Biochar greatly enhances methane oxidation in urban green roof substrate

The experiment investigated the effects of biochar amendment (20 t ha⁻¹; ~5% v/v) on methane (CH₄), carbon dioxide (CO₂), and water vapor (H₂O) fluxes, as well as associated substrate properties. Data were collected using static chambers connected to a LGR (Los Gatos Research) cavity ring-down spectrometer, representing one of the first multi-year assessments of CH₄ fluxes from urban green roof systems.

Filename: sedum_flux_2020_2024:This dataset includes multi-year measurements of methane (CH₄), carbon dioxide (CO₂), and water vapor (H₂O) fluxes from Sedum green roof modules in Toronto, Canada, collected between 2020 and 2024. The experiment quantified seasonal greenhouse gas (GHG) dynamics under different substrate treatments, including biochar-amended and organic control plots. Fluxes were measured with static chambers connected to a Picarro G2508 cavity ring-down spectrometer, following standard GHG chamber protocols.