Satellites check in on the North Pole

NSIDC

This visualization shows Saturday's extent of Arctic sea ice, as charted by the National Snow and Ice Data Center. The readings have been overlaid on NASA imagery of the Northern Hemisphere. The orange line indicates the median extent of sea ice on the same calendar date for the 1979-2000 time period.



If Santa Claus is getting the feeling that someone's looking over his shoulder as he rushes to make his Christmas deadline, he's not wrong: A succession of satellites is monitoring his North Pole workshop and the rest of the Arctic on a daily basis. Based on the satellite readings, the long-term outlook is worrisome, for Santa and the rest of us as well.


This image shows the extent of Arctic sea ice, based on the latest microwave data from the Pentagon's DMSP-F17 satellite. Those readings are compared against the median extent for the same date over the 1979-2000 time frame. That median extent is indicated on the photo by the orange lines.

Earlier this month, the National Oceanic and Atmospheric Administration said in its annual "Arctic Report Card" that glaciers and sea ice retreated at a record rate this year, and that sea level rise has accelerated in the region. What's more, those changes are affecting ecosystems in the far north — spurring marine phytoplankton growth while putting extra pressure on land species such as lemmings and the Arctic fox.

There's also a spillover effect on ecosystems farther south. "What happens in the Arctic doesn't always stay in the Arctic," NOAA Administrator Jane Lubchenco said. "We're seeing Arctic changes in the ocean and the atmosphere that affect weather patterns elsewhere."

Keep tabs on those changes by checking in with NBC News' environmental coverage. For more visualizations of Arctic as well as Antarctic ice data, check out this reference page at the "Watts Up With That" blog. You can also scan NASA's report about this summer's retreat of the Arctic's ice cover. And for something completely different, here are 10 things you may not have known about the North Pole.

Today's visualization of the North Pole's ice is the latest offering from the Cosmic Log Space Advent Calendar, which features daily images of Earth from space through Christmas. Try these other visual goodies from the calendar:

Correction for 9:15 p.m. ET: I originally referred to the median extent of Arctic sea ice, but changed that reference to use "average" instead — which was an ill-advised move. Generally speaking, an "average" value refers to the mean, which can be quite different from the median. Here's an explanation from Purplemath that lays out the difference. Thanks to commenters for pointing out the distinction. (I also fixed a typo referring to "sea level rice.")


Alan Boyle is NBCNews.com's science editor. Connect with the Cosmic Log community by "liking" the log's Facebook page, following @b0yle on Twitter and adding the Cosmic Log page to your Google+ presence. To keep up with Cosmic Log as well as NBCNews.com's other science and space news coverage, sign up for the Tech & Science newsletter, delivered via email. You can also check out "The Case for Pluto," my book about dwarf planets and the search for new worlds.

 

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There are no penquins in the arctic. And RADAR is not microwaves. It's radio waves.

  • 2 votes
Reply#2 - Sun Dec 23, 2012 6:46 PM EST

Mo, you need to read the article. The second paragraph starts with the statement "This image shows the extent of Arctic sea ice, based on the latest microwave data from the Pentagon's DMSP-F17 satellite." Did you see where it says "microwave data"?

  • 2 votes
#2.1 - Sun Dec 23, 2012 9:02 PM EST

errrh.......It says "microwave data"....just saying......RADAR doesn't do well with median change......May cause problems from orbit.......Microwave can do two things better.......vacuum has no effect (RADAR doesn't do well in orbit....ie vacuum)and it is less sensitive to minor dielectric changes.......

  • 6 votes
#2.2 - Sun Dec 23, 2012 9:08 PM EST

Peter - get a life and a sense of humor. It is a festive time of year after all.

HOWEVER, technically microwaves are a subset of the radio spectrum.

    #2.3 - Sun Dec 23, 2012 11:32 PM EST

    ID123 - No, microwaves and Radio waves are part of the ELECTROMAGNETIC spectrum...

    • 1 vote
    #2.4 - Mon Dec 24, 2012 1:49 AM EST

    Well anyway, I guess it not perverted to have MAN - WOMAN sex . Right?

      #2.5 - Mon Dec 24, 2012 2:36 AM EST
      Reply
        Reply#3 - Sun Dec 23, 2012 6:48 PM EST

        Who writes these articles? The average does NOT mean the same thing as the median.

        For example, here are some numbers: 1, 3, 3, 3, 20
        The average of these five numbers is 6, but the median is only 3. You can't oversimplify science for the public if you do it in a way that is wrong. I see people do this all the time and the scientists get blamed for poor communication. However, it's really the journalists that didn't take any real science classes in college that are causing the majority of problems like this.

