Célia Sapart

TL;DR: The new North Greenland Eemian Ice Drilling (‘NEEM’) ice core is presented and shows only a modest ice-sheet response to the strong warming in the early Eemians, which was probably driven by the decreasing summer insolation.

TL;DR: It is shown that methane produced in Bothnian Sea sediments is oxidized in distinct zones of iron- and sulfate-dependent AOM, the first field evidence for iron- dependent AOM in brackish coastal surface sediments and Laboratory incubation studies of these sediments suggest that the in situ microbial community is capable of linking methane oxidation to iron oxide reduction.

TL;DR: In this paper, the authors report repeated measurements of methanotrophic activity and community size at methane seeps west of Svalbard, and relate them to physical watermass properties and modelled ocean currents.

TL;DR: It is concluded that anthropogenic eutrophication and rapid sediment accumulation likely increase the release of CH4 from coastal sediments by providing abundant substrate.