Holocene Temperature Records show Millennial Scale Peroidicity Print E-mail
Written by Craig Loehle and S. Fred Singer   
Thursday, 22 March 2012 13:10

Past studies have detected an ~ 1500-year climate cycle in various types of Pleistocene geologic or ice deposits. It has been proposed that a 1470-year cycle fits the Pleistocene Dansgaard-Oeschger (DO) oscillations and can be explained by a threshold model with forcing. We use nine temperature reconstructions to see if this cycle exists during the Holocene. All these datasets, except Greenland Holocene data, can be fit by models close to a 1470-year period or are compatible to such a model, or can be fit by cycles near 1200 years, both of which can be related to solar-forcing. These results lend suppor to the non-linear threshold model for initiation of Pleistocene DO events and suggest that this periodic climate cycle has continued into the Holocene, but with reduced magnitude.



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Dark Ages Cold Period in North America Print E-mail
Written by Staff   
Friday, 16 March 2012 11:46

One climatic cycle that has been found to occur throughout the globe during both glacial and interglacial periods alike is a millennial-scale oscillation that regularly alternates between warmer and colder intervals, the past two cycles of which have brought us the relative warmth of the Roman Warm Period[1], the relative coolness of the Dark Ages Cold Period[2], the heat of the Medieval Warm Period[3], the global chill of the Little Ice Age[4], plus the welcome warmth of the Current Warm Period. And considering the need to evaluate the climate of the modern era within the historical context of natural climate change, we here examine what researchers have learned about the Dark Ages Cold Period, specifically focusing on North America.



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Survival: Can Plants Migrate Fast Enough to Avoid Extinction? Print E-mail
Written by Staff   
Tuesday, 06 March 2012 18:25

One of the great horror stories associated with predictions of CO2-induced global warming is that the warming will be so fast and furious that many species of plants will not be able to migrate towards cooler regions -- poleward in latitude, or upward in elevation -- at rates that are rapid enough to avoid extinction. This claim may sound logical (due to its extreme simplicity); but is it true?



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Debris Flow and Global Warming Print E-mail
Written by Staff   
Wednesday, 22 February 2012 20:01

Debris flows are a type of mass movement that frequently cause major destruction in alpine areas. Because debris flows are generally the product of heavy precipitation events, and because climate models project a future increase in the frequency and/or intensity of extreme precipitation events in consequence of CO2-induced global warming, many have become alarmed that such disastrous earthen flows will become more commonplace. In the present review, the likelihood of this claim is evaluated from three data-driven studies reported in the peer-reviewed scientific literature.



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Global Warming and Animal Parasitic Diseases Print E-mail
Written by Staff   
Wednesday, 08 February 2012 16:13

One of the perceived great tragedies of CO2-induced global warming is that rising temperatures will increase the development, transmission, and survival rates of parasites in general, leading to a perfect storm of biological interactions that will raise the prevalence of parasitic disease among animals in the future. But is this really so?



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More Than 1000 International Scientists Dissent over Man-Made Global Warming Claims Print E-mail
Written by Marc Morano   
Thursday, 02 February 2012 14:54


More than 1,000 dissenting scientists (updates previous 700 scientist report) from around the globe have now challenged man-made global warming claims made by the United Nations Intergovernmental Panel on Climate Change (IPCC) and former Vice President Al Gore. This new 2010 321-page Climate Depot Special Report -- updated from the 2007 groundbreaking U.S. Senate Report of over 400 scientists who voiced skepticism about the so-called global warming ?consensus? -- features the skeptical voices of over 1,000 international scientists, including many current and former UN IPCC scientists, who have now turned against the UN IPCC. This updated 2010 report includes a dramatic increase of over 300 additional (and growing) scientists and climate researchers since the last update in March 2009. This report's release coincides with the 2010 UN global warming summit in being held in Cancun.



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2012 Global Warming Report Card Print E-mail
Written by Steven Goddard   
Wednesday, 01 February 2012 12:04

The massive bulk of evidence indicates that nothing is wrong, and that Hansen, Mann and the rest of the hockey team are not being honest with us.



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Peatlands Print E-mail
Written by Staff   
Wednesday, 01 February 2012 11:53

Global warming has been predicted by the IPCC to release long-sequestered carbon in Earth's peatlands to the atmosphere, possibly freeing enough of it at a sufficiently rapid rate to rival CO2 emissions from anthropogenic sources, with the end result of this scenario being a strong positive feedback to the ongoing rise in the air's CO2 content, which the IPCC contends will lead to further warming of the planet. But is this contention correct?



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The Skeptic's Case: Who are You Going to Believe? The Government Climate Scientists or the Data? Print E-mail
Written by Dr. David Evans   
Saturday, 28 January 2012 09:37

We check the main predictions of the climate models against the best and latest data. Fortunately the climate models got all their major predictions wrong. Why? Every serious skeptical scientist has been consistently saying essentially the same thing for over 20 years, yet most people have never heard the message -- here it is, put simply enough for any lay reader willing to pay attention.



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In the Eye of the $torm - Kerry Emmanuel - The Non Political Scientist Print E-mail
Written by Dennis Ambler   
Monday, 23 January 2012 17:14

Dr Kerry Emanuel of MIT caused a storm recently, when he said in a Mother Jones video that, as a Republican scientist, he is almost ashamed to be an American, because not all Republican candidates have embraced Global Warming. An LA Times Op-Ed from January 5th 2012, portrayed him as the conservative scientist out to save the world.