        Please read the figure caption and have a science editor read your work if you don't understand the meaning of what you're writing about.

        • 6 votes
        Reply#4 - Sun Dec 23, 2012 6:48 PM EST

        OK, gotcha, median vs. mean... I'll change it back to median. Thanks

        • 3 votes
        #4.1 - Sun Dec 23, 2012 9:10 PM EST
        Comment author avatarCarrington Birnievia Facebook

        This is more of a question than a comment. I've been watching cloud patterns on google earth (weather) since march in an attempt to understand global weather patterns. (I compare the cloud pattern to jet-stream data from the california weather server and various surface product maps of DAS at University of Illinois) For the first time , today, there is complete coverage of the north pole region. Is there a new sattelite on-line? I had assumed that the blank space in the KML files was due to some technical limitation.

        • 1 vote
        #4.2 - Mon Dec 24, 2012 1:08 AM EST

        Carrington, are you talking about this picture? This is actually based on microwave readings that have been converted into a visualization of sea ice extent. So this particular satellite is not the sort of thing that can feed imagery to Google Earth. I might have to leave it to more knowledgeable satellite-watchers to explain the blank space in polar imagery. (It may also have something to do with the map projection method used for KML files. I remember that map projection was an issue for some of these imagery products.)

        • 1 vote
        #4.3 - Mon Dec 24, 2012 2:49 AM EST
        Comment author avatarCarrington Birnievia Facebook

        Thank you alan, I take your response to mean that you have not heard of any sattelite being repositioned. When you refer to "this picture" I started looking for a picture or a link, and found none. No matter, my computer is old , it's operator older, and my competence with it questionable. After that one bref period, the "not covered by sattelite"surrounding the north pole returnedfile got data not usually sent to google earth. Triangle of coverage originated in asia,(the apex) and widened to the north , covering the entire arctic ocean area, and I had high hopes. I often get odd images as I have the opacity set at less than maximum , and can often see through the composite image to an under layer with source notation. I know they do move the sattelites given sufficient cause. I was eagle eyed as sandy formed off the yucatan, and followed it every few hours in its journey north. At some point the coverage got much better, and the time stamp much closer to current.

        • 1 vote
        #4.4 - Mon Dec 24, 2012 8:14 AM EST
        Comment author avatarCarrington Birnievia Facebook

        I was reading again looking to see if alan had responded to my question when I saw someone speculating that some man made micro-wave device might be melting the polar ice caps. I've been chuckling to myself ever since. A microwave at house current might be able to boil the water in his eyeball in a few minutes. With a huge power source, more could be accomplished. With the entire planet's electrical output, and a micro-wave transmitter capable of handling the power, the arctic ice cap --might-- be melted. Of course, we'd all have to go without electricity for the 3 months it might take

        • 1 vote
        #4.5 - Tue Dec 25, 2012 8:38 AM EST

        Thanks for making the change Alan. My science professor husband wrote the comment and the median/mean/average mix up is his biggest pet peeve! I asked him not to post and to get his own account if he feels the need to be snarky know it all :)

        • 1 vote
        #4.6 - Wed Dec 26, 2012 5:59 PM EST
        Reply

        Ok, now tell us what we can do about it! What can be done? What steps are currently underway, etc....

        Don't just alarm us with no action plan in place to report.

        • 2 votes
        Reply#6 - Sun Dec 23, 2012 8:35 PM EST

        Actually, changes in the Arctic don't "spill over". They directly impact the jet stream which, over the past decade, has slowed and become much more erratic. As a consequence, weather patterns over the northern hemisphere are changing in dramatic ways. Last summer, the Arctic lost, just under, 84% of it's ice in 168 days. The Arctic is warming much more than anywhere else resulting in the permafrost melting all over. I lived in Alaska for many years and the consequences of the melting was obvious a decade ago. As a result of the tundra melting, methane is being released in substantial amounts. In addition, large areas of methane are bubbling to the surface of the ocean in the Arctic. Unlike the lower 48, Alaskans take climate change seriously as the farther north you go, the more massive the changes. I agree with Betsy 1056, journalists have minimal to no knowledge of science and do not display any interest in learning.

