Comments on: 40 scientists write: Climate disaster, an urgent challenge http://www.crikey.com.au/2008/10/21/40-scientists-write-climate-disaster-an-urgent-challenge/ now with extra source Sun, 12 Feb 2012 11:11:30 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: soil carbon http://www.crikey.com.au/2008/10/21/40-scientists-write-climate-disaster-an-urgent-challenge/#comment-21467 soil carbon Thu, 01 Jan 1970 10:00:00 +0000 #comment-21467 Regarding a window of opportunity existing to attempt to halt a climate crisis by means of CO2 capture through soil-carbon enrichment and preservation. Tim Flannery and Ross Garnaut have also identified soils as one of our real hopes.<br />See www.soilcarbon.com.au for more.<br /> Regarding a window of opportunity existing to attempt to halt a climate crisis by means of CO2 capture through soil-carbon enrichment and preservation. Tim Flannery and Ross Garnaut have also identified soils as one of our real hopes.
See http://www.soilcarbon.com.au for more.

]]> By: Malcolm Robinson http://www.crikey.com.au/2008/10/21/40-scientists-write-climate-disaster-an-urgent-challenge/#comment-21468 Malcolm Robinson Thu, 01 Jan 1970 10:00:00 +0000 #comment-21468 As Andrew Glikson’s writings become more strident they become less credible as science. The first of yesterday’s two pieces is largely a regurgitation of James Hansen’s letter to Kevin Rudd earlier this year which my recollection tells me Glikson has previously submitted to Crikey. Here are a few examples:<br /><br />‘Arctic summer sea ice to disappear with a decade’. The facts are that 2008 ice cover was 10% more than 2007, the Greenland icecap continues to thicken and Antarctic ice cover is at record levels.<br />Bureau of Meteorology records show that rainfall in southern Australia has not decreased in the last century and there have been several droughts during that period comparable to the present one.<br />The claimed “observed’ warming of the oceans is not happening. The 3000+ Argo Buoys scattered around the oceans which measure temperatures from the surface to 700 meters depth show a cooling since they were established 5 years ago.<br />Global temperature levels have stubbornly refused to follow the carbon dioxide lead for the last 10 years, no different really from most of the last century.<br />Ice cores show that for the last 400,000+ years carbon dioxide levels have not preceded temperature rises but followed them by 800-1000 years. And isn’t it interesting that today, in a period of rising CO2 we are 800-1000 years after the Medieval Warm Period?<br />Glikson’s second piece in yesterday’s Crikey refers to abrupt temperature changes in Greenland’s past. It happened in the 1920’s but it wasn’t related to CO2. He provides links to scientific papers reporting similar events 8000+ and 11,000+ years ago but the papers don’t relate these events to CO2 either. So why does he include them in an article which otherwise is entirely related to CO2?<br /><br /> As Andrew Glikson’s writings become more strident they become less credible as science. The first of yesterday’s two pieces is largely a regurgitation of James Hansen’s letter to Kevin Rudd earlier this year which my recollection tells me Glikson has previously submitted to Crikey. Here are a few examples:

‘Arctic summer sea ice to disappear with a decade’. The facts are that 2008 ice cover was 10% more than 2007, the Greenland icecap continues to thicken and Antarctic ice cover is at record levels.
Bureau of Meteorology records show that rainfall in southern Australia has not decreased in the last century and there have been several droughts during that period comparable to the present one.
The claimed “observed’ warming of the oceans is not happening. The 3000+ Argo Buoys scattered around the oceans which measure temperatures from the surface to 700 meters depth show a cooling since they were established 5 years ago.
Global temperature levels have stubbornly refused to follow the carbon dioxide lead for the last 10 years, no different really from most of the last century.
Ice cores show that for the last 400,000+ years carbon dioxide levels have not preceded temperature rises but followed them by 800-1000 years. And isn’t it interesting that today, in a period of rising CO2 we are 800-1000 years after the Medieval Warm Period?
Glikson’s second piece in yesterday’s Crikey refers to abrupt temperature changes in Greenland’s past. It happened in the 1920’s but it wasn’t related to CO2. He provides links to scientific papers reporting similar events 8000+ and 11,000+ years ago but the papers don’t relate these events to CO2 either. So why does he include them in an article which otherwise is entirely related to CO2?

]]> By: Bruce Hogben http://www.crikey.com.au/2008/10/21/40-scientists-write-climate-disaster-an-urgent-challenge/#comment-21469 Bruce Hogben Thu, 01 Jan 1970 10:00:00 +0000 #comment-21469 NASA's chief climate scientist James Hansen, who has refused to be silenced by the Bush Administration, used to think we could perhaps survive in a world with 450 parts per million atmospheric concentrations of CO2. In recent years, however, he has become increasingly alarmed at evidence this is not the case, and now warns that the tolerable maximum is 350ppm. Meanwhile, we have reached 387ppm, and this figure is rising at a steeply accelerating rate. You can easily find more information with any search engine, but try this for starters: http://www.care2.com/c2c/share/detail/740720 or http://www.350.org/en/about/science NASA’s chief climate scientist James Hansen, who has refused to be silenced by the Bush Administration, used to think we could perhaps survive in a world with 450 parts per million atmospheric concentrations of CO2. In recent years, however, he has become increasingly alarmed at evidence this is not the case, and now warns that the tolerable maximum is 350ppm. Meanwhile, we have reached 387ppm, and this figure is rising at a steeply accelerating rate. You can easily find more information with any search engine, but try this for starters: http://www.care2.com/c2c/share/detail/740720 or http://www.350.org/en/about/science

]]> By: Richard McGuire http://www.crikey.com.au/2008/10/21/40-scientists-write-climate-disaster-an-urgent-challenge/#comment-21470 Richard McGuire Thu, 01 Jan 1970 10:00:00 +0000 #comment-21470 "Greenland and west Antarctic ice caps would, if atmospheric CO2 equivalent concentrations reached 450ppm, very likely melt rapidly"......???? Correct me if I'm wrong.... On the subject of CO2 equivalent haven't we already passed that threshold?..... Do not CO2 equivalent concentrations currently stand at 455 ppm? “Greenland and west Antarctic ice caps would, if atmospheric CO2 equivalent concentrations reached 450ppm, very likely melt rapidly”……???? Correct me if I’m wrong…. On the subject of CO2 equivalent haven’t we already passed that threshold?….. Do not CO2 equivalent concentrations currently stand at 455 ppm?

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