With further Arctic Amplification, How fast will Greenhouse Gas emissions accelerate in the Arctic Circle?

Introduction to Methane Hydrate “Methane Hydrates and Contemporary Climate Change” (2011) IDENTIFICATION This post “A Mechanism for Shallow Methane Hydrate Dissociation”, explores possible mechanism which could release vast quantities of shallow Methane Hydrate into the ocean and atmosphere.       CH4 Release The following studies explore the release of CH4 emissions in the Arctic region. OBSERVATION…

The melting of permafrost

Updated: Discovery of Positive Methane Feedback from Permafrost Thaw

Update: As pointed out by one of the authors, Rhiannon Mondav, the microbe is not considered an entire new discovery. (See comment below). Phys.org explains: Scientists from The University of Queensland have discovered a microbe that is set to play a significant role in future global warming. UQ’s Australian Centre for Ecogenomics researcher Ben Woodcroft said…

Thawing Permafrost Could Release Vast Carbon Deposits, Diseases

by Science World Report | January 8, 2014 | Release URL Dr Guido Grosse has been studying the Arctic for fourteen years to find out how the frozen ground, known as the permafrost, is reacting to an environment that is getting hotter all the time. The samples he has drilled out – in regions so…

USGS: Climate-Hydrate Interactions

The U.S. Geological Survey Gas Hydrates Project Release URL | Access date: January 3rd 2014. Climate studies in the USGS Gas Hydrates Project have become increasingly important since 2007 and focus on the impact of Late Pleistocene to contemporary climate change on the stability of methane hydrate deposits. The goal is to determine how much, if any,…

The melting of permafrost

Permafrost Methane Time Bomb

First published on YouTube Sep 9, 2012: Because of global warming, permafrost — the frozen ground that covers the top of the world — has been thawing rapidly over the last three decades. But there is cause for concern beyond the far north, because the carbon released from thawing permafrost could raise global temperatures even…

Estimating northern polar CH4 flux

A compilation of related science with some commentary. Microbes in thawing permafrost: the unknown variable in the climate change equation David E Graham, Matthew D Wallenstein, Tatiana A Vishnivetskaya, Mark P Waldrop,Tommy J Phelps, Susan M Pfiffner, Tullis C Onstott, Lyle G Whyte, Elizaveta M Rivkina,David A Gilichinsky, Dwayne A Elias, Rachel Mackelprang, Nathan C…

Arctic methane outgassing on the East Siberian Shelf

SkepticalScience.com by John Mason on January 19 2012: In December 2011, following a fresh flurry of sometimes conflicting media reports about methane outgassing on the East Siberia Arctic Shelf (ESAS), we decided to go and talk to the people doing the work on the ground. We are pleased to report that Dr Natalia Shakhova (NS…

Methane release from the East Siberian Arctic Shelf and the Potential for Abrupt Climate Change

Natalia Shakhova, Igor Semiletov | Source University of Alaska, Fairbanks, International Arctic Research Centre, USA Russian Academy of Sciences, Far Eastern Branch, Pacific Oceanological Institute, Vladivostok, Russia “Opening the Arctic”, Washington, Nov.30th-Dec.2nd, 2010. Outline What do we know about methane potential of the ESAS? Is there a mechanism responsible for transformation of methane potential to…

NASA Finds ‘Amazing’ Levels Of Arctic Methane And CO2, Asks ‘Is a Sleeping Climate Giant Stirring in the Arctic?’

By Joe Romm / Climate Progress – on Jun 13, 2013: A NASA science team has observed “amazing and potentially troubling” levels of methane and CO2 from the rapidly warming Arctic. Given the staggering amount of carbon trapped in the permafrost — and the fact that methane is a very potent heat-trapping gas — the…

Large methane emission upon spring thaw from natural wetlands in the northern permafrost region

CH4 emission upon spring thaw in the high latitudes might be enhanced by the projected climate warming Abstract The permafrost carbon–climate feedback is one of the major mechanisms in controlling the climate–ecosystem interactions in northern high latitudes. Of this feedback, methane (CH4) emission from natural wetlands is critically important due to its high warming potential.…

Methane in the Arctic Circle

Methane In conditions without oxygen, such as at the bottom of a lake orthe sea, decomposition turns organic matter into methane, rather than carbon dioxide. Large increases in methane emissions would be a grave concern, because methane is 25 times moreeffective at warming the planet than carbon dioxide (over a 100 year time scale). Lakes,…

Stable Antarctic Permafrost Melting Faster than Expected

University of Texas: July 24, 2013 AUSTIN, Texas — For the first time, scientists have documented an acceleration in the melt rate of permafrost, or ground ice, in a section of Antarctica where the ice had been considered stable. The melt rates are comparable with the Arctic, where accelerated melting of permafrost has become a…

ScienceCasts: The “Sleeping Giant” in Arctic Permafrost

Visit science.nasa.gov/ for breaking science news. Arctic permafrost soils contain more accumulated carbon than all the human fossil-fuel emissions since 1850 combined. Warming Arctic permafrost, poised to release its own gases into the atmosphere, could be the “sleeping giant” of climate change. NASA Finds ‘Amazing’ Levels Of Arctic Methane And CO2, Asks ‘Is a Sleeping Climate Giant Stirring…

Estimating the permafrost-carbon feedback on global warming

A key uncertainty is the fraction of carbon that might be decomposed under anaerobic conditions – resulting potentially in methane emissions to the atmosphere. Given the high warming potential of methane, the overall magnitude of the permafrost-carbon feedback will depend strongly on this fraction. Thawing of permafrost and the associated release of carbon constitutes a…

Soil carbon and climate change: from the Jenkinson effect to the compost-bomb instability

Study: Long-term warming equivalent to 10°C per century could be sufficient to trigger compost-bomb instability in drying organic soils Wiley: First generation climate–carbon cycle models suggest that climate change will suppress carbon accumulation in soils, and could even lead to a net loss of global soil carbon over the next century. These model results are qualitatively…