        • 2 votes
        Reply#7 - Sun Dec 23, 2012 8:37 PM EST

        I do have an interest in learning, at least, and I hope I display that. I'm also familiar with mean/median/mode in terms of statistics, but made a misstep in the interest of readability. With regard to "spill over," that was a reference to how changes in the Arctic ecosystem can affect other, lower-latitude ecosystems. If you follow the links, you'll find references from Jane Lubchenco and Martin Jeffries relating to the effects of Arctic changes on migratory birds and foxes, among other species. Sorry about the error, and I hope I can change your opinion of journalists just a bit.

        • 4 votes
        #7.1 - Sun Dec 23, 2012 9:24 PM EST

        eugene

        Unfortunately sister Sarah Palin doesn't take climate change seriously like the rest of Alaska, but of course she bought a million dollar house in Arizona I believe with the money from Fox noise

        • 3 votes
        #7.2 - Sun Dec 23, 2012 9:42 PM EST

        Alan, incredibly enough, you just did.

        It's refreshing to find a journalist that is interested in the facts and not just the talking points.

        :)

        • 3 votes
        #7.3 - Sun Dec 23, 2012 10:36 PM EST

        I am glad when people have an interest in learning. Because of the crisis, I have been looking at images of the arctic almost daily for the past few years. Our government and other governments do not care. All they want to do is encourage shipping over the arctic oceans for a few months, and increase drilling, which will further damage the area.

        Because this situation is so important to the continuation of this planet, much more than asteroid impacts which might take out a city, but not the whole world, this should be covered with the greatest possible knowledge and expertise, not covered by people who know nothing about it.

        America is so gun-crazy that we have a real crisis in the world, and we can't even see it; we only see our guns. Or maybe a self-inflicted "fiscal cliff" that has been driven by greed on the part of billionaires... the same billionaires who deny climate change on one side of their mouth while increasing shipping in the arctic on the other side of their mouth.

        I want the media and the government to take climate change much more seriously.

        • 1 vote
        #7.4 - Sun Dec 23, 2012 11:08 PM EST

        Elizabeth - Take off the tin hat and come back to reality. The fact is that global warming has halted. We are also at the peak of the procession of Earth's axis - remember the Mayan calendar? When it is another ice age in 13,000 more years, those folks will be asking for more greenhouse gasses.

        Shipping across the Arctic - that must be the latest conspiracy theory. You should get Al Gore on that one right away - but I forgot, he is one of those pesky billionaires. Guess how he made his money?

        And guns - they are what made you free and keep you free.

        • 1 vote
        #7.5 - Sun Dec 23, 2012 11:40 PM EST

        Yes, no one in the lower 48 takes climate change seriously, while all Alaskans do. Brilliant thinker you are, Eugene. Tell us more about how special Alaskans are, and how bad the lower 48 is. Cripes I get sick of this crap.

          #7.6 - Mon Dec 24, 2012 12:29 AM EST

          It's not climate change that is man made, we are coming out of an ice age. Look at the millions of years of facts:

          http://worldview3.50webs.com/6globalwarming.html

          The majority of our earth's history has had average temps around the 70's.

            #7.7 - Mon Dec 24, 2012 1:58 AM EST
            Reply

            Is this like the other reports we heard about? Why is the north pole ice cap getting small. Maybe for the same reason we don't have glaciers down in the middle of the U.S. The ice age ended and it all still melting. That's my scientific assumption. Do I get grant money now?

            • 5 votes
            Reply#8 - Sun Dec 23, 2012 8:40 PM EST

            Only if you propose to do something with the money, besides being smarmy in public.

            • 4 votes
            #8.1 - Sun Dec 23, 2012 9:50 PM EST

            Truth hurst huh?

            • 1 vote
            #8.2 - Sun Dec 23, 2012 11:41 PM EST
            Reply

            And the first Microwaves were called Radar Ranges Mo_Pho

              Reply#9 - Sun Dec 23, 2012 8:47 PM EST

              Who wrote this article (some Boyle)? Why worrysome? The white frost is pretty much in line with the orange line drawn, haphazardly, by some bureaucrat in the government just to prove a point. the winter big freeze does not accur in a simetrical way every year. Last year's "orange boundary" is not necessarily this year's, Capicci? P.D. I do not have a PhD in Science, I'm just sayin'

                Reply#10 - Sun Dec 23, 2012 8:50 PM EST

                Yes, I'm the "some Boyle" who wrote this article. I agree that you can't reach a firm conclusion on the basis of one year, but over a longer interval, the satellite readings have contributed to the worries as expressed in the "Arctic report card."

