Re: Greenland faces land crisis as global warming heats up



On 2011-12-11 11:33:04 -0600, Jim_Higgins said:

On 12/11/11 10:30 AM, Earl Evleth wrote:


Maybe it is the cosmic rays?


Study: Greenland faces land crisis as global warming heats up

A new study released Friday finds that Greenland has risen in recent years
as the rate of ice melting has increased, a startling revelation that
scientists attribute to global warming.

Speaking at a conference on Friday, a team of scientists from Ohio State
University said a network of 50 GPS stations measured the uplift as the ice
loss, noting that the rate of ice loss has accelerated in southern Greenland
by 100 billion tons. The study was lead by Ohio State University researcher
Michael Bevis.


Mr. Bevis noted that an unusually hot melting season in 2010 accelerated ice
loss in southern Greenland by 100 billion tons, which led to large portions
of the island¹s bedrock rising an additional quarter of an inch. The
discovery was noted by the team in a paper released ahead of the conclusion
of a key global climate change conference in Durban, South Africa.

³Pulses of extra melting and uplift imply that we¹ll experience pulses of
extra sea level rise,² said Mr. Bevis. ³The process is not really a steady
process.²

Mr. Belvis said the only explanation for the strange uplift is the rate of
ice melt caused, in part, by global warming. The melting and the resulting
rise in sea level is one of the hallmarks of global warming, which has force
researchers to resort to using some novel methods to overcome different
seasonal and regional signals that obstruct their ability to measure the
effect of rising temperatures.

³Really, there is no other explanation. The uplift anomaly correlates with
maps of the 2010 melting day anomaly,² Mr. Bevis said. ³In locations where
there were many extra days of melting in 2010, the uplift anomaly is
highest.²

The team of scientists noted that a melting day ³anomaly² refers to the
number of extra melting days ­ that is, days that were warm enough to melt
ice ­ relative to the average number of melting days per year over several
decades. The occurrence of ³melting day anomalies² have increased in recent
years as global emissions continue to increase.

Speaking on Friday, Mr. Bevis noted that in 2010, the southern half of
Greenland lost an extra 100 billion tons of ice under conditions that
scientists would consider anomalously warm.

Previous studies have recorded measurements indicating that as that ice
melted away, the bedrock beneath it rose. The amount of uplift differed from
station to station, depending on how close the station was to regions where
ice loss was greatest. Southern Greenland stations that were very close to
zones of heavy ice loss rose one inch every five months. Stations that were
located far away typically rose at least less than half and inch during the
course of the 2010 melting season. The weight of ice sheets push down on the
bedrock it rests on, scientists noted, and as the ice sheets lose mass, the
bedrock rises. Scientists said the process is known as Glacial Isostatic
Adjustment, adding that it has been happening since the planet came out of
an ice age around 17,000 years ago.

The team that led the study said that is was conducted by using
high-precision global positioning system (GPS) data that measure the
vertical motion of the rocky margins around Greenland, Iceland and other
regions of the island.

The study comes just two weeks after a series of global climate change
meetings in Durban, South Africa. The meeting was set to concluded on
Friday. The meetings have pitted the U.S. against emerging powers China and
India over whether to hold each other accountable for greenhouse-gas
emissions. The European Union has indicated that the world¹s three biggest
polluters, China, India and the United States, have been slowing down the
pace of negotiations on a roadmap to a future agreement.



Greenland has now reverted to conditions similar to those when it was first settled and named. What goes around...

Ask a Texas about how there La Nina driven claimate forecast for drier than usual conditions is working our. I think their drought is ending.
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