Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

NASA Study: Mass Gains of Antarctic Ice Sheet Greater than Losses

RATE THIS! +35
Posted in Science on 2nd Nov, 2015 12:27 PM by AlexMuller

A NASA study says that an increase in Antarctic snow accumulation that began 10,000 years ago is adding enough ice to the continent to outweigh the increased losses from its thinning glaciers. The research challenges the conclusions of other studies which says that Antarctica is overall losing land ice.

 
According to the new analysis of satellite data, the Antarctic ice sheet showed a net gain of 112 billion tons of ice a year from 1992 to 2001. That net gain slowed   to 82 billion tons of ice per year between 2003 and 2008.
 
“We’re essentially in agreement with other studies that show an increase in ice discharge in the Antarctic Peninsula and the Thwaites and Pine Island region of West Antarctica,” said Jay Zwally, a glaciologist with NASA Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the study, which was published on Oct. 30 in the Journal of Glaciology.
 
“Our main disagreement is for East Antarctica and the interior of West Antarctica, there, we see an ice gain that exceeds the losses in the other areas.”  Zwally added that his team “measured small height changes over large areas, as well as the large changes observed over smaller areas.”
 
Scientists calculate how much the ice sheet is growing or shrinking from the changes in surface height that are measured by the satellite altimeters. In locations where the amount of new snowfall accumulating on an ice sheet is not equal to the ice flow downward and outward to the ocean, the surface height changes and the ice-sheet mass grows or shrinks.
 
But it might only take a few decades for Antarctica’s growth to reverse, according to Zwally. “If the losses of the Antarctic Peninsula and parts of West Antarctica continue to increase at the same rate they’ve been increasing for the last two decades, the losses will catch up with the long-term gain in East Antarctica in 20 or 30 years, I don’t think there will be enough snowfall increase to offset these losses.”

Tags: iceAntacraticaclimate changesnowweatherNASAenvironment

Read original article » Back to category

Comments

Author: Guest
Posted: 2015-11-03
+1
It is very important to have valid data and precise measurements for mass of Antarctic ice and not just now but over time- it is critical to establish trends and the causes of change Reply


 

Recent headlines

  • Posted in Science on 2017-03-22 07:41:30
    'Smallsats' open up new planetary frontier..read more
    Posted in Science on 2017-03-22 07:36:45
    Trump signs NASA funding bill, sets goal of human on Mars..read more
    Posted in Medicine on 2017-03-22 07:30:04
    A Groundbreaking Stem Cell Treatment Just Prevented a.....read more
    Posted in Hardware on 2017-03-21 18:16:58
    Improved materials for interfacing neural tissue with.....read more
    Posted in Science on 2017-03-21 18:11:10
    SpaceX to make history by re-flying orbital rocket..read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me