                I should have linked to the full report ... and so I'll add this link to the story:

                http://www.arctic.noaa.gov/reportcard/

                • 2 votes
                #10.1 - Sun Dec 23, 2012 9:27 PM EST
                Reply

                I am so busy wringing my hands with worry over those polar bears. I am going to sack up a couple bags of ice and haul them up there to help out. I cannot, I just cannot sit and do nothing with the future of polar bears so bleak. Giving up my Christmas for the bears. I am leaving now.

                • 1 vote
                Reply#11 - Sun Dec 23, 2012 8:51 PM EST

                Sea Rice is accelerating? No one needs to go hungry anymore.

                • 1 vote
                Reply#12 - Sun Dec 23, 2012 9:03 PM EST

                E.I.E.

                  Reply#13 - Sun Dec 23, 2012 9:06 PM EST

                  I.O.

                  • 1 vote
                  #13.1 - Sun Dec 23, 2012 9:55 PM EST
                  Reply

                  Must be all that "global warming" that we keep hearing about, even though it has been proven wrong. The earth has gone through cycles of temperature for ever, why should that stop now that we want it to?

                  • 2 votes
                  Reply#14 - Sun Dec 23, 2012 9:06 PM EST

                  Because it's happening much faster than is typical, and millions of people live in low-lying coastal areas, and... well, and some dopes like you are just dumb as a box of rocks. Thanks for playing!

                  • 6 votes
                  #14.1 - Sun Dec 23, 2012 9:52 PM EST

                  bcmech, where the hell did you hear that global warming has been proven wrong? That's perhaps the most inaccurate statement I've heard in 2012, with the exception of anything that came out of Mitt Romney's mouth of course. The fact is that 97% of the world's scientists, from all disciplines and all countries agree that global warming is in fact true. That's 97% that agree that it's happening. How did you get that it has been proven wrong from that?

                  Let me guess, some conservative politician (perhaps the infamous liar himself, Romney) told you in some stump speech that it wasn't true because conservatives simply don't believe in it right? And you went for it because it came from a conservative right, because it was what you wanted to hear? That's like saying that the Bible is true because the Bible says it's true; it doesn't prove a damned thing.

                  That's the problem with conservatives these days. It doesn't matter what the facts are; if they don't say what the GOP wants to hear then they simply don't believe them. Deny them long enough and they'll go away right. WRONG!

                  Global warming, (I prefer the term climate change so all you ignorant delusional red-neck hillbillies can't wait for a cold day and say "whurs yer global wurming now huh"), is very real. The only debate left is what is causing it. As it happens the same number of scientists also believe that it's mostly caused by human behavior.

                  It's true; the earth does go through cycles of temperature. But to say that's the explanation is to totally ignore the rest of the data. This period of warming is not the normal cycle; the extremes we are seeing now have not been seen before, ever. So, if it's just the normal cycle of the earth then how do you explain the fact that the median temperature has continued to rise dramatically over the past several decades. If it were normal then the median would be normal. It's not, it's going up. Let me say that one more time, it's going up. It's not the typical cycle that the earth is used to; there's another factor at play here. Deny it all you want; but when it jumps up and slaps you in the face I don't want to hear you crying about it.

                  • 5 votes
                  #14.2 - Sun Dec 23, 2012 9:59 PM EST

                  even though it has been proven wrong.

                  The Faux Noise propaganda outlet proving something regarding science doesn't count.....well, to most of us anyway.

                  • 1 vote
                  #14.3 - Sun Dec 23, 2012 10:06 PM EST

                  Hey Sherron you had a good Post going until you to pulled politics into it..

                  The title of this article has nothing to do with politics "Satellites check in on the North Pole" unless there was a secret hidden title that appered to you, please point it out to me..

                  Take it elsewhere...

                  • 1 vote
                  #14.4 - Sun Dec 23, 2012 10:20 PM EST

                  1. Global warming was proven by the Koch brothers, who funded a careful study that proved human-caused global warming is worse than previously reported.

                  2. Politics does play a part, as the Bush administration purposely hushed any global warming reports. In fact, it is his billionaire buddies like the Koch brothers who have been laughing all the way to the bank, with arctic drilling and also arctic shipping... oops, our "enemy" [sic] Russia is making most of the profits, because that shipping is between Europe and China. But don't worry, the multi-national corporation billionaires will make a profit, and don't worry, they can still send their millions and millions of dollars to GOP political PACs to try to hoodwink a few people into thinking that they actually do not believe in global warming (while they continue to laugh and put more profits in the bank... an overseas bank, mind you).

