Products Monthly mean and Climatology Maps of Sea Level Anomalies - vDT2021 - Global
Please note that version vDT2024 is distributed by Marine Copernicus Service https://marine.copernicus.eu/fr
Types of dataset: Ssalto/Duacs multimission altimeter products. From January 1993 to the last extension of the Delayed-time products, the long delayed-time dataset allows to compute statistical means of seven variales over different periods of time. Data are created from daily Ssalto/Duacs and CMEMS products. (see product sheet for further information).
DOI: 10.24400/527896/AVISO-2026.002 - more metadata
Contents: multimission gridded sea surface heights computed with respect to a twenty-year mean profile [1993-2012], and including the seasonal variability (no annual cycle is removed).
The set of variables are the following :
- EKE (Eddy Kinetic Energy)
- MSLA-H (Sea Level Anomaly H, sea surface height above sea level)
- MSLA-U (Sea Level Anomaly U, surface geostrophic eastward sea water velocity assuming sea level for geoid)
- MSLA-V (Sea Level Anomaly V, surface geostrophic northward sea water velocity assuming sea level for geoid)
- MADT-H (Absolute Dynamics Topography H : sea surface height above geoid)
- MADT-U (Absolute Dynamics Topography U, surface geostrophic eastward sea water velocity)
- MADT-V (Absolute Dynamics Topography V, surface geostrophic northward sea water velocity)
Three kinds of means are proposed:
- Monthly averaged corresponds to the weekly maps of delayed-time data averaging month by month from January 1993. We obtain one file and one map per month since January 1993.
- Seasonal mean corresponds to the daily maps of delayed-time data averaging season by season. We obtain one file and one map per season (JFM - AMJ - JAS- OND).
- Climatological monthly are calculated by averaging the daily maps of delayed-time data over a same month from January 1993 up to the last extension of the Delayed-time products. We obtain one data file and one map for each month.
Use: long-term variability, seasonal and climate studies.
Condition of access: please refer to the Licence Agreement
Data access service: these products are delivered through the authenticated FTP and the Opendap
Description: gridded product in delayed time
Geographic coverage: global (1/4°x1/4°, cartesian grid),
Format: NetCDF-CF. A quicklook (.png) is also provided for each map.
Tools:
- User handbook: Climatologies handbook
Monthly mean Maps
Description: Averaged DT data corresponds to the daily maps of delayed-time values averaging month by month from January 1993.
Copyright : 1993-ongoing CLS
| Satellite | Distribution media | Frequency | Data period | File weight |
|---|---|---|---|---|
| Merged | On demand, please contact aviso@altimetry.fr | 3-4 months | January 1993 - August 2023 | 1.2 MB per file (zipped) |
Seasonal mean Maps
Description: Averaged DT data corresponds to the daily delayed-time maps averaged season by season: January-February-March / April-May-June / July-August-September / October-November-December from 1993.
Copyright : 1993-ongoing CLS
| Satellite | Distribution media | Frequency | Data period | File weight |
|---|---|---|---|---|
| Merged | On demand, please contact aviso@altimetry.fr | 6 months | January 1993 - August 2023 | 1 MB per file (zipped) |
Climatological Maps
Description: Climatological Maps are calculated from the maps of delayed-time data over a same month from January 1993 to the last extension of the Delayed-time products. We obtain one data file and one map for each month.
Copyright : 2009-ongoing CLS
| Satellite | Distribution media | Frequency | Data period | File weight |
|---|---|---|---|---|
| Merged | On demand, please contact aviso@altimetry.fr | 6 months | January 1993 - August 2023 | 1 MB per file (zipped) |
