https://www.eurekalert.org/pub_releases/2020-10/uoh-tpr101420.php
News Release 14-Oct-2020
University of Helsinki
When permafrost thaws due to global warming, not only the greenhouse gases known to all, but also organic compounds are released from the soil. They may have a significant impact on climate change.
Arctic peatlands are very rich in carbon. The effects of the Arctic permafrost thawing on carbon dioxide and methane emissions have been investigated and assessed extensively globally. It is known that when the permafrost thaws, carbon dioxide and methane, which accelerate climate change, are released from the soil. Less attention has been paid to the fact that thawing permafrost may also release volatile organic compounds into the air.
Researchers at the University of Helsinki observed in a study for the first time that large quantities of volatile organic compounds, including monoterpenes, sesquiterpenes and diterpenes, are released from permafrost peatland soil thawed in laboratory incubations. The peatland soil samples were collected from Finnish Lapland. The study demonstrated that global warming accelerates the release of these compounds, particularly those with lower volatility, from the Arctic permafrost.
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