PASS-SWIO Portagauge data

• The PASS_SWIO portagauge was installed at Toamasina on 16th June 2023. Radar gauge, GNSS and GNSS-IR data are available up to 29/04/24.
• Radar Gauge data - Quality controlled and pre-processed using the NOC TASK software:
• Primary Results file, containing tidal harmonics and quality control statistics: HA_053_000001_007603_GS_02_PR.txt
• Time Series file, containing hourly sea level measurements, tidal predictions and residuals: HA_053_000001_007603_GS_02_TS.t2k.txt
• Daily Mean Sea Levels file: HA_053_000001_007603_GS_02_DM.txt
• Monthly Mean Sea Levels file: HA_053_000001_007603_GS_02_MM.txt
• Radar gauge data will also be made available through the Permanent Service for Mean Sea Level ( www.psmsl.org )
• GNSS data
• GNSS-IR daily mean sea levels.
• GNSS daily mean precise location data.

PASS-SWIO Satellite Altimeter data

• We have downloaded Jason-1, Jason-2, Jason-3, Sentinel-3A and Sentinel-3B satellite altimeter data from CMEMS and pre-processed these data into along-track time series so that we can use them for analysis and validation against tide gauge data
• These data are available as a zip file for download at this link

Historical Toamasina Tide Gauge data

• We have downloaded Tide Gauge data for the previously installed Toamasina Tide Gauge from PSMSL and pre-processed these data into a standardized format so that we can use them for validation against satellite altimeter data
• These data are available as a zip file for download at this link

Satellite Oceanographic Consultants Ltd 2023