Apr 27, 2008
An Urgent Signal for a Coming Ice Age
By Peter Harris
When paleoclimatologists met in 1972 to discuss how and when the present warm climate would end , termination of this warm climate we call the Holocene seemed imminent and it was expected that rapid cooling would lead to the coming ice age. These ideas were based on the 1M year analogue for climate transitions first proposed by Milankovitch over 60 years ago, which has been demonstrated to show the correlation of glacial and interglacial climate with solar insolation as it is modulated by our changing distance from the sun. These data sets may be used to serve as a signal for the coming ice age. Orbital geometry was approaching similar conditions to those of the previous transitions to ice.
But soon it was observed that global temperature was increasing and at about this time Global Climate Modeling GCM received more attention and the Milankovitch analogue was forgotten. There has been no further discussion about the coming ice age. The data below was compiled by the mathematicians Quinn, Levine et al in 1991 and Insolation values due to Precession, Obliquity and Eccentricity as well as total insolation or Solar Forcing are charted on the same time scale as Stages of Glaciation representing climate. This climate data was provided by Lisieckie and Raymo and is based on sediment proxies. The climate data shows close agreement with ice core data based on a different proxy. Produced in 1991 this chart confirms the correlation of climate transitions with insolation which is modulated by Earth position in orbit and was first proposed by Milankovitch over 60 years ago.
See full size graph here
In studying the analogue there is no use of a GCM which is subject to limitations and interpretation. Use of the analogue is based on simple observation of clear empirical data and the archeological record of temperature. The data and the correlation are sound. The geological record shows that the transitions are sudden, long term and extreme. All of the Milankovitch parameters for a transition are satisfied by the present orbital position. We have already seen extreme winter conditions and T appears to be declining in the short term. The decline will continue under rapidly declining insolation and the coincident effect of reduced solar activity which has also been correlated with temperature in the past. Read full opinion piece here.
Peter Harris is a retired Queensland Engineer
Apr 26, 2008
Late Spring Snows in the North Central
Stories in the Star Tribune and on KSFY.com
It’s late April, but Old Man Winter is showing that he isn’t finished with Minnesota just yet. A snowstorm has dumped snow across much of western and northern Minnesota - with some reports of a foot or more. The National Weather Service has received reports of an estimated 18 inches of snow in Pelican Rapids, 15 inches in Hawley and 13.5 inches in Wilkin. Other snowfall reports include 12 inches in Donnelly, more than 10 inches in Hewitt and 9.5 inches north of Park Rapids. It also snowed in the Twin Cities but not as much. Read more here. See video on what some clever Minnesotans think of this global warming here .
Also as Drew Sandholm on KSFY.com reported “Snow, snow, and more snow.” That’s what Brookings saw Friday. A lot of blowing snow, cars in the ditch, and semi after semi pulled over. Truckers like Harold Schachel are slowed down by the falling snow.
“Welcome to the great north area of the United States,” said Schachel. He was waiting on a load to take back to Wisconsin, but this snow was quickly stopping traffic. The snow fell so fast it caused low visibility, so the Highway Patrol closed Interstate-29 from Brookings all the way up to the North Dakota border.
See more here. See video here.
Apr 26, 2008
Ozone Hole Recovery May Reshape Southern Hemisphere Climate Change And Amplify Antarctic Warming
A full recovery of the stratospheric ozone hole could modify climate change in the Southern Hemisphere and even amplify Antarctic warming, according to scientists from the University of Colorado at Boulder, the National Oceanic and Atmospheric Administration and NASA. The authors used a NASA supercomputer model that included interactions between the climate and stratospheric ozone chemistry to examine how changes in the ozone hole influence climate and weather near Earth’s surface, said Perlwitz.
While Earth’s average surface temperatures have been increasing, the interior of Antarctica has exhibited a unique cooling trend during the austral summer and fall caused by ozone depletion, said Judith Perlwitz of the Cooperative Institute for Research in Environmental Sciences, a joint institute of CU-Boulder and NOAA. “If the successful control of ozone-depleting substances allows for a full recovery of the ozone hole over Antarctica, we may finally see the interior of Antarctica begin to warm with the rest of the world,” Perlwitz said. Read more here.
