SARAL Near-Real-Time Value-added Operational Geophysical Data Record Sea Surface Height Anomaly
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| DOI | 10.5067/AKASA-XOGD1 |
| Short Name | ALTIKA_SARAL_L2_OST_XOGDR |
| Description | These data are near-real-time (NRT) (within 7-9 hours of measurement) sea surface height anomalies (SSHA) from the AltiKa altimeter onboard the Satellite with ARgos and ALtiKa (SARAL). SARAL is a French(CNES)/Indian(SARAL) collaborative mission to measure sea surface height using the Ka-band AltiKa altimeter and was launched February 25, 2013. The major difference between these data and the Operational Geophysical Data Record (OGDR) data produced by the project is that the orbit from SARAL has been adjusted using SSHA differences with those from the OSTM/Jason-2 GPS-OGDR-SSHA product at inter-satellite crossover locations. This produces a more accurate NRT orbit altitude for SARAL with accuracy of 1.5 cm (RMS), taking advantage of the 1 cm (radial RMS) accuracy of the GPS-based orbit used for the OSTM/Jason-2 GPS-OGDR-SSHA product. This dataset also contains all data from the project (reduced) OGDR, and improved altimeter wind speeds and sea state bias correction. More information on the SARAL mission can be found at: http://www.aviso.oceanobs.com/en/missions/current-missions/saral.html |
| Version | 1 |
| Dataset Type | PREVIEW |
| Measurement | Oceans > Ocean Waves > Significant Wave Height > None Oceans > Sea Surface Topography > Sea Surface Height > None |
| Processing Level | 2 |
| Coverage | Region: Global Northernmost Latitude: 82 degrees Southernmost Latitude: -82 degrees Westernmost Longitude: 0 degrees Easternmost Longitude: 360 degrees Time Span: 2013-Nov-18 to Present |
| Resolution | Spatial Resolution: 11 km (Along) x 5 km (Across) |
| Projection | Type: Swath Detail: Ellipsoid: |
| Latency | 9 hours |
| Swath Width | 11 km |
| Sample Frequency | 1 |
| Temporal Repeat (Nominal) | 35 Day |
| Temporal Repeat (Min) | - |
| Temporal Repeat (Max) | - |
| Platform/Sensor | SARAL / Platform Name: Satellite with Argos and AltiKa (SARAL) Orbit Period: 100.59 minutes Inclination Angle: 98.55 degrees Ascending Node: 1970-Jan-01 00:00:00 ALTIKA Altimeter SENSOR Name: AltiKa (ALTIKA Altimeter) Swath Width: 11 km Description: Ka band altimeter onboard SARAL to measure sea surface height |
| Project | Satellite with ARgos and ALtiKa (SARAL) |
| Data Provider | Creator: Shailen Desai Release Place: JPL Release Date: 2013-Dec-03 Resource: - |
| Persistent ID | PODAAC-AKASA-XOGD1 |
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
| PO.DAAC DRIVE | https://podaac-tools.jpl.nasa.gov/drive/files/allData/saral/preview/L2/XOGDR-SSHA |
| OPENDAP | https://podaac-opendap.jpl.nasa.gov/opendap/allData/saral/preview/L2/XOGDR-SSHA/ |
| Format (Compression) | NETCDF (NONE) |
| Web Service | https://podaac.jpl.nasa.gov/ws/search/granule/?datasetId=PODAAC-AKASA-XOGD1 (Search Granule) |
| Read Software | |
| Generic NetCDF readers | https://podaac-tools.jpl.nasa.gov/drive/files/allData/saral/preview/L2/XOGDR-SSHA/sw read software |
| User's Guide | |
| XOGDR-SSHA user guide | https://podaac-tools.jpl.nasa.gov/drive/files/allData/saral/preview/L2/XOGDR-SSHA/docs user's guide |
| Citation | Shailen Desai. 2013. SARAL Near-Real-Time Value-added Operational Geophysical Data Record Sea Surface Height Anomaly. Ver. 1. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/AKASA-XOGD1.
For more information see Data Citations and Acknowledgments.
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