Scientist Predicts Disastrous Sea-Level Rise and Ice Sheets To CollapsePosted: July 19, 2013
“At this rate, the Arctic Ocean could be nearly ice-free at the end of summer by 2012, much faster than previous predictions.” “The Arctic is often cited as the canary in the coal mine for climate warming…Now as a sign of climate warming, the canary has died. It is time to start getting out of the coal mines.”
NASA climate scientist Jay Zwally.
NASA’s James Hansen 2007: Sea Level to rise 25 Metres – Ice Sheets To Collapse
JAMES HANSEN: There are two things that are cause of concern. First of all, if we look at the history of the Earth, we know that at the warmest interglacial periods, which were probably less than 1 degree Celsius warmer than today, it was still basically the same planet. Sea level was perhaps a few metres higher. But if we go back to the time when the Earth was two or three degrees Celsius warmer, that’s about three million years ago, sea level was about 25 metres higher, so that tells us we had better keep additional warming less than about one degree. And the other piece of evidence is not from the history of the Earth but from looking at the ice sheets themselves, and what we see is that the disintegration of ice sheets is a wet process and it can proceed quite rapidly. We see that the ice streams have doubled in their speed on Greenland in the last few years and even more concern is west Antarctica because it’s now losing mass at about the same rate as Greenland, and west Antarctica, the ice sheet is sitting on rock that is below sea level. So it is potentially much more in danger of collapsing and so we have both the evidence on the ice sheets and from the history of the Earth and it tells us that we’re pretty close to a tipping point, so we’ve got to be very concerned about the ice sheets. The 7.30 Report – ABC
ANOTHER DUD ALARMIST PREDICTION
Hansen’s alarmist forecasts are based on climate modelling which suggest the “Earth is now warming…about two-tenths of a degree Celsius per decade”. However satellite measurements and 30,000 weather balloons are yet to find any of this warming over the past 16 years. In fact 73 of the CMIP5 models are averaging 0.25°C/decade ‘hotter’ than current observations. A substantial divergence between modelled temperature and observed reality.
Let’s see how the Ice and Sea-levels are fairing 5 years on from Hansen’s dire prediction as CO2 concentration hits 400ppm in 2013.
What some of the latest science tells us…
SEA LEVEL RISE:
Journal Article 2009: New Perspective on Global Warming & Sea Level Rise: Modest Future Rise with Reduced Threat “It is concluded that the best guess value of SLR for the next 100 years is a relatively modest 23 cm +/- 5 cm which poses little threat to coastal areas of the world either at present or in future.”
Nature Study 2013: Future sea-level rise from Greenland’s main outlet glaciers in a warming climate “we project a contribution of 19 to 30 millimetres to SLR from these glaciers by 2200.”
ICE SHEETS & SEA-ICE:
Nature study 2012: Recent Antarctic Peninsula warming relative to Holocene climate and ice-shelf history “the high rate of warming over the past century is unusual (but not unprecedented) in the context of natural climate variability over the past two millennia.”
2013: Hiding The Decline – 2013 The coldest summer on record
July 2013: Arctic Alarmist Hell Week Continues
MORE ARCTIC ALARMISM:
2013: Arctic Alarmists Trying To Weasel Their Way Out Of Their BS “New research shows that glaciologists still cannot say for certain whether the Earth’s north and south polar ice is melting faster”
Catastrophic Anthropogenic Climate Alarmism – the human cost » Global Warming Lies Kill
See also: Forget global warming!? Earth undergoing global COOLING since 2002! Climate Scientist Dr. Judith Curry: ‘Attention in the public debate seems to be moving away from the 15-17 year ‘pause’ to the cooling since 2002’