                  • 2 votes
                  #14.5 - Sun Dec 23, 2012 11:16 PM EST

                  Hey, look, it's another brilliant thinker - Sherron. Yes, people who don't abide by all of the talking points of the political arm of the global warming movement are conservatives, and, hur hur, Mitt Romney! Mitt Romney! Mitt Romney! Just like everyone who is wholly ignorant of basic economic principles is a liberal, and Nancy Pelosi! Nancy Pelosi! Nancy Pelosi!

                  You're the same kind of ignorant f*cktard as the ignorant f*cktards you're trying to convince yourself you're better than. Get over yourself and start thinking. For once.

                    #14.6 - Mon Dec 24, 2012 12:33 AM EST

                    Ah, another thinker in Elizabeth. Koch brothers! Bush! Conspiracy! If not for the REPUBLICANS the world would be amazing! There are no other factors in anything other than REPUBLICAN GUIDED CONSPIRACY AND SHENANIGANS!

                    The world must be so easy for the stupid. Meanwhile, the rest of us have to endure both the problems of the world, and the stupidity of people like Elizabeth.

                      #14.7 - Mon Dec 24, 2012 12:35 AM EST
                      Comment author avatarCarrington Birnievia Facebook

                      I've been wondering about polar ice and hoping to watch it grow.I've been checking the temperature readings from the bouys around the edges of the arctic ocean. seeing no ice forming, I googled polar ice, and ended with some legitimate seeming report. I moved a link to desktop, but it's so cluttered I can't find it at the moment. To paraphrase, the writer graphed arctic and antartic icefield extent over time. He found an 11 year cycle which is now at it's nadir for the artic. He claimed the antarctic ice field is now the largest in extent ever recorded, while the arctic is the least. This is irrespective of global warming trends, and represents a cyclical pattern that at the moment is reinforcing the preception of global warming 's effects.

                        #14.8 - Mon Dec 24, 2012 1:44 AM EST

                        Geoengineering is man made and your govts are presently doing this for the last 50 years for reasons known and unknown. Please understand they are changing the weather patterns and are Man Made. But, putting the blame or deflecting the blames so the sheeple will attack the wrong persons or organizations.

                        See this

                        • 1 vote
                        #14.9 - Wed Dec 26, 2012 5:37 AM EST
                        Reply

                        if the so-called scientist can't agree on this why should they be taken seriously? if this has occurred before several times........granted, we'll all have a hell of a time trying to survive this but, it is what it is!!

                          Reply#15 - Sun Dec 23, 2012 9:15 PM EST

                          OK, I'll bite: what scientists who actually work with atmospheric science, geology, hydrology, etc., do you know who are climate change skeptics? Or are you just parroting some other disinformation? I can name a few like John Christie, but I could also name 50 others who strongly disagree with him. We're waiting:

                          • 5 votes
                          #15.1 - Sun Dec 23, 2012 9:54 PM EST

                          Dear Tetrapoda,

                          What scientists who actually work with atmospheric science, geology, hydrology, etc., do you know, period? None? That's what I thought.

                          Here's a hint: THAT the climate is changing is not denied. The degree to which it has been influenced by man is the debate, as is what the proposals from the heavily politicized arm of the global warming movement would actually do to change anything, and at what cost that lack of change may come.

                          Stop with the "disinformation" bull@!$%#. People have opinions and reasons for those opinions. Not everything is some grand plan or conspiracy against your beliefs.

                            #15.2 - Mon Dec 24, 2012 12:38 AM EST

                            Two Ashes:

                            "Here's a hint: THAT the climate is changing is not denied. The degree to which it has been influenced by man is the debate, as is what the proposals from the heavily politicized arm of the global warming movement would actually do to change anything, and at what cost that lack of change may come."

                            NASA doesn't share your view. The charts and the data they have say man-made mostly. Check out there website NASA Climate change.

                            Can you provide a link showing data that states otherwise? Interested in what you are looking at. There is a big concern that in the future the Keys will have area under water due to the rising sea levels.

                            • 1 vote
                            #15.3 - Mon Dec 24, 2012 1:44 AM EST

                            Just google geoengineering , as well as, you tubing the same. You will see that you are putting the blame on the wrong entities. Salting the skies are your culprits and they are MAN MADE. But just not for the reasons you think.

                              #15.4 - Wed Dec 26, 2012 5:41 AM EST
                              Reply

                              Where's the rest of the story? How does the current compare to historical minimum and maximum sea ice for the same period? Okay, so this looks "bad" compared to a statistical median but without knowing the variation over the same period it only tells a small piece of the story.

