Key Points Since the 1990s, parts of the Yukon coast are in a phase of enhanced shoreline
retreat Gravel features grew in areal extent since the 1950s and were largest in the latest …

Reducing uncertainties about carbon cycling is important in the Arctic where rapid
environmental changes contribute to enhanced mobilization of carbon. Here we quantify soil …

Retrogressive thaw slumps (RTSs) are among the most active landforms in the Arctic; their
number has increased significantly over the past decades. While processes initiating …

Erosion of permafrost coasts has received increasing scientific attention since 1990s
because of rapid land loss and the mobilisation potential of old organic carbon. The majority …

Ice-rich permafrost coasts often undergo rapid erosion, which results in land loss and
release of considerable amounts of sediment, organic carbon and nutrients, impacting the …

The Arctic marine climate system is changing rapidly, which is seen in the warming of the
ocean and atmosphere, decline of sea ice cover, increase in river discharge, acidification of …

Low-level flights over tundra wetlands in Alaska and Canada have been conducted during
the Airborne Measurements of Methane Emissions (AirMeth) campaigns to measure …

Waterbodies in the arctic permafrost zone are considered a major source of the greenhouse
gas methane (CH 4) in addition to CH 4 emissions from arctic wetlands. However, the spatio …

Retrogressive thaw slumps (RTSs) are among the most active thermokarst landforms in the
Arctic and deliver a large amount of material to the Arctic Ocean. However, their contribution …

Growing season surface–atmosphere exchange of carbon dioxide and methane were
quantified at Fish Island, a wetland site in the lower northeast Mackenzie River Delta …