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Science Names Research on Ice Sheet Melting One of Year’s Top Breakthroughs

22 December 2006

The journal Science has named research on the accelerating melting of the great ice sheets as one of the runner-ups to the top scientific breakthrough of the year. Science heralded the proof of the Poincaré conjecture as the top breakthrough of the year (if not the decade).

The journal noted that different teams of glaciologists confirmed via techniques and measurements that span decades that the world’s two great ice sheets—covering Greenland and Antarctica—are losing ice to the ocean at an accelerating pace.

The future of the ice sheets is still rife with uncertainty, but if the unexpectedly rapid shrinkage continues, low-lying coasts around the world—including New Orleans, South Florida, and much of Bangladesh—could face inundation within a couple of centuries rather than millennia.

Different techniques and even different analyses of the same data disagree about just how much ice volume is changing. All of them, however, now show that both Greenland and Antarctica have been losing ice over the past 5 to 10 years. In the north, Greenland is shedding at least 100 gigatons each year. In the south, the figure is less certain but lies in the range of tens of gigatons per year or more.

Current ice sheet losses aren’t raising sea level faster than 0.1 meter per century, but researchers fear that the rate could rise to a meter per century or more in the near future.

...it turns out the ice isn’t just melting faster, it is moving faster. Radar mapping shows that in recent years, glaciers carrying ice away from the sheets have sped up by as much as 100%. In West Antarctica, warming ocean waters seem to have attacked the floating tongues of ice that hold back the ice sheet’s outlet glaciers. Around southern Greenland, something else seems to be quickening the pace of outlet glaciers...

The other breakthroughs named as runner-up to the proof of the Poincaré conjecture are:

  • The sequencing and analysis of fossil DNA;
  • The discovery of the fossil fish Tiktaalik;
  • The development and demonstration of the first “invisibility” cloak;
  • Progress against macular degeneration;
  • Advances in understanding biodiversity;
  • The development and application of new microscopy techniques that get around the “diffraction limit”;
  • New research on the mechanisms of memory; and
  • The discovery of Piwi-interacting RNAs (piRNAs).

December 22, 2006 in Climate Change | Permalink | Comments (34) | TrackBack (0)

Comments

Oops! That should be "Andrey's comment" in above post.

Posted by: Sand-insert-Head | December 26, 2006 at 02:49 PM

Sand:

It is simple. IPCC is governing body. All researches are made by scientists from different universities around the world. 90% of researches are honest and serious works, but results of these researches are terribly twisted and misinterpreted in IPCC summaries. Further these summaries are overblown by hysterical media, and serve as base for totally irrelevant and damaging policy making. It costs a lot of money and lead to a lot of damage to economies, society, and climate science too.

CO2 site provides way more detailed and correct summaries of these researches. Your role is read, check references, and draw your own conclusions. Apparently, you prefer not to, because you do not like what these researches are pointing to.

By the way, looking into funding sources is not how science decides what theory is right and what is wrong. It is instrument of strictly junk science and political persecution.

Posted by: Andrey | December 27, 2006 at 12:30 AM

wake up , look around you , what is happening at the moment is not normal, by anyones book ! The world is changing and changing fast , and I am afraid to say that we are responsible , and all the science in the the world is not going to make any difference unless we change the way we live . Walk to the shops , let your children walk to school, live nearer to the workplace , insulate your house , take fewer flights , chuck out those old inefficent appliences that you have been nursing along for years now , and replace them with newer types , change the light bulbs in your house, use the money earmarked for that new car to buy solar panels for your home , and maybe plant a few trees . All these things are achivable by the individual and combined go a long way , governments and big buisness are not going help us out of this mess , it is up to us as joe public to change !
And as for you so called scientists you will still be argueing about your figures and wether or not the right model has been implmented when the water is lapping around your ankles !

Posted by: andrichrose | December 27, 2006 at 02:22 PM


Amen.

Posted by: Andrey | December 27, 2006 at 08:16 PM

The problem is most of the current plans are more about money and funding and keeping people feeling safe and thus where they are and not where wqe are then it is about actaulysaving anything.

We are about to increase agriculter by a factor of maybe 2 to fuel biofuels.. and as big oil tries to say..co2 amye be an issue but... we likely will regret this day. It is very likely the new agg land will make things worse MUCH worse.