                              Additionally, 40ish years is also a very small period of time historically speaking. I know we didn't have satellites orbiting say 500 years ago, but you don't have to go back that far in time to find out why the island of Greenland was called Greenland in the first place. I'm sure the ice pack had nothing to do with it.

                                Reply#16 - Sun Dec 23, 2012 9:24 PM EST

                                Tman...

                                Named to attract settlers

                                The name Greenland comes from the early Scandinavian settlers. In the Icelandic sagas, it is said that Norwegian-born Erik the Red was exiled from Iceland for murder. Along with extended family and thralls, he set out in ships to find a land rumored to lie to the northwest. After settling there, he named the land Grœnland (translated as "Greenland"), supposedly in the hope that the pleasant name would attract settlers.[9][10]

                                • 3 votes
                                #16.1 - Sun Dec 23, 2012 9:37 PM EST

                                Last summer's observations recorded the historical minimum for Arctic sea ice extent for the period during which satellites have been taking readings - which amounts to more than three decades. That's laid out in this NASA feature:

                                http://www.nasa.gov/topics/earth/features/arctic-seaice-2012.html

                                The story of ice loss and sea water rise is pretty complex. Here's a report talking about the net loss from Greenland and Antarctica that also addresses the gain in East Antarctica vs. the loss in West Antarctica:

                                http://worldnews.nbcnews.com/_news/2012/11/29/15518574-antarctica-greenland-ice-definitely-melting-into-sea-and-speeding-up-experts-warn?lite

                                There was another report just today about West Antarctica:

                                http://worldnews.nbcnews.com/_news/2012/12/23/16110168-west-antarctica-warming-much-faster-than-previously-believed-study-finds?lite

                                You're quite right that when you go back hundreds of years, the story gets even more complex. I didn't want to get that deeply into the "rest of the story" for this item, but if folks want to delve into the historical precedents in their comments, I'm all for it.

                                Here are some additional links that hint at the challenges relating to historical analysis:

                                http://www.msnbc.msn.com/id/48469705/ns/world_news-world_environment/t/greenland-ice-said-more-robust-climate-change-feared/

                                http://www.msnbc.msn.com/id/46704609/ns/us_news-environment/t/greenland-ice-could-melt-faster-thought-study-finds/

                                http://www.msnbc.msn.com/id/43467786/ns/technology_and_science-science/t/cold-snap-may-have-obliterated-viking-colony/

                                • 3 votes
                                #16.2 - Sun Dec 23, 2012 9:42 PM EST

                                ...Thank you for adding the other links..You, like everyone else has a `boss'. You were only allowed so much text for a very large story. As I notice your interaction with these comments, I am sensing you will be writing a larger story..to be posted somewhere despite the boss's red pencil.

                                  #16.3 - Sun Dec 23, 2012 11:31 PM EST

                                  Besides the historical oddity of the names "Iceland" and "Greenland," a Viking joke used to attract settlers to Greenland, there is no evidence of any recent warming of the Arctic. Core samples of ice prove that the Arctic ice is very old, far older than the Vikings. The article also did not state that for the first time ever, the surface of Greenland melted across the whole continent in July of 2012. That does not mean that the mile-thick ice all melted, but that the surface turned into vast lakes. Those lakes find their way down crevices, and under the thick ice, lubricating the ice cap so that it is moving. It is only a matter of a short time before all that Greenland ice will be gone.

                                  The large extent of sea ice in Antarctica some months ago was most likely due to its huge melting glaciers that are all fresh water, that freezes again at higher temperatures than salt water. The southern currents which circle Antarctica keep the water there. I have been watching these maps for a few years, and I notice that the ice melts last around Greenland for the same reason: the fresh water from Greenland flows into the ocean, and freezes at a much higher temperature than the rest of the salt water.

                                  The Arctic waters and winds do not stay in the Arctic, but the water currents flow under the ice cap, and air currents above it. With so much water exposed, there was not enough temperature differential to drive the northern "jet stream," and that caused extreme drought in the American Great Plains, and also in Mongolia and other grasslands. These areas also produce a huge quantity of the world's food. In previous centuries, a sudden loss of water and food tended to preface wars.

                                  There are so many different concerns, not just the polar bears (not very cuddly creatures, but necessary), wolverines, foxes, seals, walruses, etc. But I don't want to see those creatures become a thing of the past either. Let some part of the earth alone.

