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NASA Sees Arctic Ocean Circulation Do an About-Face....uh-oh, cancel that oslo trip..
I'll ask again: why are they giving algore a peace prize???
[QUOTE][B]NASA Sees Arctic Ocean Circulation Do an About-Face
PASADENA, Calif. – A team of NASA and university scientists has detected an ongoing reversal in Arctic Ocean circulation triggered by atmospheric circulation changes that vary on decade-long time scales. The results suggest not all the large changes seen in Arctic climate in recent years are a result of long-term trends associated with global warming.
The team, led by James Morison of the University of Washington's Polar Science Center Applied Physics Laboratory, Seattle, used data from an Earth-observing satellite and from deep-sea pressure gauges to monitor Arctic Ocean circulation from 2002 to 2006. They measured changes in the weight of columns of Arctic Ocean water, from the surface to the ocean bottom. That weight is influenced by factors such as the height of the ocean's surface, and its salinity. A saltier ocean is heavier and circulates differently than one with less salt.
The very precise deep-sea gauges were developed with help from the National Oceanic and Atmospheric Administration; the satellite is NASA's Gravity Recovery and Climate Experiment (Grace). The team of scientists found a 10-millibar decrease in water pressure at the bottom of the ocean at the North Pole between 2002 and 2006, equal to removing the weight of 10 centimeters (four inches) of water from the ocean. The distribution and size of the decrease suggest that Arctic Ocean circulation changed from the counterclockwise pattern it exhibited in the 1990s to the clockwise pattern that was dominant prior to 1990.
Reporting in Geophysical Research Letters, the authors attribute the reversal to a weakened Arctic Oscillation, a major atmospheric circulation pattern in the northern hemisphere. The weakening reduced the salinity of the upper ocean near the North Pole, decreasing its weight and changing its circulation.
"Our study confirms many changes seen in upper Arctic Ocean circulation in the 1990s were mostly decadal in nature, rather than trends caused by global warming," said Morison.
"While some 1990s climate trends, such as declines in Arctic sea ice extent, have continued, these results suggest at least for the 'wet' part of the Arctic -- the Arctic Ocean -- circulation reverted to conditions like those prevalent before the 1990s," he added.
The Arctic Oscillation was fairly stable until about 1970, but then varied on more or less decadal time scales, with signs of an underlying upward trend, until the late 1990s, when it again stabilized. During its strong counterclockwise phase in the 1990s, the Arctic environment changed markedly, with the upper Arctic Ocean undergoing major changes that persisted into this century. Many scientists viewed the changes as evidence of an ongoing climate shift, raising concerns about the effects of global warming on the Arctic.
Morison said data gathered by Grace and the bottom pressure gauges since publication of the paper earlier this year highlight how short-lived the ocean circulation changes can be. The newer data indicate the bottom pressure has increased back toward its 2002 level. "The winter of 2006-2007 was another high Arctic Oscillation year and summer sea ice extent reached a new minimum," he said. "It is too early to say, but it looks as though the Arctic Ocean is ready to start swinging back to the counterclockwise circulation pattern of the 1990s again."
Morison cautioned that while the recent decadal-scale changes in the circulation of the Arctic Ocean may not appear to be directly tied to global warming, most climate models predict the Arctic Oscillation will become even more strongly counterclockwise in the future. "The events of the 1990s may well be a preview of how the Arctic will respond over longer periods of time in a warming world," he said.
Grace monitors tiny month-to-month changes in Earth's gravity field caused primarily by the movement of water in Earth's land, ocean, ice and atmosphere reservoirs. As such it can infer changes in the weight of columns of ocean water. In contrast, the pressure gauges installed on the sea floor in 2005-2006 directly measured water pressure at the bottom of the ocean. Gauge data were remotely recovered during the first year of the study.
"The close agreement between the North Pole pressure gauges and Grace data demonstrates Grace's potential for tracking world ocean circulation," said study co-author John Wahr of the University of Colorado, Boulder.
