Sea Ice Ends Year at Same Level as 1979

Space, the environment, new discoveries and new uses for old ones
Post Reply
User avatar
SLK230
Posts: 9070
Joined: Sun Oct 15, 2006 4:16 pm

Sea Ice Ends Year at Same Level as 1979

Post by SLK230 » Mon Jan 05, 2009 2:31 pm

Sea Ice Ends Year at Same Level as 1979Michael Asher (Blog) - January 1, 2009 11:31 AM

http://www.dailytech.com/Sea+Ice+Ends+Y ... e13834.htm




Thirty years of sea ice data. The record begins at 1979, the year satellite observations began (Source: Arctic Research Center, University of Illinois)
Rapid growth spurt leaves amount of ice at levels seen 29 years ago.


Thanks to a rapid rebound in recent months, global sea ice levels now equal those seen 29 years ago, when the year 1979 also drew to a close.

Ice levels had been tracking lower throughout much of 2008, but rapidly recovered in the last quarter. In fact, the rate of increase from September onward is the fastest rate of change on record, either upwards or downwards.

The data is being reported by the University of Illinois's Arctic Climate Research Center, and is derived from satellite observations of the Northern and Southern hemisphere polar regions.

Each year, millions of square kilometers of sea ice melt and refreeze. However, the mean ice anomaly -- defined as the seasonally-adjusted difference between the current value and the average from 1979-2000, varies much more slowly. That anomaly now stands at just under zero, a value identical to one recorded at the end of 1979, the year satellite record-keeping began.

Sea ice is floating and, unlike the massive ice sheets anchored to bedrock in Greenland and Antarctica, doesn't affect ocean levels. However, due to its transient nature, sea ice responds much faster to changes in temperature or precipitation and is therefore a useful barometer of changing conditions.

Earlier this year, predictions were rife that the North Pole could melt entirely in 2008. Instead, the Arctic ice saw a substantial recovery. Bill Chapman, a researcher with the UIUC's Arctic Center, tells DailyTech this was due in part to colder temperatures in the region. Chapman says wind patterns have also been weaker this year. Strong winds can slow ice formation as well as forcing ice into warmer waters where it will melt.

Why were predictions so wrong? Researchers had expected the newer sea ice, which is thinner, to be less resilient and melt easier. Instead, the thinner ice had less snow cover to insulate it from the bitterly cold air, and therefore grew much faster than expected, according to the National Snow and Ice Data Center.

In May, concerns over disappearing sea ice led the U.S. to officially list the polar bear a threatened species, over objections from experts who claimed the animal's numbers were increasing.
Thought for the day:
We are always hearing about how Social Security is going to run out of money.
How come we never hear about Welfare running out of money?

User avatar
kramer
Posts: 8852
Joined: Mon Nov 19, 2007 8:38 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by kramer » Mon Jan 05, 2009 3:04 pm

So lets see, we've had at least a decade of global warming scare and at least 5 years of polar ice melt fear stories and right now the polar ice caps are where they were in late '79. No pun intended but AGW might be going down in flames...


Here's the link to the source of the graph:
http://arctic.atmos.uiuc.edu/cryosphere/

Red
Posts: 17717
Joined: Wed Nov 28, 2007 4:33 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by Red » Mon Jan 05, 2009 3:13 pm

Global Warming is out and Climate Change is in. That way, we Americans can be blamed for whatever comes our way. YOU are the reason why it's snows in the Himalayans.

User avatar
SLK230
Posts: 9070
Joined: Sun Oct 15, 2006 4:16 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by SLK230 » Mon Jan 05, 2009 3:19 pm

kramer wrote:So lets see, we've had at least a decade of global warming scare and at least 5 years of polar ice melt fear stories and right now the polar ice caps are where they were in late '79. No pun intended but AGW might be going down in flames...


Here's the link to the source of the graph:
http://arctic.atmos.uiuc.edu/cryosphere/

I agree with you but doubt the liberals will ever accept the truth as there is to much money to be made in perpetuating the lie. When the world doesn't fry they will take credit for the fix.
It's the perfect crime, cure a problem that never really existed.
Thought for the day:
We are always hearing about how Social Security is going to run out of money.
How come we never hear about Welfare running out of money?

User avatar
kramer
Posts: 8852
Joined: Mon Nov 19, 2007 8:38 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by kramer » Mon Jan 05, 2009 3:27 pm

SLK230 wrote:

I agree with you but doubt the liberals will ever accept the truth as there is to much money to be made in perpetuating the lie. When the world doesn't fry they will take credit for the fix.
It's the perfect crime, cure a problem that never really existed.

