Lakes account for about 10% of the boreal landscape and are, globally, responsible for approximately 30% of biogenic methane emissions that have been found to increase under changing climate conditions. However, the quantification of this climate-sensitive methane source is fraught with large uncertainty under warming climate conditions. Only a few studies have addressed the mechanisms of climate impact on methane emissions from northern lakes. while the warming of lake water and sediments plays a vital role, the increase in the length of the ice-free period is a key factor increasing methane emissions in the future.
— source University of Eastern Finland | Mar 26, 2020