Data for "Coarse land cover datasets bias Arctic-Boreal wetland methane budgets"

This repository contains datasets supporting the article "Coarse land cover datasets bias Arctic-Boreal wetland methane budgets". Data are organized into three main components:

Contents

• Readme file

CSV file containing header information, description, and units

• Chamber Flux Data

CSV file containing CH₄ fluxes across multiple spatial resolutions for each region and each land cover class. Values are derived from upscaled chamber-based measurements combined with harmonized land cover classifications.

• Landscape Statistics

CSV file containing landscape metrics and fragmentation indices for each study region. Includes measures of patch size, edge density, and heterogeneity relevant to wetland distribution and classification.

• Spatial Data

GeoTIFF rasters of land cover maps for each study region at very high spatial resolution (≤2.5 m). Each raster contains five to seven land cover classes

Usage Notes

Flux values can be directly linked with the corresponding land cover statistics and raster maps. Landscape indices are intended to contextualize spatial fragmentation and its effect on CH₄ emission scaling. land cover maps are georeferenced.

Related Publications:

• Andresen, C., Tweedie, C. E., Villarreal, S., Cody, R. & Vargas Zesati, S. Detailed wetlands map for the Barrow Region, northern Alaska, for 2010–2013: Barrow Area Information Database (BAID). (2016).
• Tweedie, C. E., Villarreal, S., Andresen, C. & Cody, R. Detailed wetlands map for the Barrow Region, northern Alaska, for 2010 to 2013: Barrow Area Information Database (BAID). (2016).
• Davidson, S. J. et al. Vegetation Type Dominates the Spatial Variability in CH4 Emissions Across Multiple Arctic Tundra Landscapes. Ecosystems 19, 1116–1132 (2016).
• Treat, C. C. et al. Tundra landscape heterogeneity, not interannual variability, controls the decadal regional carbon balance in the Western Russian Arctic. Glob. Change Biol. 24, 5188–5204 (2018).
• Räsänen, A., Manninen, T., Korkiakoski, M., Lohila, A. & Virtanen, T. Predicting catchment-scale methane fluxes with multi-source remote sensing. Landsc. Ecol. 36, 1177–1195 (2021).
• Juutinen, S. et al. Variation in CO2 and CH4 fluxes among land cover types in heterogeneous Arctic tundra in northeastern Siberia. Biogeosciences 19, 3151–3167 (2022).
• Virkkala, A.-M. et al. High-resolution spatial patterns and drivers of terrestrial ecosystem carbon dioxide, methane, and nitrous oxide fluxes in the tundra. Biogeosciences 21, 335–355 (2024).
• Chasmer, L., Hopkinson, C., Veness, T., Quinton, W. & Baltzer, J. A decision-tree classification for low-lying complex land cover types within the zone of discontinuous permafrost. Remote Sens. Environ. 143, 73–84 (2014).
• Schulze, C. et al. Nitrous Oxide Fluxes in Permafrost Peatlands Remain Negligible After Wildfire and Thermokarst Disturbance. J. Geophys. Res. Biogeosciences 128, e2022JG007322 (2023).
• Voigt, C. et al. Arctic soil methane sink increases with drier conditions and higher ecosystem respiration. Nat. Clim. Change 13, 1095–1104 (2023)