Data
ClimEx analyses together data from different sources, as long-term tide gauges, century-old seismic stations or satellite altimeters. In addition, nearshore field campaigns deploying wave pressure sensors are conducted.
Tide gauge analysis
Over the two first years of the project (2022-2023), long tide gauges were analyzed. Results are the following.
- We found a shift of the storm surge season in Europe. Extreme surge events occurred about 4 days/decade later in northern Europe, and 5 days/decade earlier in southern Europe, in the winter 2000 than in the 1950s (Roustan et al., 2022).
- We characterized the dynamics of typical storm surge events. Storm surge events display a slow-time and a fast-time component, lasting about 16 and 1.7 days respectively (Pineau-Guillou et al., 2023).
- We now extended this analysis to the whole North Atlantic, and investigate how storm surge events change over time (ongoing work).
- We also analyzed long-term tide gauges, to characterize changes in storm surges in a warming climate (ongoing work).
Seismic data analysis
In 2024, we started to analyse seismic noise, in order to investigate if storm surge events can be captured by these observations.
Satellite data analysis
During 2024, we will start to analyse satellite altimeter data, to estimate storm surges along the tracks in the North Atlantic. With now more than 5 altimeter missions, altimeters can capture a significant number of storm surge events.