A
team of researchers at the German Research Centre for Geosciences has
discovered another major source of emissions of methane that would
result from the thawing of tundras. These seeps from ancient gas
deposits underneath the frozen ground have been known about for a while,
but until now, they have been poorly understood.
This new
study was conducted over 10,000 square kilometres of the Mackenzie Delta
in Canada. In this land, it was found that the seeps were responsible
for 17 percent of the total greenhouse gas emissions from the land even
though they comprised of about one percent of the area.
One of
the most feared scenarios of global warming is that as the temperature
rises, the vast amount of organic material currently trapped in ice
could be released into the atmosphere, causing an even more vicious
effect on the global temperature.
“We were a bit surprised … we saw
these very strong emissions. It means a
very tiny fraction of the area produces quite a big share of the
estimated annual emissions," said Professor Torsten Sachs, one of the
researchers behind this study. “And that tells us maybe we should not
just focus on biogenic methane
production in the upper lawyers of the permafrost, but pay a bit more
attention to this potential effect."
Read more about this fascinating story at: http://www.independent.co.uk/news/science/thawing-permafrost-global-warming-climate-change-glaciers-antarctic-threat-mackenzie-delta-a7849211.html
Photo: Methane bubbles in Abraham Lake, Alberta, Canada via juneaidrao on Flickr
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Monday, July 24, 2017
THAWING PERMAFROST COULD RELEASE MUCH MORE METHANE THAN PREVIOUSLY THOUGHT
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