It's also the perfect vehicle to even out the economic disparities of the world. Based on what I'm reading from prominent left wing NGO's, I see AGW as a means to help build infrastructure and power plants in developing nations so that we can ship more of our jobs to those countries.

User avatar
GOODave
Posts: 26392
Joined: Sun Oct 15, 2006 6:21 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by GOODave » Mon Jan 05, 2009 5:07 pm

SLK230 wrote: Sea Ice Ends Year at Same Level as 1979Michael Asher (Blog) - January 1, 2009 11:31 AM

http://www.dailytech.com/Sea+Ice+Ends+Y ... e13834.htm




Thirty years of sea ice data. The record begins at 1979, the year satellite observations began (Source: Arctic Research Center, University of Illinois)
Rapid growth spurt leaves amount of ice at levels seen 29 years ago.


Thanks to a rapid rebound in recent months, global sea ice levels now equal those seen 29 years ago, when the year 1979 also drew to a close.

Ice levels had been tracking lower throughout much of 2008, but rapidly recovered in the last quarter. In fact, the rate of increase from September onward is the fastest rate of change on record, either upwards or downwards.

The data is being reported by the University of Illinois's Arctic Climate Research Center, and is derived from satellite observations of the Northern and Southern hemisphere polar regions.

Each year, millions of square kilometers of sea ice melt and refreeze. However, the mean ice anomaly -- defined as the seasonally-adjusted difference between the current value and the average from 1979-2000, varies much more slowly. That anomaly now stands at just under zero, a value identical to one recorded at the end of 1979, the year satellite record-keeping began.

Sea ice is floating and, unlike the massive ice sheets anchored to bedrock in Greenland and Antarctica, doesn't affect ocean levels. However, due to its transient nature, sea ice responds much faster to changes in temperature or precipitation and is therefore a useful barometer of changing conditions.

Earlier this year, predictions were rife that the North Pole could melt entirely in 2008. Instead, the Arctic ice saw a substantial recovery. Bill Chapman, a researcher with the UIUC's Arctic Center, tells DailyTech this was due in part to colder temperatures in the region. Chapman says wind patterns have also been weaker this year. Strong winds can slow ice formation as well as forcing ice into warmer waters where it will melt.

Why were predictions so wrong? Researchers had expected the newer sea ice, which is thinner, to be less resilient and melt easier. Instead, the thinner ice had less snow cover to insulate it from the bitterly cold air, and therefore grew much faster than expected, according to the National Snow and Ice Data Center.

In May, concerns over disappearing sea ice led the U.S. to officially list the polar bear a threatened species, over objections from experts who claimed the animal's numbers were increasing.
Ahem ... leave it to those braniac Illinoisans to discover something like this.

User avatar
Parrotpaul
Posts: 33550
Joined: Sun Oct 15, 2006 2:14 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by Parrotpaul » Mon Jan 05, 2009 5:09 pm

GOODave wrote: Ahem ... leave it to those braniac Illinoisans to discover something like this.
I thought Illinoisans were all crooks, humbugs, and toadies....now you have me confused.
"I think I may say that of all the men we meet with, nine parts of ten are what they are, good or evil, useful or not, by their education." John Locke

User avatar
GOODave
Posts: 26392
Joined: Sun Oct 15, 2006 6:21 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by GOODave » Mon Jan 05, 2009 6:25 pm

Parrotpaul wrote:I thought Illinoisans were all crooks, humbugs, and toadies....now you have me confused.
C'mon Paul: I shouldn't have to keep score for you. It's only the POLITICIANS who are crooks, humbugs, and toadies.

Us normal people are, well, NOT Chicagoans and are mostly just normal people. Kinda like you, only different.

User avatar
Parrotpaul
Posts: 33550
Joined: Sun Oct 15, 2006 2:14 pm

Re: Sea Ice Ends Year at Same Level as 1979

Post by Parrotpaul » Mon Jan 05, 2009 6:33 pm

GOODave wrote:
C'mon Paul: I shouldn't have to keep score for you. It's only the POLITICIANS who are crooks, humbugs, and toadies.

Us normal people are, well, NOT Chicagoans and are mostly just normal people. Kinda like you, only different.
Dave, you have finally passed the toon avatar stage of your posting career. It is good.
"I think I may say that of all the men we meet with, nine parts of ten are what they are, good or evil, useful or not, by their education." John Locke

Post Reply