Rachael Treharne

TL;DR: In this paper, a consensus is emerging that the underlying causes and future dynamics of so-called Arctic greening and browning trends are more complex, variable and inherently scale-dependent than previously thought.

TL;DR: In this paper, the effect of permafrost thaw on CH4 emissions from peatlands in northern Canada has been investigated, and the authors conclude that thaw-induced changes in surface wetness and wetland area, rather than the anaerobic decomposition of previously frozen C, may determine the effect.

TL;DR: Recent extensive damage to dominant, short, perennial heath and tundra plant populations in boreal and Arctic Norway and Svalbard is reported, suggesting that weather and biotic extreme events potentially have strong impacts on the vegetation state of northern lands.

TL;DR: In this paper, the Paris Agreement provides ongoing opportunities to increase ambition to reduce society's greenhouse gas emissions, which will also reduce emissions from thawing permafrost and Arctic wildfires, which are not fully accounted for in global emissions budgets.

TL;DR: The scale of reductions in ecosystem CO2 uptake highlights the need for a process‐based understanding of Arctic browning in order to predict how vegetation and CO2 balance will respond to continuing climate change.