In February last year, Dr Emanuel was playing the same “Republican scientist who believes in global warming” message in a radio interview for NPR. He brought in the usual mantras about the tobacco industry and a campaign of disinformation funded by vested interests, but failed to mention his own vested interest in the disaster insurance business.



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Report of the Commission to Assess the Threat to the United States from EMP Attack, Volume 1: Executive Report Print E-mail
Written by Dr. William R. Graham (Chairman), et al.   
Saturday, 14 January 2012 09:56

Report of the Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP) Attack Volume 1: Executive Report 2004.



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EPA Regulation of Fuel Economy: Congressional Intent or Climate Coup? Print E-mail
Written by Marlo Lewis   
Friday, 13 January 2012 14:24

This paper assesses EPA’s rule setting standards for motor vehicle greenhouse gas emissions.



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Threats to the U.S. Power Grid: Implications for Policy Print E-mail
Written by Robert Ferguson   
Wednesday, 11 January 2012 15:44

According to the EMP Commission, within 12 months of an EMP event between two thirds to 90% of the U.S. population will be dead.



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Testings an Astronomically Based Decadal-Scale Empirical Harmonic Climate Model vs. the IPCC (2007) General Circulation Climate Models Print E-mail
Written by Nicola Scafetta, PhD   
Friday, 06 January 2012 10:04

We compare the performance of a recently proposed empirical climate model based on astronomical harmonics against all CMIP3 available general circulation climate models (GCM) used by the IPCC (2007) to interpret the 20th century global surface temperature. The proposed astronomical empirical climate model assumes that the climate is resonating with, or synchronized to a set of natural harmonics that, in previous works (Scafetta, 2010b, 2011b), have been associated to the solar system planetary motion, which is mostly determined by Jupiter and Saturn. We show that the GCMs fail to reproduce the major decadal and multidecadal oscillations found in the global surface temperature record from 1850 to 2011. On the contrary, the proposed harmonic model (which herein uses cycles with 9.1, 10–10.5, 20–21, 60–62 year periods) is found to well reconstruct the observed climate oscillations from 1850 to 2011, and it is shown to be able to forecast the climate oscillations from 1950 to 2011 using the data covering the period 1850–1950, and vice versa. The 9.1-year cycle is shown to be likely related to a decadal Soli/Lunar tidal oscillation, while the 10–10.5, 20–21 and 60–62 year cycles are synchronous to solar and heliospheric planetary oscillations. We show that the IPCC GCM’s claim that all warming observed from 1970 to 2000 has been anthropogenically induced is erroneous because of the GCM failure in reconstructing the quasi 20-year and 60-year climatic cycles. Finally, we show how the presence of these large natural cycles can be used to correct the IPCC projected anthropogenic warming trend for the 21st century. By combining this corrected trend with the natural cycles, we show that the temperature may not significantly increase during the next 30 years mostly because of the negative phase of the 60-year cycle. If multisecular natural cycles (which according to some authors have significantly contributed to the observed 1700–2010 warming and may contribute to an additional natural cooling by 2100) are ignored, the same IPCC projected anthropogenic emissions would imply a global warming by about 0.3–1.2 C by 2100, contrary to the IPCC 1.0–3.6 C projected warming. The results of this paper reinforce previous claims that the relevant physical mechanisms that explain the detected climatic cycles are still missing in the current GCMs and that climate variations at the multidecadal scales are astronomically induced and, in first approximation, can be forecast.



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How Does Wind Respond to Rising Temperatures? Print E-mail
Written by Staff   
Tuesday, 03 January 2012 12:36

Differences in pressure, or pressure gradients, cause wind. So, how does wind respond to rising temperatures? Several studies have addressed different aspects of this question in recent years.



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Historic Trends in Arctic Glacier Behavior Print E-mail
Written by Staff   
Tuesday, 03 January 2012 12:34

Computer simulations of global climate change have long indicated the world’s polar regions should show the first and severest signs of CO2-induced global warming. If the models are correct, these signs should be especially evident since the second half of the 20th century, when approximately two-thirds of the modern-era rise in atmospheric CO2 occurred and Earth’s temperature supposedly rose, in the view of most climate alarmists, to a level unprecedented in the entire past millennium. In this review, we examine historic trends in Arctic glacier behavior to determine the credibility of current climate models with respect to their polar predictions.



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Frequency of Tropical Storms and Hurricanes of the Atlantic Ocean over the Past Century Print E-mail
Written by Staff   
Tuesday, 03 January 2012 12:31

Have tropical storms and hurricanes of the Atlantic Ocean become more numerous over the past century, in response to what climate alarmists describe as unprecedented global warming?



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Atlantic Basin Hurricane Response to Increase in Temperature Print E-mail
Written by Staff   
Tuesday, 03 January 2012 12:20

How does the frequency of occurrence of Atlantic basin hurricanes respond to increases in temperature?



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Estimates of Global Food Production in the Year 2050 Print E-mail
Written by Staff   
Tuesday, 03 January 2012 12:12

Global food security is one of the most pressing societal issues of our time. Based on food production databases assembled and maintained by the United Nations, I have identified the specific crops that supply 95% of the food needs of the world, six large regions into which the world may be divided, twenty sub-regions, and twenty-five individual countries of particular interest. I have then projected trends in the productivities of these key crops for each of these geographical areas to the year 2050, finding that expected advances in agricultural technology and expertise will significantly increase the food production potential of many countries and regions, but discovering that these advances will not increase production fast enough to meet the demands of the planet’s even faster-growing human population.



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Report of the Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP) Attack Print E-mail
Written by Dr. William R. Graham (Chairman), et al.   
Wednesday, 21 December 2011 12:34

Report of the Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP) Attack.



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