Monday, March 8, 2010

IPCC strengthens case that climate change is man made


USA Today is reporting that the IPCC (Intergovernmental Panel on Climate Change) has issued an interim report on March 1, reaffirming that human activity is the cause of climate change and that some of it is irreversible regardless of what is done now.

USA Today has a summary page (by Weather Guys Bob Swanson and Doyle Rice) of report highlights here. It refers to the “Plenary Approved Report” PDF, but when clicked we seem to migrate only to the main IPCC page, with the home page for the working group, here.

A key finding from the summary is “For the next two decades a warming of about 0.2°C per decade is projected for a range of emission scenarios. Even if the concentrations of all greenhouse gases and aerosols had been kept constant at year 2000 levels, a further warming of about 0.1°C per decade would be expected.” In the best case scenario, then global temperature would rise about 2.5 deg F over the next decade.

Nevertheless, the brutal storms on the East Coast this February were probably the result of the “Arctic Oscillation” forcing cold air south, and El Nino, leading to a southern track for low pressure systems.

The IPCC is preparing for a new formal report soon (as evident on the website), and is forceful in its position despite the naysayer claims recently about email scams in some climate change organizations overseas (plenty of those stories still show up in search engines, such as this one by Beth Daly (link), title "After errors, global warming gets a cold shoulder: Critics point to mistakes, e-mail theft to raise doubts on research; poll shows less public concern" at Boston.com.

The IPCC news story was flashed to users of Dell/MSN and AOL Sunday night. It follows on a sensational story last week on possible methane release.

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