"Satellite altimeters, such as NASA's Jason, are ideal for studying ocean circulation but can't be used at Earth's poles due to ice cover," said study co-author Ron Kwok of NASA's Jet Propulsion Laboratory, Pasadena, Calif. "Our results show Grace can be a powerful tool for tracking changes in the distribution of mass in the Arctic Ocean, as well as its circulation."
Grace is a partnership between NASA and the German Aerospace Center (DLR). The University of Texas Center for Space Research, Austin, has overall mission responsibility. JPL developed the twin satellites. DLR provided the launch, and GeoForschungsZentrum Potsdam, Germany, operates Grace. For more on Grace: [url]http://www.csr.utexas.edu/grace/[/url] .
The study was funded by the National Science Foundation.
[QUOTE]Sunday, November 11, 2007
Weather Channel Founder: Global Warming ‘Greatest Scam in History’
Intro by Joe D’Aleo, Icecap, CCM
I was privileged to work with John Coleman, the founder of The Weather Channel in the year before it became a reality and then for the first of the 6 years I was fortunate to be the Director of Meteorology. No one worked harder than John to make The Weather Channel a reality and to make sure the staffing, the information and technology was the very best possible at that time. John currently works with KUSI in San Diego. He posts regularly. I am very pleased to present his latest insightful post.
By John Coleman
It is the greatest scam in history. I am amazed, appalled and highly offended by it. Global Warming; It is a SCAM. Some dastardly scientists with environmental and political motives manipulated long term scientific data to create an illusion of rapid global warming. Other scientists of the same environmental whacko type jumped into the circle to support and broaden the “research” to further enhance the totally slanted, bogus global warming claims. Their friends in government steered huge research grants their way to keep the movement going. Soon they claimed to be a consensus.
Environmental extremists, notable politicians among them, then teamed up with movie, media and other liberal, environmentalist journalists to create this wild “scientific” scenario of the civilization threatening environmental consequences from Global Warming unless we adhere to their radical agenda. Now their ridiculous manipulated science has been accepted as fact and become a cornerstone issue for CNN, CBS, NBC, the Democratic Political Party, the Governor of California, school teachers and, in many cases, well informed but very gullible environmentally conscientious citizens. Only one reporter at ABC has been allowed to counter the Global Warming frenzy with one 15 minute documentary segment.
I do not oppose environmentalism. I do not oppose the political positions of either party. However, Global Warming, i.e. Climate Change, is not about environmentalism or politics. It is not a religion. It is not something you “believe in.” It is science; the science of meteorology. This is my field of life-long expertise. And I am telling you Global Warming is a non-event, a manufactured crisis and a total scam. I say this knowing you probably won’t believe a me, a mere TV weatherman, challenging a Nobel Prize, Academy Award and Emmy Award winning former Vice President of United States. So be it.
I have read dozens of scientific papers. I have talked with numerous scientists. I have studied. I have thought about it. I know I am correct. There is no run away climate change. The impact of humans on climate is not catastrophic. Our planet is not in peril. I am incensed by the incredible media glamour, the politically correct silliness and rude dismissal of counter arguments by the high priest of Global Warming.
In time, a decade or two, the outrageous scam will be obvious. As the temperature rises, polar ice cap melting, coastal flooding and super storm pattern all fail to occur as predicted everyone will come to realize we have been duped. The sky is not falling. And, natural cycles and drifts in climate are as much if not more responsible for any climate changes underway. I strongly believe that the next twenty years are equally as likely to see a cooling trend as they are to see a warming trend. See John’s full blog story here.. See John’s forecast blog on the KUSI site here.[/QUOTE]
[QUOTE=WestCoastOffensive;2210901]I attended a lecture at Stanford University in October; the hard-core data showed that we are in a cycle of warming; but that CO2 emissions are not helping.
Things don't seeem as dire as Gore would have us think. Yet I am happy he brought CO2 emissions awareness to the public.[/QUOTE]
So as I understand it, the "global warming" effects that won Al Gore a Nobel Peace Prize are results from a natural, cyclical occurance. At the same time, though, the CO2 emmissions, like you said, certaintly don't help. That seems pretty reasonable.