Biochar greatly enhances methane oxidation in urban green roof substrate

Filename: merged_sedum.csv: This dataset contains long-term field measurements of greenhouse gas (GHG) fluxes from extensive Sedum green roof modules located at the University of Toronto, collected between 2020 and 2024. 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.