Aurélie Panetier defended her PhD "Shipborne GNSS for offshore atmospheric water vapor monitoring" on Thursday 21 december 2023 at ENSTA Bretagne (Brest)
Jury
- Laurent Morel, ESGT - reviewer
- Olivier Bock, IPGP-IGN, Université Paris-Cité - reviewer
- Jean-Marc Le Caillec, IMT Atlantique - examiner
- Laurent Dusseau, CSUM, Université de Montpellier - examiner
- Marie-Noëlle Bouin, CNRM, Ifremer - examiner
- Ali Khenchaf, Lab-STICC/PIM, ENSTA Bretagne - supervisor
- Pierre Bosser, Lab-STICC/M3, ENSTA Bretagne - co-supervisor
Abstract
Global Navigation Satellite System (GNSS) has unfolded as a ground-based atmosphere monitoring tool. Some studies aiming to compensate for the lack of atmosphere sensing above the oceans began to apply this method to shipborne GNSS antennas. The undertaken work through this thesis put forward processing automation of long-lasting shipborne GNSS antenna datasets.
To this end, we first established a processing strategy suitable for shipborne GNSS datasets by testing several processing configurations on actual and simulated data. The estimates are analyzed to provide a best-suited processing configuration for water vapor retrieval at sea.
We applied the recommended optimal strategy to the long-lasting dataset processing of the campaigns from the French Oceanographic Fleet between 2015 and 2022. We compared the extracted precipitable water vapor to external datasets before assessing their potential use in climate studies. This automated processing strategy adapted to routine measurements could lead to a numerical weather prediction application.
Keywords
GNSS, precise point positioning, zenith tropospheric delay, precipitable water vapor, shipborne antenna.
