Ten Points A-Tipping...

[GliderGuider]

The latest collection of evidence for positive climate feedbacks, courtesy of Guy McPherson:

The point of no return

1. Methane hydrates are bubbling out the Arctic Ocean (Science, March 2010)
   
2. Warm Atlantic water is defrosting the Arctic as it shoots through the Fram Strait (Science, January 2011)
   
3. Siberian methane vents have increased in size from less than a meter across in the summer of 2010 to about a kilometer across in 2011 (Tellus, February 2011)
   
4. Drought in the Amazon triggered the release of more carbon than the United States in 2010 (Science, February 2011)
   
5. Peat in the world’s boreal forests is decomposing at an astonishing rate (Nature Communications, November 2011)
   
6. Methane is being released from the Antarctic, too (Nature, August 2012)
   
7. Russian forest and bog fires are growing (NASA, August 2012)
   
8. Cracking of glaciers accelerates in the presence of increased carbon dioxide (Journal of Physics D: Applied Physics, October 2012)
   
9. Exposure to sunlight increases bacterial conversion of exposed soil carbon, thus accelerating thawing of the permafrost (Proceedings of the National Academy of Sciences, February 2013)
   
10. Arctic drilling was fast-tracked by the Obama administration during the summer of 2012

[phantom power]

1. oopsie

[GliderGuider]

2. +100

[phantom power]

3. Good judgement comes from experience. Which comes from bad judgement.

[stuntcat]

4. ok, made me laff

& that's hard sometimes

[CRH]

5. Indications are abound, ... n/t

[PETRUS]

6. Other possible tipping points

Sometime last year (I think) I came across an article that listed several potential environmental tipping points, not all of them climate related. One had to do with the percentage of land developed, another had to do with the amount of nitrogen fixed. Anyway, I haven't been able to retrace my steps and find that article/list. Does anyone know where I might find this kind of info?