Lakes make up about 10%boreallandscape and are responsible for approximately 30% of biogenic methane emissions
Attempts to estimate methane emissions from boreal lakesUntil now, they were associated with great uncertainty in the conditions of increasing temperatures - the estimate given by scientists, a few years later became irrelevant due to climate change.
In a new study, scientists estimate that byAt the end of the century, methane emissions from boreal lakes in Finland will increase by 26-59%. The work showed that although warming of water and bottom sediments plays an important role, increasing the length of the ice-free period is a key factor in increasing future methane emissions.
"Boreal lakes remain significantsource of methane under global warming conditions during this century, and increases in methane emissions vary with latitude. Our study showed that the largest increases in emissions will occur in northern lakes located at low latitudes."
Narasinya Shurpali, lead author of the study
Previouslywas reportedthat ice volcanoes appeared on Lake Michigan - a natural phenomenon when waves moving under ice break through cracks.