Icecap Note: Two things to note, they are using references to the “end of the 21st century” - which they like to do because none of us will be around to verify. Also note these scientists must not be aware or are ignoring the JPL findings reported in Nature last October, that the orginal consensus on man made causes for the ozone hole had collapsed. Laboratory experiments properly done at the appropriate pressures showed the rate of chemical reaction too small to be responsible, suggesting natural causation. The finding caused quite a stir with reactions like: “Our understanding of chloride chemistry has really been blown apart, says John Crowley, an ozone researcher at the Max Planck Institute of Chemistry in Mainz, Germany. “Until recently everything looked like it fitted nicely,” agrees Neil Harris, an atmosphere scientist who heads the European Ozone Research Coordinating Unit at the University of Cambridge, UK. “Now suddenly it’s like a plank has been pulled out of a bridge.” This was followed by a CYA study suggesting it was jut a delay.
Apr 23, 2008
Scientist Who voted for Gore in 2000 Now Debunks Warming Fears
By Dr. Don J. Easterbrook, Professor Emeritus Geology, Western Washington University
We’ve been warming up about a degree per century since the Little Ice Age in about 1600. We’ve been warming for 400 years, long before human-generated CO2 could have anything to do with the climate. If we project the previous century into the coming one, my projection is that we will have about a half-a-degree of cooling from 2007 (plus or minus three to five years) to about 2040. Then it will start getting warmer as we enter the next warm cycle, followed by cooling again.
For a number of interviews, especially in the national news media, they ask ‘Are you a Republican?’ and I say ‘No, Iím not, as a matter of fact, I voted for Al Gore. I donít want to pick on him because heís not a scientist.’ The nonsense he spews comes from the IPCC [United Nations Intergovernmental Panel on Climate Change], so in a sense I don’t condemn him as much as I do the so-called climatologists like [James] Hansen, who says things that are idiotic. They’re the ones giving him all this stuff.
Al Gore makes a hundred-million dollars? He has five-billion in his slush fund? Look at [U.S. Senator] Barbara Boxer, she sponsored a bill for carbon cap and trade [Sanders/Boxer Global Warming Bill S.309]. Who will benefit from hundreds of billions of dollars for administering a scheme like that? The other thing is research funding. The U.S. spends about two-billion dollars a year on research. Right now, if you submit anything that says CO2 is not the bad guy, you wonít have a chance of getting funding. It all goes to the CO2 people who build little fiefdoms; they have grant money coming out of their ears. They mimic Al Gore and say the debate is over. The last I heard, the U.S. plans to increase its research spending to 3.5 billion dollars, virtually all of which goes into CO2 research.
The last part of this equation is the news media and money being made by people like National Geographic who recently put out a show called Six Degrees of Global Warming [Six Degrees: Our Future on a Hotter Planet, by Mark Lynas] and how many people watched that and watched the ads that went with it? How much money did they make doing it? How much money would they have made if they’d said ‘Oh, it’s not CO2, it’s solar?’ Doom and gloom is easy to sell. Herman Goebbels said in World War II, and said it right, that if you tell a big enough lie often enough, people will eventually believe it. Today is like that, total hogwash. Gore made a statement that less than a half-dozen people in world don’t believe that CO2 causes AGW. That’s totally nuts. Read more and an interview with Dr. Easterbrook here.
Apr 22, 2008
Little Ice Age in Southern South America?
World Climate Report
The article was generated by a research team from Chile’s Universidad de Concepcion and the Pontificia Universidad Catolica de Valparaiso. Araneda et al. begin their piece noting that “Of all the climatic changes during the Holocene, the recent cooling period, the ‘Little Ice Age’(LIA), is one of the most broadly recognized events in the Northern Hemisphere. However, the duration and timing of the event has been disputed.” Furthermore, they note “A problem for the definition of the LIA is its variable timing and duration in different regions; thus, its synchronicity as a global phenomenon is still a matter of debate.” Once again, we learn that “debate” in climate change is still alive and well!
The research team concludes “The major contribution provided by the documentary evidence has been to confirm the occurrence of a cold period in the Laguna San Rafael area, which would be within the temporal window defined for the European LIA.” Furthermore, they conclude that “the sole historical evidence suggests that warm conditions prevailed around 1675, a date in which the front of the San Rafael glacier did not extend beyond the eastern shoreline of the lake. Later, a cooling period occurred from 1766 to 1898, with a peak between 1857 and 1871, during which the glacier advanced up to 8 km into the interior of the Laguna San Rafael. This cooling period declined after 1898, as evidenced by the decrease of the San Rafael glacier, which had retreated 1 km by 1904.” Most importantly to us at World Climate Report, they clearly state at the end “The recognition of the LIA in Northern Patagonia, through the use of documentary sources, provides important, independent evidence for the occurrence of this phenomenon in the region.” There are those who will insist that the Little Ice Age was not a global event, but somehow, just as the Northern Hemisphere cooled during the Little Ice Age, glaciers were expanding in southern South America? Starting to sound global to us! Read full report here.