ON METHANE EMISSION IN THE ARCTIC
The problem of modern climate change is still often considered only as a problem of direct anthropogenic influence emission of greenhouse gases from human activity. However, more than half of methane sources are determined by various natural mechanisms. Many of these mechanisms have a positive temperature dependence. This fact may be the reason for the increase in emissions in the polar zone, which is caused by the positive feedback between the warming processes and methane emissions. Our analysis of land, sea and satellite measurements of methane fluxes in the Arctic showed that an increase in methane emissions from such buried methane reservoirs as methane gas hydrates, permafrost zones, lakes and northern marshes can significantly exceed the power of anthropogenic sources. At the same time, the contribution of the greenhouse effect from the work of positive feedbacks may turn out to be comparable or even more than anthropogenic contribution in the arctic zone.