PDA

View Full Version : Ice Melting Less Than Thought!!!



Sev
02-08-2012, 05:36 PM
How can this be??????
Nothing like being off 30%. I would suggest they are probably of more than that.

http://www.usnews.com/news/articles/2012/02/08/earths-polar-ice-melting-less-than-thought

Better technology yields better data. The bad news is the extra water from 2003-2010 would fill Lake Erie eight times

By Jason Koebler
February 8, 2012 RSS Feed Print

Nearly 230 billion tons of ice is melting into the ocean from glaciers, ice caps, and mountaintops annually—which is actually less than previous estimates, according to new research by scientists at the University of Colorado, Boulder.

If the amount of ice lost between 2003 and 2010 covered the United States, the whole country would be under one-and-a-half feet of water, or it'd fill Lake Erie eight times, researchers say. Ocean levels worldwide are rising about six hundredths of an inch per year, according to researcher John Wahr.

While vast quantities of ice melting into the ocean is not exactly good news, Wahr says, according to his team's estimates, about 30 percent less ice is melting than previously thought.

The team used data from the Gravity Recovery and Climate Experiment satellite, which was launched as a joint project between NASA and Germany in 2002. The GRACE satellite measures gravity, which is related to mass, in 20 distinct regions worldwide. Wahr says that gives the team more accurate estimates, because previous teams had to measure ice loss at "a few easily accessible glaciers" and then extrapolate it to the 200,000 glaciers worldwide.

"It's tough to get an estimate [with previous methods]," he says.

With GRACE, the team can measure wide swaths of the earth, giving them a more complete picture. "It was time to do a complete global inventory," he says. Although the team used eight years of GRACE's data, Wahr says it's important to realize that melting patterns are hard to predict.

"Even with an eight-year estimate, it's not clear how far into the future you can project," he says. "A lot of people want to predict into the end of the century, but I think it's too dangerous to do that … We don't have enough info to know what'll happen. There's some ebb and flow to these things."

Soflasnapper
02-09-2012, 10:12 PM
I presume that at that altitude, and likely temperature, ice up there doesn't so much melt as sublimate (going directly from solid form to gas, without the liquid intermediary step).

cushioncrawler
02-10-2012, 03:17 AM
I dont know much about sublimation -- but melting of ice haz more to do with the temperature 500years and 1000years and 2000years ago than with the temp today.
mac.

LWW
02-11-2012, 06:51 AM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Soflasnapper</div><div class="ubbcode-body">I presume that at that altitude, and likely temperature, ice up there doesn't so much melt as sublimate (going directly from solid form to gas, without the liquid intermediary step).

</div></div>

We are on an 11,000 year move out of the ice age, that we are still in, and you are just now figuring out that ice might be melting.

<span style='font-size: 26pt'>BRILLIANT</span>

Sev
02-13-2012, 08:52 AM
Melting happens.

LWW
02-13-2012, 01:43 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sev</div><div class="ubbcode-body">Melting happens. </div></div>

Ice melts as an ice age ends?

WHOODATHUNKITT?