                                    #16.4 - Sun Dec 23, 2012 11:34 PM EST
                                    Comment author avatarCarrington Birnievia Facebook

                                    elizabeth, I'm going to look for you on FB , we have interests overlaping. I've been watching cloud patterns on google earth, and started being more methodical when I noticed that all the sudden changes coincided with changes in the jetstream. It was like taking an eraser across a thickly written chalk-board. If you have been watching polar ice for two years, I'd be interested in your observations and conclusions.

                                      #16.5 - Tue Dec 25, 2012 9:16 AM EST
                                      Reply
                                      Comment author avatarBill Smithvia Facebook

                                      I hate to be picky, but proof reading is a thing of the past on most things I read. I'm not a pro at the English language, but at least I try as it's the only language I know. "sea level rice has accelerated in the region" Great for the rice farmers I guess.

                                      • 2 votes
                                      Reply#17 - Sun Dec 23, 2012 9:33 PM EST

                                      Thanks for spotting that, it's fixed.

                                      • 2 votes
                                      #17.1 - Sun Dec 23, 2012 9:44 PM EST
                                      Reply
                                      Comment author avatarBill Smithvia Facebook

                                      But then I read about volcanoes putting more into the air in a day than what us humans have in the last 10 years. I really don't know what to believe or blame this on. I really just think it's part of a natural cycle the earth has gone through many times in past and there is nothing we can do about it other than adapt like they had to do with the small ice ages in the past. If it gets too cold or too hot to live there, then move like they did years ago as the food supply is moving with or without you also.

                                      • 1 vote
                                      Reply#18 - Sun Dec 23, 2012 9:43 PM EST

                                      Volcanoes put more greenhouse gasses in the atmosphere per year then humans have in our history. However, that is almost entirely water vapor which precipitates in a few weeks. The offsetting short-term effect of the particulates blocking the sunlight makes the two influences pretty much cancel each other out.

                                      On the other hand, volcanoes emit approximately 10 million tons of CO2 per year, but humans contribute approximately 100 BILLION tons of CO2 per year (usgs site). CO2 takes decades to be reabsorbed from the atmosphere. The fact that will be cited in conversations depends on the political influence of the one that is speaking.

                                      • 5 votes
                                      #18.1 - Sun Dec 23, 2012 10:17 PM EST
                                      Reply

                                      There has been and always will be changes in the temperatures and the atmosphere. it is natural though humans may play a very small part. Interesting that the Artic (2% of the planets ice) is shrinking and the Antarctic (over 90% of the planets ice) is growing at a high rate. The Earths oval course revolving around the Sun and the wobble of the earth and many other factors come in to play. It has become a political issue while most of the factors they quote are wrong.

                                        Reply#19 - Sun Dec 23, 2012 9:43 PM EST

                                        No. Part of the Antarctic ice sheet is growing, in East Antarctica, because of... climate changes that affect wind and precipitation patterns, meaning that it's snowing more in that area which is truly bizarre since it's essentially a frozen desert. Changes in Earth orbit, and precession, do affect climate over tens of thousands of years, but they can be overriden by atmospheric conditions and sea circulation patterns. Also the current changes are unusually fast, taking place in decades rather than millenia.

                                        • 5 votes
                                        #19.1 - Sun Dec 23, 2012 9:58 PM EST
                                        Reply

                                        Hmmm no mention of the South Pole ,wonder why ?? Maybe because ice is accumulating there at record rate .

                                        These people are in the tank for Obama and his radical agenda which includes a carbon tax that will almost double your power rates so a hoax is created .

                                        Keep drinking the Kookaid ...

                                          Reply#20 - Sun Dec 23, 2012 9:52 PM EST

                                          No, please actually make an effort to read and understand science... global scale wind and ocean current patterns are changing which affect East Antarctica resulting in more snow there, since there's more moisture in the atmosphere from warmer sea surface temperatures. It's counter-intuitive but a warming atmosphere has the effect of growing glaciers in some places simply because they receive more inputs in the short term. If you're fixated on yapping about Obama at every challenge your life must be really miserable; I'm sorry.

                                          • 5 votes
                                          #20.1 - Sun Dec 23, 2012 10:01 PM EST

                                          Jrock

                                          who will your homework for you in the first grade next year?

                                          You might reasonably suspect that all the fuss about disappearing Arctic sea ice is overblown, then, given the growth of ice down south.

                                          But you’d be wrong, for all sorts of reasons.