And if kyoto keeps people from panicing and leaving islands and lowlands.. it is evil. Because nothing kyoto does will stop the destruction of those places or even slow it down 1 minute. AND THEY KNOW IT.

Millions maybe billions are counting on a plan designed at its heart to keep them wherethey are till they die. And THAT is the trueth.

Posted by: wintermane | December 28, 2006 at 08:01 AM

"It's widely documented that climate change is causing the Greenland and Antarctic ice sheets to shrink. Air temperatures in many parts of the polar regions have increased and waters that surround parts of the ice sheets have warmed up. What most do not know is that until just six years ago, we had no real way of measuring whether the ice sheets were shrinking or growing, or at what rate.

With increases in the number of ways researchers can now measure changes in the landscape and rate of change of the ice sheets, have also come some variations in scientific results that some may find confusing. However, a closer look tells a fairly consistent story.

In Antarctica, these observations tell us that the West Antarctic ice sheet is currently shrinking substantially, and has been for the last decade. They also tell a story of a second much larger ice sheet in East Antarctica that has been growing slowly. The net result in Antarctica is that the ice sheet as a whole has been shrinking, contributing to rising sea levels, and probably much more so in recent years.

"We did not appreciate in the past how the changes in ice sheets respond so quickly to changes in climate. The story these measurement techniques are all telling is that the ice sheets are shrinking more than they were 10 years ago," said Abdalati. "The borders of the ice sheets are melting in waters that are warming."

December 11, 2006, NASA, Earth Sciences Division: http://earthsciences.gsfc.nasa.gov/index.pl?id=2811&isa=Newsitem&op=show

Posted by: Andy | January 04, 2007 at 07:08 PM

I got to your site by asking Google by how much sea levels are likely to rise if all the ice caps melt - and I understand the answer is about 70 metres - and also by asking when all the ice caps are likely to melt. What is the range of scientific answers to the second question, please? - the end of this century seems to be the most alarmist, although not necessarily most scientific, answer. Is that at all likely?

Posted by: Dane Clouston | January 08, 2007 at 09:20 AM

The problem isn't really the global environment but the access to easy oil that will start to decline in a couple of years. It's sad that we cannot focus on the real issues and instead try to cut back our oil consumption and hopefully delay the inevitable decline until our economy is less depended on it.

Now one would think that the actions suggested by global warming alarmists would help to prevent a future oil crisis. Problem is that we will need all those other sources of energy such as natural gas, coal etc, when the final oil decline occurs.
Taking away every source of co2 isn't really a smart thing to do.
And now that Al Gore loonie is all over us in europe banging his global warming bible all over the place....

Posted by: Peter | January 12, 2007 at 01:17 AM

"Different techniques and even different analyses of the same data disagree about just how much ice volume is changing. All of them, however, now show that both Greenland and Antarctica have been losing ice over the past 5 to 10 years. In the north, Greenland is shedding at least 100 gigatons each year. In the south, the figure is less certain but lies in the range of tens of gigatons per year or more."* *from above article
---
Scientists have discovered what they think may be the reason why Greenland 's ice is melting: a thin spot in Earth's crust is enabling underground magma to heat the ice.
They have found at least one “hotspot” in the northeast corner of Greenland -- just below a site where an ice stream was recently discovered...The researchers don't yet know how warm the hotspot is. But if it is warm enough to melt the ice above it even a little, it could be lubricating the base of the ice sheet and enabling the ice to slide more rapidly out to sea...Once they finish searching the rest of Greenland for other hotspots, they hope to turn their attention to Antarctica.
--Center for Remote Sensing of Ice Sheets , American Geophysical Union
^This research was funded by the National Science Foundation.
^full article: http://researchnews.osu.edu/archive/hotgreen.htm

----Extra Sunshine Blamed for Part of Arctic Meltdown--National Center for Atmospheric Research
.". a decrease in cloud cover, scientists said at a meeting of the American Geophysical Union, which would have allowed more sunlight to penetrate Earth’s atmosphere and warm the Arctic ocean waters.
New data from NASA satellites observing the western Arctic, where most of the ice loss occurred, showed a 16 percent decrease in cloud coverage this summer compared to 2006."Our data show that clearer skies this summer allowed more of the sun’s energy to melt the vulnerably thin sea ice and heat the ocean surface."
http://www.livescience.com/environment/071212-arctic-clouds.html

Posted by: York Unfewst | December 27, 2007 at 01:13 PM

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