Measurements of δ¹³C in CH₄ and using particle dispersion modeling to characterize sources of Arctic methane within an air mass.

ABSTRACT: A stratified air mass enriched in methane (CH₄) was sampled at ~600 m to ~2000 m altitude, between the north coast of Norway and Svalbard as part of the Methane in the Arctic: Measurements and Modelling campaign on board the UK's BAe-146-301 Atmospheric Research Aircraft. The approach used here, which combines interpretation of multiple tracers with transport modeling, enables better understanding of the emission sources that contribute to the background mixing ratios of CH₄ in the Arctic. Importantly, it allows constraints to be placed on the location and isotopic bulk signature of the emission source(s). Measurements of δ¹³C in CH₄ in whole air samples taken while traversing the air mass identified that the source(s) had a strongly depleted bul

SUBMITTER: France JL 

PROVIDER: S-EPMC6686218 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature