We examine an Arctic winter storm event, which led to ice break–up, the formation of open leads, and the subsequent freezing of these leads. The methane (CH4) concentration in under–ice surface water before and during the storm event was 8–12 nmol L−1, which resulted in a potential sea–to–air CH4 flux ranging from +0.2 to +2.1 mg CH4 m−2 d−1 in open leads. CH4 ventilation between seawater and atmosphere occurred when both open water fraction and wind speed increased. Over the nine days after the storm, sea ice grew 27 cm thick. Initially, CH4 concentrations in the sea ice brine were above the equilibrium with the atmosphere. As the ice grew thicker, most of the CH4 was lost from upper layers of sea ice into the atmosphere, implying continue...
peer reviewedWe report on methane (CH4) stable isotope (d13C and d2H) measurements from landfast sea...
Large quantities of methane are stored in hydrates and permafrost within shallow marine sediments in...
Methane sources and sinks in the Arctic are poorly quantified. In particular, methane emissions from...
We examine an Arctic winter storm event, which led to ice break–up, the formation of open leads, and...
Arctic amplificaton of global warming has led to increased summer sea ice retreat, which influencesg...
This PhD thesis highlights the role of the cycles of sea ice formation and melt on the methane (CH4)...
peer reviewedWe report on methane (CH4) dynamics in landfast sea ice, brine and under-ice seawater a...
Latent heat polynyas are regions generating strong ice formation, convection and extensive water mas...
Global warming has led to a sharp decrease in Arctic summer sea ice extent and a dramatic ice mass l...
Methane is a potent greenhouse gas whose atmospheric concentration has increased over th...
Methane is a powerful greenhouse gas. In the ocean, it originates from gas bearing sediments, can be...
The maximum concentration of atmospheric methane (CH4) occurs over the Arctic: the value of CH4 over...
The diverse range of mechanisms driving the Arctic amplification and global climate are not complete...
Atmospheric methane concentrations in the Arctic are the highest on earth. Sea ice retreat, thinning...
We find that summer methane (CH4) release from seabed sediments west of Svalbard substantially incre...
peer reviewedWe report on methane (CH4) stable isotope (d13C and d2H) measurements from landfast sea...
Large quantities of methane are stored in hydrates and permafrost within shallow marine sediments in...
Methane sources and sinks in the Arctic are poorly quantified. In particular, methane emissions from...
We examine an Arctic winter storm event, which led to ice break–up, the formation of open leads, and...
Arctic amplificaton of global warming has led to increased summer sea ice retreat, which influencesg...
This PhD thesis highlights the role of the cycles of sea ice formation and melt on the methane (CH4)...
peer reviewedWe report on methane (CH4) dynamics in landfast sea ice, brine and under-ice seawater a...
Latent heat polynyas are regions generating strong ice formation, convection and extensive water mas...
Global warming has led to a sharp decrease in Arctic summer sea ice extent and a dramatic ice mass l...
Methane is a potent greenhouse gas whose atmospheric concentration has increased over th...
Methane is a powerful greenhouse gas. In the ocean, it originates from gas bearing sediments, can be...
The maximum concentration of atmospheric methane (CH4) occurs over the Arctic: the value of CH4 over...
The diverse range of mechanisms driving the Arctic amplification and global climate are not complete...
Atmospheric methane concentrations in the Arctic are the highest on earth. Sea ice retreat, thinning...
We find that summer methane (CH4) release from seabed sediments west of Svalbard substantially incre...
peer reviewedWe report on methane (CH4) stable isotope (d13C and d2H) measurements from landfast sea...
Large quantities of methane are stored in hydrates and permafrost within shallow marine sediments in...
Methane sources and sinks in the Arctic are poorly quantified. In particular, methane emissions from...