tundra

Alaska Flips From Greenhouse Gas Sink to Source Because of Permafrost Melt

By Bruce Melton PEAbrupt changes, Methane, Permafrost

Alaskan Permafrost Flipped from Carbon Sink to Carbon Source Because of Permafrost Melt Climate Change is here. Alaskan permafrost is now emitting more greenhouse gases than it is storing according to work from Harvard, the Dublin Institute of Technology, Universities of Alaska, Colorado at Boulder, California at Irvine, NOAA and others in this powerhouse paper….

June 26, 2018

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Major Decreases in Growth of Alaskan Boreal Forest – Small Increase in Growth of Marginal Forests to the North Along the Edge of the Tundra

By Bruce Melton PEForest Mortality

One of the interesting things that this study has discovered is that decreased growth rates due to drought stress is not necessarily related to soil moisture. Forests with normal soil moisture can experience drought stress from excessive heat. It’s like their vascular system evolved without excessive heat and therefore the capacity of the trees vascular…

March 20, 2011

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Remember, average global warming over land is double the global average because of the cooling influence of our oceans and ice sheets, or 3.56 degrees C in December (6.4 F). and the average over the arctic is four times the global average or 7.12 C (12.8 F). Importantly, the increase in extreme temperature is far greater than the average, and extreme weather increases nonlinearly because of the basics of heat and energy physics, where a little warming does not create a little more extremeness in the weather, it creates a lot more.

Alaska Flips From Greenhouse Gas Sink to Source Because of Permafrost Melt

Major Decreases in Growth of Alaskan Boreal Forest – Small Increase in Growth of Marginal Forests to the North Along the Edge of the Tundra

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