                                          Credit: US Embassy New Zealand

                                          The first is that the 1 percent growth per decade in the Antarctic pales next to the much faster 15.5 percent drop per decade in the Arctic. They aren’t even in the same ballpark. Not only that: while the sea ice bordering Antarctica has been growing slightly, the massive ice sheets that sit directly atop the frozen continent are shrinking, at an accelerating rate, with worrisome implications for global sea level rise.

                                          • 4 votes
                                          #20.2 - Sun Dec 23, 2012 10:02 PM EST

                                          One reason I focused on the Arctic is because there's already been so much about the Antarctic climate situation recently (see my comment above). The other reason is, I admit it, because of the Santa Claus angle.

                                          • 4 votes
                                          #20.3 - Sun Dec 23, 2012 10:09 PM EST

                                          Keep drinking the Kookaid ...

                                          Sounds like you've already had your fill.

                                          • 2 votes
                                          #20.4 - Sun Dec 23, 2012 10:24 PM EST
                                          Reply

                                          Brings memories of a favorite old "Fright Night" movie flick titled "The Thing" from the 50's where scientists discover a flying saucer stuck in an iceberg.

                                          • 1 vote
                                          Reply#21 - Sun Dec 23, 2012 10:01 PM EST

                                          Even if Climate change is not being helped along at a faster rate by humans like the Republicans keep saying. What I want to know is why are the Republicans so Pro Pollution? Do none of them remember the rivers in this country catching fire and the air so bad that you could hardly breathe in some parts of the country and world.

                                          Why do you Republicans keep trying to destroy the planet that you say your God put you in charge of. Why do you insist on trashing the planet and killing it's species?

                                          • 3 votes
                                          Reply#23 - Sun Dec 23, 2012 10:13 PM EST

                                          Listen, being a lifelong Republican myself that contributes in more ways than just voting, I can say with a high degree of certainty that Republicans and the vast majority of conservatives (I can't speak for everybody) do not WANT to trash the planet or are even "Pro Pollution" as you say. I mean common on, who in their right mind is Pro pollution anyway? These comments are mainly rhetoric that many on the left (including certain news outlets) push to try to gain more supporters to for whatever motives they may have.

                                          Don't buy into everything you hear from them. We want many of the same things that our Democrat friends want too, we just have different views on how to get there.

                                            #23.1 - Mon Dec 24, 2012 12:10 PM EST
                                            Reply

                                            I've seen the real atrocities

                                            Buried in the sand

                                            Stockpiled safety for a few

                                            While we stand holding hands
                                            I'm living in the ice age

                                            I'm living in the ice age

                                            Nothing will hold, nothing will fit

                                            Into the cold, a smile on your lips

                                            Living in the ice age

                                            Living in the ice age

                                            Living in the ice age

                                            Searching for another way

                                            Seen hide behind the door

                                            We'll live in holes and disused shafts

                                            Hopes for little more

                                            I'm living in the ice age

                                            I'm living in the ice age

                                            Nothing will hold, nothing will fit

                                            Into the cold, a smile on your lips

                                            Living in the ice age

                                            • 1 vote
                                            Reply#24 - Sun Dec 23, 2012 10:21 PM EST

                                            Oh my Tetrapoda did I strike a nerve ..haha libs are insane

                                            • 1 vote
                                            Reply#25 - Sun Dec 23, 2012 10:24 PM EST

                                            I've seen the real atrocities

                                            Buried in the sand

                                            Stockpiled safety for a few

                                            While we stand holding hands

                                            I'm living in the ice age

                                            I'm living in the ice age

                                            Nothing will hold, nothing will fit

                                            Into the cold, a smile on your lips

                                            Living in the ice age

                                            Living in the ice age

                                            Living in the ice age

                                            Searching for another way

                                            Seen hide behind the door

                                            We'll live in holes and disused shafts

                                            Hopes for little more

                                            I'm living in the ice age

                                            I'm living in the ice age

                                            Nothing will hold, nothing will fit

                                            Into the cold, a smile on your lips

                                            Living in the ice age

                                              Reply#26 - Sun Dec 23, 2012 10:26 PM EST

                                              My hats off for Mr Alan Boyle for taking action when reading the comments pointing out the errors and acting on them, hopefully the rest of your co-workers will take your lead on it, BTW good article..

                                              • 3 votes
                                              Reply#27 - Sun Dec 23, 2012 10:26 PM EST

                                              Thanks, MillerMan!

                                              • 1 vote
                                              #27.1 - Mon Dec 24, 2012 2:51 AM EST
                                              Reply
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