Sea Level Anomalies (SLA)
Sea Level Anomalies based on Multi-Mission Satellite AltimetrySea Level Anomalies (SLA) are provided along-track for all available satellite altimeter missions. They describe the difference between the actual sea surface height (SSH) and a mean sea surface height (MSSH). All measurements are already corrected by the most actual geophysical corrections (e.g. tides and atmospheric delays). Moreover, as the data of all missions have been carefully harmonized and cross-calibrated in advance (following the approach of Bosch et al., 2014), it should be possible to merge and combine SLA of any mission in order to improve the spatial and temporal resolution.
Available Dataset(s)
Available version(s) of the product "Sea Level Anomalies (SLA)" in OpenADB.
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Sea Level Anomalies (SLA) (Recommended)
Version 40 (Mean sea surface: DTU15)
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Sea Level Anomalies (SLA)
Version 33 (Mean sea surface: CLS11)
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The SLA profiles are distributed here in the hope that they will be useful, but DGFI-TUM provides these data "as is" without warranty, expressed or implied, as to the use or appropriateness of the SLA, and there are no warranties of merchantability or fitness of these data for a particular purpose or use.
Data Format
| Parameter | Description |
|---|---|
| glon | Longitude of Satellite Footprint |
| glat | Latitude of Satellite Footprint |
| jday | Julian Day 2000 |
| sla | Sea Level Anomalies |
| gflags | Geophysical Corrections Quality Flags |
| oflags | Orbit Status and Quality Flags |
| iflags | Instrument Status and Quality Flags |
The data will be provided in NetCDF. More details on the data are available here.
How to cite this dataset
When using this data please cite: "The SLA were produced by DGFI-TUM based on multi-mission altimeter data and distributed via OpenADB (Schwatke et al., 2023)."
Please also give credit to the respective institution(s) in charge of mission operation and maintenance (see bottom of this page).
All products are computed based on altimetry missions operated by NASA/CNES (TOPEX, Jason-1), ESA (ERS-1/2, Envisat, Cryosat-2), USNavy (Geosat,GFO), CNES/NASA/EUMETSAT/NOAA (Jason-2, Jason-3), ISRO/CNES (SARAL), EUMETSAT (Sentinel-3A/-3B), and NASA/EUMETSAT (Sentinel-6A). The original datasets are disseminated by AVISO, ESA, EUMETSAT, NOAA, and PO.DAAC.