MethDB: A Global database of methane concentrations and atmospheric fluxes for streams and rivers:
https://doi.org/10.6073/pasta/21f5bd6642e9689baf90262f3c85ac4a
Stanley, E., L. Loken, J. Crawford, N. Casson, S. Oliver, C. Gries, and S. Christel. 2015. A Global database of methane concentrations and atmospheric fluxes for streams and rivers ver 5375842. Environmental Data Initiative. https://doi.org/10.6073/pasta/21f5bd6642e9689baf90262f3c85ac4a.
Maps of Mean Methane Volume Mixing Ratio in the Atmosphere Between the Surface and 4km Altitude over the Arctic:
Surface Ocean Processes in the Anthropocene (SOPRAN)
European Cooperation in Science and Technology (COST)
Surface Ocean Lower Atmosphere Study (SOLAS)
Helmholtz-Zentrum für Ozeanforschung Kiel (GEOMAR)