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?
One of the things that has been obscured by all the hand wringing and arm waiving about global warming is the existence of a threat to our planet that is very real and could arise suddenly. That threat is from non-planetary bodies within the solar system: asteroids, comets and other celestial wanderers. While the world's politicians and tree-hugging blowhards rail about the damage climate change might cause, a symposium was held in San Francisco to address a problem that actually could end life on Earth.
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.
According to State of the Climate in 2008, a special supplement to the August, 2009, issue of the Bulletin of the American Meteorological Society, greenhouse warming has been stopped in its tracks for the past 10 years. The HadCRUT3 temperature record shows the world warmed by only 0.07°C (±0.07°C) from 1999-2008. The UN's Intergovernmental Panel on Climate Change, who have led the global warming disaster circus for the past two decades, had predicted 0.20°C. Just a temporary setback claim the true believers, global warming will be back with a vengeance. Add a mad scientist's cackling laugh and you have a story fit for a comic book villain.
Despite recent attempts to revive the discredited “hockey stick” temperature graph, invented by Michael Mann and promulgated by the IPCC, new research on tropical glaciers has once again shown that supposed temperature history to be bogus. While the role of the tropics in climate change remains an open debate in climatology circles, new data suggests linkages between the tropics and the North Atlantic region. In particular, prominent glacial events and associated climatic shifts in the outer tropics during the early Holocene and late in the “Little Ice Age” period indicate that the LIA was indeed a global event.
The search for ways to reduce carbon emissions has led to government grant money for schemes ranging from promising to wacky. Recognizing that there is no currently viable replacement for fossil fuels, with the possible exception of nuclear power, the US and other countries with large coal deposits are desperately looking for ways to continue burning coal without incurring the wrath of nature or the IPCC. Clear evidence of the seriousness of this effort is evident in this week's special edition of Science, dedicated to carbon capture and sequestration (CCS) technology.