Sunsettommy
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Not a lot of people know that
What Happened To Greenland’s Tipping Point?
By Paul Homewood
JUNE 22, 2020
Excerpt:
Ten years ago, the Guardian warned us that Greenland would have passed a tipping point by now, with the whole ice sheet due to disappear by the end of the century:
The entire ice mass of Greenland will disappear from the world map if temperatures rise by as little as 2C, with severe consequences for the rest of the world, a panel of scientists told Congress today.
Greenland shed its largest chunk of ice in nearly half a century last week, and faces an even grimmer future, according to Richard Alley, a geosciences professor at Pennsylvania State University
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Yet science research shows that CO2 doesn't determine snow and ice cover of Greenland at all:
Greenland’s Kilometers-Thick Ice Sheet Routinely Disappears (‘Ice-Free’) When CO2 Levels Hover Below 280 ppm
By Kenneth Richard on 22. June 2020
Excerpt:
There is no apparent connection between Greenland’s ice melt and atmospheric CO2 concentrations.
The ice that blankets Greenland today stands over 3 kilometers high. This ice volume can almost completely vanish – with just a tiny ice cap in the eastern highlands remaining – when CO2 concentrations only reach pre-1750 levels, or 260 to 280 ppm.
For about 280,000 of the last 2.6 million years (encompassing the Pleistocene Ice Age), Greenland was ice-free (Schaefer et al., 2016).
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" For the last few centuries, the volume of ice on the Greenland ice sheet has been much larger than it has been for all of the last 10,000 years (Mikkelson et al., 2018). "
If true, this is devastating to the increasing CO2 levels will melt down snow and glaciers argument.
What Happened To Greenland’s Tipping Point?
By Paul Homewood
JUNE 22, 2020
Excerpt:
Ten years ago, the Guardian warned us that Greenland would have passed a tipping point by now, with the whole ice sheet due to disappear by the end of the century:
The entire ice mass of Greenland will disappear from the world map if temperatures rise by as little as 2C, with severe consequences for the rest of the world, a panel of scientists told Congress today.
Greenland shed its largest chunk of ice in nearly half a century last week, and faces an even grimmer future, according to Richard Alley, a geosciences professor at Pennsylvania State University
LINK
=====
Yet science research shows that CO2 doesn't determine snow and ice cover of Greenland at all:
Greenland’s Kilometers-Thick Ice Sheet Routinely Disappears (‘Ice-Free’) When CO2 Levels Hover Below 280 ppm
By Kenneth Richard on 22. June 2020
Excerpt:
There is no apparent connection between Greenland’s ice melt and atmospheric CO2 concentrations.
The ice that blankets Greenland today stands over 3 kilometers high. This ice volume can almost completely vanish – with just a tiny ice cap in the eastern highlands remaining – when CO2 concentrations only reach pre-1750 levels, or 260 to 280 ppm.
For about 280,000 of the last 2.6 million years (encompassing the Pleistocene Ice Age), Greenland was ice-free (Schaefer et al., 2016).
LINK
===
" For the last few centuries, the volume of ice on the Greenland ice sheet has been much larger than it has been for all of the last 10,000 years (Mikkelson et al., 2018). "
If true, this is devastating to the increasing CO2 levels will melt down snow and glaciers argument.
