It's all happening far faster than predicted.
Back in 1997 "nobody in their wildest expectations," would have
forecast the dramatic sudden loss of summer sea ice in the Arctic that
started about five years ago, Weaver said.
From 1993 to 1997, sea ice would shrink on average in the summer to
about 2.7 million square miles.
The average for the last five years is less than 2 million square
miles.
What's been lost is the size of Alaska.
Antarctica had a slight increase in sea ice, mostly because of the
cooling effect of the ozone hole, according to the British Antarctic
Survey.
At the same time, large chunks of ice shelves � adding up to the size
of Delaware � came off the Antarctic peninsula.
While melting Arctic ocean ice doesn't raise sea levels, the melting
of giant land-based ice sheets and glaciers that drain into the seas
do.
Those are shrinking dramatically at both poles.
Measurements show that since 2000, Greenland has lost more than 1.5
trillion tons of ice, while Antarctica has lost about 1 trillion tons
since 2002, according to two scientific studies published this fall.
In multiple reports from the Intergovernmental Panel on Climate Change
reports, scientists didn't anticipate ice sheet loss in Antarctica,
Weaver said.
And the rate of those losses is accelerating, so that Greenland's ice
sheets are melting twice as fast now as they were just seven years
ago, increasing sea level rise.
Worldwide glaciers are shrinking three times faster than in the 1970s
and the average glacier has lost 25 feet of ice since 1997, said
Michael Zemp, a researcher at World Glacier Monitoring Service at the
University of Zurich.
"Glaciers are a good climate indicator," Zemp said.
"What we see is an accelerated loss of ice."
Also, permafrost � the frozen northern ground that oil pipelines are
built upon and which traps the potent greenhouse gas methane � is
thawing at an alarming rate, Burkett said.
Another new post-1997 impact of global warming has scientists very
concerned.
The oceans are getting more acidic because more of the carbon dioxide
in the air is being absorbed into the water.
That causes acidification, an issue that didn't even merit a name
until the past few years.
More acidic water harms coral, oysters and plankton and ultimately
threatens the ocean food chain, biologists say.
In 1997, "there was no interest in plants and animals" and how they
are hampered by climate change, said Stanford University biologist
Terry Root.
Now scientists are talking about which species can be saved from
extinction and which are goners.
The polar bear became the first species put on the federal list of
threatened species and the small rabbit-like American pika may be
joining it.
More than 37 million acres of Canadian and U.S. pine forests have been
damaged by beetles that don't die in warmer winters.
And in the U.S. West, the average number of acres burned per fire has
more than doubled.
The Colorado River reservoirs, major water suppliers for the U.S.
West, were nearly full in 1999, but by 2007 half the water was gone
after the region endured the worst multiyear drought in 100 years of
record-keeping.
Insurance losses and blackouts have soared and experts say global
warming is partly to blame.
The number of major U.S. weather-related blackouts from 2004-2008 were
more than seven times higher than from 1993-1997, said Evan Mills, a
staff scientist at the Lawrence Berkeley National Lab.
"The message on the science is that we know a lot more than we did in
1997 and it's all negative," said Eileen Claussen, president of the
Pew Center on Global Climate Change.
"Things are much worse than the models predicted."
From The Associated Press, 11/23/09:
http://news.yahoo.com/s/ap/sci_climate_09_post_kyoto
Warming's impacts sped up, worsened since Kyoto
By SETH BORENSTEIN, AP Science Writer
WASHINGTON �
Since the 1997 international accord to fight global warming, climate
change has worsened and accelerated � beyond some of the grimmest of
warnings made back then.
As the world has talked for a dozen years about what to do next, new
ship passages opened through the once frozen summer sea ice of the
Arctic.
In Greenland and Antarctica, ice sheets have lost trillions of tons of
ice.
Mountain glaciers in Europe, South America, Asia and Africa are
shrinking faster than before.
.......................................................................................................................
In 1997, global warming was an issue for climate scientists,
environmentalists and policy wonks.
Now biologists, lawyers, economists, engineers, insurance analysts,
risk managers, disaster professionals, commodity traders,
nutritionists, ethicists and even psychologists are working on global
warming.
"We've come from a time in 1997 where this was some abstract problem
working its way around scientific circles to now when the problem is
in everyone's face," said Andrew Weaver, a University of Victoria
climate scientist.
The changes in the last 12 years that have the scientists most alarmed
are happening in the Arctic with melting summer sea ice and around the
world with the loss of key land-based ice masses.
It's all happening far faster than predicted.
________________________________________________________
Harry
You are a waste of bandwidth
Meanwhile, the denialists, after their few scientists were unable to
impugn AGW theory in any way, are reduced to going through stolen personal
emails. lol
Whenever you see Seth Borenstein you know you are dealing with phoney
science.
Oh yeah, the wackjob who thought changing passwords after data theft was a
smoking gun. lol
And?
How fast is sea level rising?
•• Some say it is rising 1mm per annum.
However from day to day it can vary several inches,
Remember the "sea level" is the median between the
high and low tides which can vary with the velocities
and directions of the winds.
Effectively there is no sea level rises anywhere.
•• You must recognize that Seth Borenstein, as an employee of
Associated Press, is only editing press releases and press
conferences.
> Meanwhile on climateaudit.org:
>
> by Steve McIntyre on November 21st, 2009
>
> The performance of the CA server is ridiculously slow. Last March, I
> considered moving to a wordpress account, but was persuaded that there were so
> many embedded links to CA and to CA graphics to move. Thus, we continued on
> using our own server, which has now collapsed under a load much more modest
> than WUWT volume, which is effortlessly handled by Wordpress.
>
> LOL
> Seems there is more interest in CA than in RC :-)
Sorry, the computer didn't belong to them. Therefore the emails aren't
private when stored there.
Good try trying to deflect the obvious!
lol.
GO suck 3 trillion bucks out of your ass..
cap and trade neads to die