Wind blowing over the ocean creates waves, which by increasing the level of turbulence, promote gas exchange at the air-water interface. In Pascal’s first PhD paper, we measured for the first time enhanced gas exchanges by wind-induced waves at the surface of a large lake. We adapted an ocean-based model to account for surface waves on gas exchange in lakes. We finally show that intense wind events with surface waves contribute disproportionately to the annual CO2 gas flux in a large lake.
First PhD paper out from Lexplore and a nice UNIL-EAWAG-EPFL collaboration.
Perolo, P., Fernández Castro, B., Escoffier, N., Lambert, T., Bouffard, D., and Perga, M.-E.: Accounting for surface waves improves gas flux estimation at high wind speed in a large lake, Earth Syst. Dynam. https://doi.org/10.5194/esd-2021-30, in press, 2021.