Ecosystem-scale methane emissions from peatlands of the Hudson Bay Lowlands

Files include: Daily_CH4flux_ancillary_data_PB2_2017-2019.csv, Daily_CH4flux_ancillary_data_PB1_2016-2017.csv, Daily_CH4flux_ancillary_data_ARB_2011-2019.csv, Daily_CH4flux_ancillary_data_ARF_2011-2019.csv Daily average methane (CH4) fluxes and corresponding daily average values of environmental factors (calculated from gapfilled datasets) used to characterize drivers of methane fluxes at four peatland sites in the Hudson Bay Lowlands: 1) a treed patterned fen near Attawapiskat River (Ameriflux code: CA-ARF and abbreviation, ARF, 52⁰42'02'' N, 83⁰57'18'' W); 2) a bog near Attawapiskat River (Ameriflux code: CA-ARB and abbreviation, ARB, 52⁰41'42'' N, 83⁰56'42'' W); 3) a peat plateau with permafrost table at about 1 m depth in Polar Bear Provincial Park (Ameriflux code: CA-PB1 and abbreviation, PB1, 54⁰56'30'' N, 83⁰27'28'' W); 4) a thawing peatland in Polar Bear Provincial Park (Ameriflux code: CA-PB2 and abbreviation, PB1, 54⁰56'20'' N, 83⁰28'25'' W). Methane fluxes were measured with the eddy covariance technique. The second column (CH4 flux) contains all daily average CH4 fluxes calculated from gapfilled data, while the third column ("CH4 flux with >= 8") contains daily average CH4 fluxes calculated for days where at least 8 non-modelled 30-minute averages were available in the day. Data_files Rev1.zip: Datasets include ancillary variables and fluxes pre- and post-cleaning and gap-filled at the 30 min time step, daily, monthly and annual. Total season CH4flux and GPP_HBL_tower_sites_2011-2019.csv Total season (April 1 - Nov 30) gap-filled methane fluxes and gross primary productivity (GPP) derived for the four peatland sites described above. GPP was derived from eddy covariance flux measurements of net ecosystem CO2 exchange and gap-filled as described by Beaver, J., Humphreys, E. R., & King, D. (2024). Random forest development and modeling of gross primary productivity in the Hudson Bay lowlands. Canadian Journal of Remote Sensing/Journal Canadien de Teledetection, 50(1). https://doi.org/10.1080/07038992.2024.2355937 Matlab Scripts Rev1.zip: Matlab scripts which process the pre-cleaned data through QA/QC protocols, gap-filling, and analysis, and figures.