Our group has recently published a few exciting papers characterizing methane emissions from reservoirs, at scales ranging from meters to the globe. Here are the papers:
- D’Ambrosio*, S.L., S.M. Henderson, J.R. Nielson, and J.A. Harrison, (2022) In situ flux estimates reveal large variations in methane flux across the bottom boundary layer of a eutrophic lake, Limnology and Oceanography. doi: 10.1002/lno.12193
- Soued, C., J.A. Harrison, S. Mercier-Blais, Y.T. Prairie (2022) Reservoir greenhouse gas emissions and their climate impact through time (1900-2060), Nature Geoscience. doi:10.1038/s41561-022-01004-2
- Delwiche, K.B., J.A. Harrison, J.D. Maasakkers, M.P. Sulprizo, D.J. Jacob, E.M. Sunderland, and J. Worden (2022) ResME – A global mechanistic model for methane emissions from hydroelectric reservoirs, Journal of Geophysical Research – Biogeosciences. doi:10.1029/2022JG006908
The first paper, led by former GCWB Lab PhD student Sofia D’Ambrosio, shows the first ever results of a non-invasive “flux gradient” method for characterizing benthic fluxes in lakes and reservoirs. It shows a surprisingly large amount of hourly variation in benthic methane fluxes, driven largely by an oscillating seiche-related current. The second paper, with UQAM-based colleagues, presents the first-ever long-term record of reservoir CH4 and CO2 emissions and compares those emissions with other GHG sources through time. The final paper, led by Kyle Delwiche, introduces a new, global model for predicting methane emissions from hydroelectric reservoirs.