Operational News

11.05.2025 [CFOSAT] Safe hold mode since May 10, 2025

Dear user,Please note that CFOSAT has been in safe hold mode since May 10, 2025. We are working with our partners to retrieve the mission.Best regards,Aviso User Services[more]

06.05.2025 [CFOSAT] AWWAIS v7.1 main evolutions

Dear user,Please note that for version 7.1 in production from 2025/02/18 to 2025/04/23, the SNR threshold has been modified from 1.1 to 0.7 for the combined beam only and not for the 10° beam. Since 2025/04/23 7:18, and following the correction of the speckle model described in the previous release note [CFOSAT_AWWAIS_V7.1_ReleaseNote.pdf (altimetry.fr), the SNR ratio is now set to 0.7 for 10° beam and combined beam.To remember, this was chosen so as to find a compromise between improving the correlation coefficient between the wave elevation spectra from SWIM and from the MFWAM model, and not degrading the spectra in long and low swells regions. This change in the SNR threshold value does not change significantly the number of cases affected by the parasitic peak correction, which is about 30%.[more]

14.04.2025 [CFOSAT] Wrong input auxiliary files between 03/31/2025 - 04/07/2025

Dear user,Please note that due to a software anomaly, L2ANAD products were generated with the auxiliary file CFO_TEST_AUX_WIND_F_20161219T000000_20991231T235959.bin instead of CFO_OPER_AUX_WIND__20181022T000002_20991231T235959.bin over the 03/31/2025 - 04/07/2025 period.The impact on ANAD products is limited to changes in WIND_SPEED values (enhancement).Everything will be brought in line with the remove of TEST_AUX_WIND file in the database. Mission-wide consistency will be achieved during the next reprocessing phase.[more]

06.01.2025 [JASON-3] Evolution of (O/I)GDRs to the G-01 standard

The evolution of standards to version G is foreseen between 6 and 20 januray 2025.[more]

20.09.2024 [CFOSAT] unsuccessful attempt to deploy AWWAIS 7.0

Please note that due to an unsuccessful attempt to deploy AWWAIS 7.0, CFO_OP06_SWI_L2ANAD products were generated with the auxiliary file CFO_TESTAUX_WIND__F_20161219T000000_20991231T235959.bin

instead of

CFO_OPERAUX_WIND__F_20181022T000001_20991231T235959.bin      over the 08/30 - 09/16/2024 period.

ANAD products were also renamed to CFO_OPER_SWI_L2ANAD. The impact on ANAD products is limited to changes in WIND_SPEED values (enhancement).

Everything will be brought in line with the deployment of AWWAIS version 7.0. Mission-wide consistency will be achieved during the next reprocessing phase.

[more]

18.07.2024 Recovery of the AVISO+ dissemination services

Services Impacted:  FTP, SFTP, WMS, TDS, Data extraction service, MY AVISO+

Begin Date: 2024/07/18 12h00 (UTC)

End Date: 2024/07/18 1h00 pm (UTC)

Comments: disk space saturation

[more]

18.07.2024 Temporary unavailability of the AVISO+ dissemination services

Services Impacted:  FTP, SFTP, WMS, TDS, Data extraction service, MY AVISO+

Begin Date: 2024/07/18 12h00 (UTC)

Comments: Investigations are ongoing to resolve the issue

âââââââWe apologize for the inconvenience. Our support team is available for any further information (aviso@altimetry.fr)  

[more]

10.04.2024 [SWOT] Version C KaRIn Science Data Products Release

A brief update on the ongoing reprocessing of SWOT Version C KaRIn science data products:

All KaRIn LR (oceanography) data products from the calibration phase, except for cycle 565 pass 019, have been reprocessed and are now available.

Reprocessing of KaRIn LR products for the science phase continues, and products will continue to be distributed as they become available.

Reprocessed LR science phase data will span cycles 1-9, only.

Forward processed data from cycle 10 onward should be used.

Please note that the reprocessed calibration phase spans March 30 â July 10, 2023, and includes data from cycle 475 pass 26 to cycle 578 pass 004.

[more]

27.03.2024 [SWOT] Reduced number of hydrology measurements (HR Mask) - South Africa internet failure

On March 15th, the CNES terrestrial link to South Africa suffered a major internet failure. Since that time it has unfortunately been impossible to recover any telemetry downloaded to our station in Hartebeesthoek. Given the large amount of telemetry generated by the SWOT satellite, the number of passes available in the CNES network to download all the data is insufficient. In order to avoid any loss of measurements, the satellite programming was updated on March 19 to reduce the number of land hydrology measurements (HR Mask) to 45% of the maximum possible data. On March 21, the programming has been re-tuned to increase the available hydrology data to approximately 76%.

Map showing the updated mask reduced to 76%.

This event is temporary and we will return to nominal measurements as soon as the terrestrial link with Hartebeesthoek is re-established.

The SWOT Project

[more]

03.01.2024 [CFOSAT] SWIM specific acquisition sequence from 2024 January 12th to February 7th

A specific acquisition sequence of the SWIM instrument will be effective from 2024 January the 12th to February the 7th, which corresponds to CFOSAT orbital cycles 147 and 148.

During this period, the macrocycle, i.e. the sequence of beams illuminated, will be 0°, 2°, 10°, 10°, 10°, instead of the usual 0°, 2°, 4°, 6°, 8°, 10° sequence.

This specific programming of the instrument aims at getting data to analyze the impact and possibilities linked to the repeated sampling of the 10° beam on the Wave spectra and derived parameters performance.

Products will be delivered as usual during the period.

After the 7th of February, the instrument will come back to usual programming (0°, 2°, 4°, 6°, 8°, 10°).

[more]