • May 2022: DUACS 19.2.0
        • November 2022 – DUACS-NG 1.0.0
        • November 2023 – DUACS-NG 2.0.0
        • July 2024: DUACS-NG 3.0.0
        • November 2024: DUACS-NG v4.0.0
        • June 2025 : DUACS-NG v4.1.0
        • November 2025: DUACS-NG v4.2.0
      • DUACS MY system impacting version changes
        • January 2023: MY DT-2021 temporal extension
        • May 2024: MY DT-2021 interim temporal extension
        • Nov 2024: MY DUACS DT-2024 full reprocessing
        • Nov 2025: Demontrative L4 reprocessed series with new MIOST version
  • DUACS Products
    • Copernicus Marine Service products
    • Copernicus Climate Service products
    • Ocean Monitoring Indicators
    • Demonstration and pre-operational products
    • DUACS High Resolution products
  • Products Quality
    • Different sources of error
      • Along-track measurements – main sources of errors
      • Merged product- main sources of errors
    • Estimated Accuracy Numbers
    • Quality report of the NRT production
      • NRT production timeliness
      • Key Performance Indicators
      • L2 upstream products monitoring
        • Sentinel 6A – sea surface height differences at cross over
        • Sentinel 3A – sea surface height differences at cross over locations
        • Sentinel 3B – sea surface height differences at cross over
        • Cryosat 2 – sea surface height differences at cross over
        • SARAL-DP/AltiKa – sea surface height differences at cross over
        • Jason 3 – sea surface height differences at cross over
        • Hai yang 2B – sea surface height differences at cross over
        • Swot- Nadir (Swon) – sea surface height differences at cross over
      • L3 products monitoring
      • L4 products monitoring
    • Main events impacting quality of NRT DUACS production
    • Estimating the contribution of each altimeter mission in the Level-4 gridded product.
  • Studies & Applications
    • Elephant seals turn around eddies
    • Gulf Stream seen by altimetry
    • Ierapetra gyre from year to year
    • Ocean eddies and river plume extension seen from space
    • Twenty-five years of Pacific monitoring by altimetry
  • FAQ
    • What are the products specification?
      • How are defined the different heights used in altimetry?
      • What is the resolution of the L4 gridded products?
      • What about the mean reference period?
      • What is the ellipsoid reference?
      • Weekly vs daily products
    • Sea Level reprocessing – Which version of the product am I currently using ?
    • What are the differences between the Marine and Climate sea level Products?
    • What about the Global Mean Sea Level (MSL) Indicator?
    • How to use of the different variables available in L3 products ?
    • What is the standards used for the different corrections for DT and NRT production ?
  • References
HomeFAQWhat is the standards used for the different corrections for DT and NRT production ?

What is the standards used for the different corrections for DT and NRT production ?

Standards used in the current production :

  • NRT production : L3 1Hz and 5Hz processing.
  • MY/REP production : DT-2024 processing.

 

Past versions :

  • MY/REP production : DT-2021 processing.
  • MY/REP production : DT-2018 processing.
  • Home
  • History and Context
  • System
  • DUACS Products
  • Products Quality
  • Studies & Applications
  • FAQ
  • References