There have been a rash of bogus reports in the news media about rapidly rising sea-levels supposedly caused by global warming. Sea-levels are notoriously hard to measure on a global basis since land also rises and sinks due to tectonic activity. With historical records mostly unreliable how can we tell if current conditions are normal for Earth 14,000 years after a deglaciation? A new report, based on calcium growths in caves on the Mediterranean island of Mallorca, says that sea levels around 81,000 years ago were higher than today. Higher sea-levels imply less glacial ice and warmer temperatures than today as well. Even more interesting is that this occurred during a warm period called marine isotope stage (MIS) 5a, which was more than 30,000 years after the Eemian interglacial ended and glaciation had resumed. This could mean that current theories about how ice age glacial periods start are wrong.
A surprising revelation from a new paper: industrial emission actually have a net cooling effect on Earth's climate. The paper that appears in the Proceeding of the National Academy of Sciences early edition attempts to apportion blame for global warming among various economic sectors. Climate impacts of CO2, tropospheric ozone, fine aerosols, aerosol-cloud interactions, methane, and long-lived greenhouse gases were all analyzed and the appropriate human activities cited. When the dust settled, two sectors turned in large net negative (i.e. cooling) forcing values: biomass burning and industry.
The debate over anthropogenic global warming—a theory propounded by the UN IPCC—is often portrayed as an argument between deniers and true believers. The deniers supposedly claim that there is no global warming, man made or otherwise, and that the whole theory is a plot by left-wing agitators and closet socialists bent on world domination. The true believers, conversely, accept every claim of pending future disaster uttered by scientists and activists alike. As with most controversies both extreme positions are wrong and the truth lies somewhere in-between. As a scientist, I have studied the evidence and find the case for imminent, dangerous, human caused global warming unconvincing—here is why I am an AGW skeptic.
A report out from the United Nations Framework Convention on Climate Change meeting, which was held in Barcelona, identifies peaty wetlands as a major source of CO2. Marshes, swamps and bogs emit about 1.3 billion tonnes of CO2 a year as a result of human activity that drains them. If those dried out former swamps catch fire that amount can double and large amounts of aerosols can be emitted as well. With governments offering subsidies for growing biofuel crops the question is, how do we stop people from draining the world's remaining wetlands?
A new study in the journal Science has just shown that all of the climate modeling results of the past are erroneous. The IPCC's modeling cronies have just been told that the figures used for greenhouse gas forcings are incorrect, meaning none of the model results from prior IPCC reports can be considered valid. What has caused climate scientists' assumptions to go awry? Short lived aerosol particles in the atmosphere changing how greenhouse gases react in previously unsuspected ways. The result is another devastating blow to the climate catastrophists' computer generated apocalyptic fantasies.
In the face of ever mounting evidence that CO2 is incapable of causing the level of global devastation prophesied by climate change catastrophists a new villain is being sought. The leading candidate is nitrous oxide (N2O), better known as laughing gas. A report in Science claims that N2O emissions are currently the single most important cause of ozone depletion and are expected to remain so throughout the 21st century. The IPCC rates N2O as 310 times as potent a greenhouse gas as CO2 on a 100 year time scale. Is this a greenhouse gas bait and switch, or are the global warming alarmists trying to up the ante?
A new study has confirmed the astronomical theory of the ice ages, but with a new twist: The shutoff of the meridional ocean circulation, or MOC, and an associated southward shift of tropical monsoon rain belts seems to play an integral role in the melting of glacial period ice sheets. These changes cause warming of the Southern Hemisphere and a rise in atmospheric CO2 levels, which in turn provides a positive feedback loop that helps drive glacial termination. This is why, every 100,000 years or so, the great Northern Hemisphere ice sheets collapse and glacial conditions give way to a warm interglacial period, such as the Holocene warming humanity is currently enjoying. This, however, does not support recent claims that global warming is causing the Southeast Asian monsoon to fail.
Two of the terms bandied about by global warming alarmists are “unprecedented” and “irreversible.” It is troubling that scientists, who should know better, persist in using these terms even though the history of our planet clearly shows that neither term is accurate. Proof of this inaccuracy is obvious if we look back over the history of Earth—the Phanerozoic Eon in particular—taking the “Grand View” of historical climate change.
Not satisfied with blaming modern civilization for causing rampant climate change, now a small group of scientists are saying that everything went wrong once humans stopped being hunter-gatherers 9,000 years ago. The hypothesis, first advanced in 2003 by University of Virginia palaeoclimatologist William F. Ruddiman, remains controversial even among global warming true believers. Ruddiman now claims to have proven his critics wrong, much to the glee of the blame-humanity-first wing of the eco-activist community.
Two articles in the July 17 edition of Science describe efforts to model Earth's rapidly changing climate at the end of the last glacial period, between 21 and 11 thousand years years ago (ka). After a year and a half of number crunching on Oak Ridge National Laboratory's Jaguar supercomputer, the first results indicate that climate experienced cooling 17 ka, during the Heinrich Event 1 (H1), followed by an abrupt warming at the onset of the Bølling-Allerød Warming 14.5 ka. These abrupt climate changes were accompanied by large changes in the “ocean conveyor belt”: the Atlantic meridional overturning circulation (AMOC). The results suggest that this transition can be viewed simply as the North Atlantic climate response to rapidly changing glacial meltwater flow. The findings call for a paradigm shift in our understanding of abrupt climate change and weakens the threat of “irreversible tipping points” so popular with climate change extremists.
When it comes to climate, the early Paleogene period (~65-34 mya), at the start of the Cenozoic Era, had one of the most Eden like climates of the Phanerozoic Eon. As the Cenozoic progressed a cooling trend set in leading up to the formation of permanent ice caps and the Pleistocene Ice Age we are still experiencing. But before the world started to ice up our planet underwent one of the most dramatic bouts of global warming known to science—the Paleocene Eocene Thermal Maximum or PETM. Recently, global warming activists have tried to liken human CO2 emissions to the cause of the PETM, 55 million years ago. Is it true, that our actions may trigger a sudden sharp rise in global temperature?
In a new report, scientists used seven different climate models to assess human induced land cover change (LCC) at regional and global scales. The first results from the LUCID (Land-Use and Climate, IDentification of robust impacts) intercomparison study by Pitman et al. show no agreement among the models. This study indicates that land cover change is “regionally significant, but it is not feasible to impose a common LCC across multiple models for the next IPCC assessment.” In other words, this important factor is missing from current models and scientists are at a loss as to how to add it.
A town in Norfolk, UK, has begun heating many of its buildings, including the schools, by burning oil made from melted-down cow and pig carcasses. Around 30 properties in the North Norfolk town—including both the primary and the secondary school—are taking part in test trials, which started in December. The 12-month heating trial is being sponsored by the University of East Anglia (UEA), whose Low Carbon Innovation Centre was instrumental in setting up the plan.
A spectacular warehouse fire stopped traffic and drew a crowd of onlookers in Auckland, New Zealand, last Saturday night, but the interesting thing is that many people were convinced the fire was caused by a meteorite. The blaze broke out in a warehouse on the intersection of Ponsonby Road and McKelvie Street in Auckland sometime around 10:00pm. A number of people reported seeing what may have been a meteorite from various parts of the upper North Island streaking across the sky just after 10:00.
Listening to the verbal posturing by some eco-activists and like minded politicians might give one the impression that, with the recent sharp drop in world oil prices, all pressure to accelerate domestic oil production has abated. Nothing could be farther from the truth. Once again the counter argument is made by the most unlikely of sources, the OEDC IEA—an organization that, along with the UN IPCC, helped serve as ground zero for the global warming hysteria outbreak of recent times.