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View Full Version : “Climate Change is Now More Certain Than Ever,” New Report Says



Fraser
2014-Feb-28, 02:41 PM
Climate change is one of the defining issues of our time. So begins the latest report by the U.S. National Academy of Sciences and the United Kingdom’s Royal Society. The two institutions agree: climate change is not only indisputable, it’s largely the result of human activities. The bulk of the 36-page report is presented in […]

More... (http://www.universetoday.com/109831/climate-change-is-now-more-certain-than-ever-new-report-says/)

Aristarchusinexile
2014-Feb-28, 04:24 PM
And it's happening a LOT faster than almost anyone acknowledges .. when 'they' say things like 'sea level rise of 15 feet in 100 years' expect to see it in 20 or 25.

profloater
2014-Feb-28, 04:55 PM
I wonder who "they" are (the authors of this report?) and what evidence you have that they ("almost anyone") are making understated claims?

profloater
2014-Feb-28, 05:05 PM
And it's happening a LOT faster than almost anyone acknowledges .. when 'they' say things like 'sea level rise of 15 feet in 100 years' expect to see it in 20 or 25.
I checked quickly USA EPA predictions range from 15 to 20 inches 2050 rising to 32 to 55 inches 2100.So they do not seem to suggest 15 FEET in 100 years, and less than one foot in 25 years, so what makes you think it will be worse than that.?

Aristarchusinexile
2014-Feb-28, 05:31 PM
I checked quickly USA EPA predictions range from 15 to 20 inches 2050 rising to 32 to 55 inches 2100.So they do not seem to suggest 15 FEET in 100 years, and less than one foot in 25 years, so what makes you think it will be worse than that.?

I watched http://www.pbs.org/wgbh/nova/earth/extreme-ice.html a recently made DVD on the melting of the Greenland Ice Cap as well as what's melting in Antarctica and Iceland .. very scientific .. and that DVD said to expect 15 feet in 100 years .. also there is a volcanoe under a glacier in Iceland which is expected to blow. New science shows that global warming contributes directly to the advance of glaciers because surface ice melts, finds its way in small rivers to the base of the glacier, and lubricates the surfaces there, allowing the glaciers to slide much faster than anyone thought possible. The Greenland ice has also been found to be melting from heat in the rocks beneath it, and as Icelandic volcanoes are increasing in activity so also might be the heat below the ice in Greenland. http://iceagenow.info/2013/08/greenland-ice-melting/ Greenland's ice loss has doubled in the past several years .. "... 2012 saw the highest amount of surface melt and runoff from Greenland ice ever recorded. Greenland lost 121 billion tons of ice a year from 1993 to 2005 and 229 billion tons a year between 2005 and 2010." http://news.nationalgeographic.com/news/2014/01/140102-greenland-ice-sheet-lake-global-warming-science/

Your USA EPA won't want to frighten people, suicide is already a major epedemic among the young people our economy depends on for survival, and seaside real estate values have to be protected. My guess of 20 to 25 years is just an educated guess based on lots of reading over the past 10 years, news reports, as well as seeing the hastening retreat of glaciers in Canada and the U.S.

By the way, these ultrafast changes don't just involve sea levels, according to a report mentioned in the mainstream media the Great Lakes could be virtually dry in 20 years .. again, unfortunately, I can't provide a source for that either .. but there are plenty of other sources about how serious the situation is becoming.
http://thinkprogress.org/climate/2014/01/28/3193301/climate-change-draining-great-lakes/#
http://grist.org/list/the-great-lakes-may-be-drying-up/
http://159.54.242.46/weather/article/296424/3/Two-Great-Lakes-at-shallowest-levels-ever-recorded

Trakar
2014-Mar-08, 08:14 AM
I checked quickly USA EPA predictions range from 15 to 20 inches 2050 rising to 32 to 55 inches 2100.So they do not seem to suggest 15 FEET in 100 years, and less than one foot in 25 years, so what makes you think it will be worse than that.?

EPA is a better source than most, but probably not the best place for a good survey of climate science assessments. Latest IPCC report (http://www.ipcc.ch/report/ar5/wg1/#.UxrIn7eYZxA) discusses the results of several different lines of evidence and research. 2.4 meters is the currently understood maximum by 2100, due to understood melt and thermal expansion limits, the average across the range of projections from all sources looks to be about 1 meter. It should be noted however, that this is the latest revision of what was an average of projections of about 18" a decade ago, 24" 7 years ago, and is now around 39 inches, there may be a bit of hyperbole in his proclamations.

What is more problematic is that some studies are indicating that by the early part of next century average sea level rise could well be between 0.5 and 1.0 cm per year. That combined with the knowledge that the last time our planet's surface temperature was as high as it is right now, sea levels were 5-6 Meters higher than they are now (yet alone how much higher they were the last time the Earth's surface was the 2-4 degrees C warmer than now it will be in the early part of next century.