
Perhaps we’ll be enjoying these scenes for a long time yet…
Are concerns over man-made global warming (i.e., anthropogenic global climate change) overblown? So says this January 27 opinion piece in the Wall Street Journal online, written by sixteen eminent physical scientists. They argue that predictive computer models have exaggerated the potential effects of continued emissions of carbon dioxide, and point to the documented halt (or pause, depending on your perspective) in rising global temperatures over the last decade or so as evidence supporting their position.
Not to be outdone, the UK Daily Mail waded into the global warming debate with two seemingly contradictory articles: First, theorizing that global cooling, not warming, may be a more immediate concern on the global temperature front, based on solar energy cycles – and then, on the same day, reporting that the British government’s national risk assessment on climate change warns that increasing temperatures will lead to “major increases in flooding, heatwaves and water shortages that could kill thousands of people a year.”
What should we make of the current state of anthropogenic climate change science?
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Starting in January 2011, Clean Air Act permitting requirements for GHGs will apply to large facilities that are already obtaining Clean Air Act permits for other pollutants. Those facilities will be required to include GHGs in their permit if they increase their GHG emissions by 75,000 tons per year (tpy). In July 2011, permitting requirements will expand to cover all new facilities with GHG emissions of at least 100,000 tpy and modifications at existing facilities that would increase GHG emissions by at least 75,000 tpy. The permits must demonstrate the use of best available control technologies to minimize GHG emission increases when facilities are constructed or significantly modified. EPA estimates approximately 900 additional permitting actions covering new sources and modifications to existing sources would be subject to review each year. In addition, 550 sources will need to obtain operating permits for the first time because of their GHG emissions.