An abnormally cool Arctic is seeing dramatic changes to ice levels. In sharp contrast to the rapid melting seen last year, the amount of global sea ice has rebounded sharply and is now growing rapidly. The total amount of ice, which set a record low value last year, grew in October at the fastest pace since record-keeping began in 1979.
The actual amount of ice area varies seasonally from about 16 to 23 million square kilometers. However, the mean anomaly-- defined as the difference between the current area and the seasonally-adjusted average-- changes much slower, and generally varies by only 2-3 million square kilometers.
That anomaly had been negative, indicating ice loss, for most of the current decade and reached a historic low in 2007. The current value is again zero, indicating an amount of ice exactly equal to the global average from 1979-2000.
Bill Chapman, a researcher with the Arctic Climate Center at the University of Illinois, says the rapid increase is "no big deal". He says that, while the Arctic has certainly been colder in recent months, the long-term decrease is still ongoing. Chapman, who predicts that sea ice will soon stop growing, sees nothing in the recent data to contradict predictions of global warming.
Others aren't quite so sure. Dr. Patrick Michaels, Professor of Environmental Science at the University of Virginia, says he sees some "very odd" things occurring in recent years. Michaels, who is also a Senior Fellow with the Cato Institute, tells DailyTech that, while the behavior of the Arctic seems to agree with climate models predictions, the Southern Hemisphere can't be explained by current theory. "The models predict a warming ocean around Antarctica, so why would we see more sea ice?" Michaels adds that large areas of the Southern Pacific are showing cooling trends, an occurrence not anticipated by any current climate model.
On average, ice covers roughly 7% of the ocean surface of the planet. Sea ice is floating and therefore doesn't affect sea level like the ice anchored on bedrock in Antarctica or Greenland. However, research has indicated that the Antarctic continent -- which is on a long-term cooling trend -- has also been gaining ice in recent years.
The primary instrument for measuring sea ice today is the AMSR-E microwave radiometer, an instrument package aboard NASA's AQUA satellite. AQUA was launched in 2002, as part of NASA's Earth Observing System (EOS).
quote: ...this isn't the place for politics.
quote: See, this is the problem with stupid people these days, especially left-wingers. They want to make everything political.
quote: Every national science academy of every major industrialised country on the planet confirms recent climate change is due to human activity.
quote: In 1975, The US National Academy of Science confirmed global cooling was a serious problem also. And that's hardly the first thing they've been wrong about.
quote: According to the Academy [the NAS] report on climate, we may be approaching the the end of a major interglacial cycle, with the approach of a full-blown 100-year long ice age a real possibility...with ice packs building up relatively quickly from local snowfall that fails to melt form winter to winter"
quote: "there are ominous signs that the earth's weather patterns have begun to change dramatically and that these changes portend a drastic decline in food production -- with serious political implications for just about every nation on earth
quote: Idealism can sometimes push a nobler goal, but you need enough realism to make it actually happen.
quote: Very often the real world works the way it works, not they way we wish it did. We need to be constantly reminded of that.
quote: Computer analyses of global climate have consistently overstated warming in Antarctica, concludes new research by scientists at the National Center for Atmospheric Research (NCAR) and Ohio State University
quote: A new report on climate over the world's southernmost continent shows that temperatures during the late 20th century did not climb as had been predicted by many global climate models.
quote: Climate models generally predict amplified warming in the polar regions...In the Antarctic, over the past half-century there has been a marked warming trend in the Antarctic Peninsula.**** Elsewhere there is a general but not unambiguous warming trend
quote: Antarctica doesn't agree with model predictions.
quote: The term Anthropocene, proposed and increasingly employed to denote the current interval of anthropogenic global environmental change, may be discussed on stratigraphic grounds. A case can be made for its consideration as a formal epoch in that, since the start of the Industrial Revolution, Earth has endured changes sufficient to leave a global stratigraphic signature distinct from that of the Holocene or of previous Pleistocene interglacial phases, encompassing novel biotic, sedimentary, and geochemical change. These changes, although likely only in their initial phases, are sufficiently distinct and robustly established for suggestions of a Holocene–Anthropocene boundary in the recent historical past to be geologically reasonable. The boundary may be defined either via Global Stratigraphic Section and Point (“golden spike”) locations or by adopting a numerical date. Formal adoption of this term in the near future will largely depend on its utility, particularly to earth scientists working on late Holocene successions
quote: I would think this is an all or nothing scenario.... Either the predictions are right or they are not.
quote: You want to completely throw out predictions which said that Antarctica was warming and accept all the portions of them that say the entire earth is warming?
quote: There was a comment earlier about 'cherry picking' and I believe this conforms to that comment.
quote: Amazing. Everything has to be black or white, right or left, with us or against us. What a wonderful mindset.
quote: Anyone can edit any article
quote: The Jeffersonian philosophy that animates Cato's work has increasingly come to be called "libertarianism" or "market liberalism." It combines an appreciation for entrepreneurship, the market process, and lower taxes with strict respect for civil liberties and skepticism about the benefits of both the welfare state and foreign military adventurism.
quote: If only you knew how *stupid* you look to those of us with a working intellect....
quote: They all brought change, didn't they?
quote: if two people have two different ideas, how do they agree? Someone has to change their opinion.
quote: Remember, the larger the government, the less the freedom.
quote: I am neither bitter nor cynical but I do wish there was less immaturity in political thinkingA conservative is a man with two perfectly good legs who, however, has never learned how to walk forward.Competition has been shown to be useful up to a certain point and no further, but cooperation, which is the thing we must strive for today, begins where competition leaves off.Here is my principle: Taxes shall be levied according to ability to pay. That is the only American principle.There are many ways of going forward, but only one way of standing still.True individual freedom cannot exist without economic security and independence. People who are hungry and out of a job are the stuff of which dictatorships are made.There is a mysterious cycle in human events. To some generations much is given. Of other generations much is expected. This generation of Americans has a rendezvous with destiny.
quote: I am neither bitter nor cynical but I do wish there was less immaturity in political thinking. A conservative is a man with two perfectly good legs who, however, has never learned how to walk forward.
quote: Why the rant - your party won the election? You should be happy - or won't you be happy until we are all assimilated by your left wing borg?
quote: Why the rant - your party won the election? You should be happy