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A groggy climate giant: subsea permafrost is still waking up after 12,000 years
In the far north, the swelling Arctic Ocean inundated vast swaths of coastal tundra and steppe ecosystems. Though the ocean water was only a few degrees above freezing, it started to thaw the permafrost beneath it, exposing billions of tons of organic matter to microbial breakdown. The decomposing organic matter began producing CO2 and CH4, two of the most important greenhouse gases.
Though researchers have been studying degrading subsea permafrost for decades, difficulty collecting measurements and sharing data across international and disciplinary divides have prevented an overall estimate of the amount of carbon and the rate of release. A new study, led by Ph.D. candidate Sara Sayedi and senior researcher Dr. Ben Abbott at Brigham Young University (BYU) published in IOP Publishing journal Environmental Research Letters, sheds light on the subsea permafrost climate feedback, generating the first estim
Study Sheds Light on the Subsea Permafrost Climate Feedback
Written by AZoCleantechDec 22 2020
In the far north, the swelling Arctic Ocean inundated vast swaths of coastal tundra and steppe ecosystems. Though the ocean water was only a few degrees above freezing, it started to thaw the permafrost beneath it, exposing billions of tons of organic matter to microbial breakdown.
The decomposing organic matter began producing CO
2 and CH
4, two of the most important greenhouse gases.
Though researchers have been studying degrading subsea permafrost for decades, difficulty collecting measurements and sharing data across international and disciplinary divides have prevented an overall estimate of the amount of carbon and the rate of release.
With first positive tests in Antarctica, no continent is untouched by coronavirus
The virus was detected in 26 members of the Chilean military and 10 maintenance workers stationed at the Base General Bernardo O’Higgins Riquelme in the Antarctic Peninsula. December 23, 2020 1:09:27 am
Reports of the cases appear to end Antarctica s nine-month escape from a virus that has been found in almost every other corner of the world. (Photo: Reuters)
Antarctica is no longer the last continent free from the coronavirus after 36 people stationed at a Chilean research base tested positive, local media reported.
The virus was detected in 26 members of the Chilean military and 10 maintenance workers stationed at the Base General Bernardo O’Higgins Riquelme in the Antarctic Peninsula, authorities said in a statement to 24 Horas, adding that they were tested after reports that some had developed symptoms.