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US releases assessment of climate impacts - June 16, 2009

The White House opened its gates to a gaggle of science reporters Tuesday as administration officials and scientists released a much-anticipated assessment of global warming's impacts on the United States. The message - global warming is upon us - was delivered clearly and forcefully, several times over.

Hardly a novel finding, but, in a sign of the times, the audience proved receptive. The report echoed over the wires (see the Washington Post, New York Times) and filled up email in-boxes as environmental groups and politicians put their seal on the document.

President Barack Obama's chief science adviser, John Holdren, called the report "the most up-to-date, comprehensive and authoritative assessment" of global warming in the United States. The document focuses on regional impacts, he added, "talking about climate where people actually experience it: in their back yards."

At 196 pages, the document represents the final installment in a series of 21 assessments produced under the auspices of the Global Change Research Program, itself part of the US Climate Change Science Program. An earlier version of the document attracted some criticism last year, in part because it was released for public comment before the rest of the assessments were complete, but everything worked out in due course.

The report incorporates the work of the Intergovernmental Panel on Climate Change as well as more recent studies regarding key issues like rising sea levels. Indeed, many scientists say the IPCC's fourth assessment underestimates the danger of rising seas - simply because it's out of date. On this particular issue, the report's co-chair, Jerry Melillo, a biologist at the Marine Biological Laboratory in Woods Hole, Massachusetts, says the team projected a potential sea-level rise of up 3 or 4 feet by the end of the century - enough to wipe out the southern tip of Florida.

Speakers at Tuesday's press conference were careful to stick to the science, despite repeated attempts by journalists to draw them out. Holdren, for instance, declined to weight in on whether politicians who read the report would be wise to vote in favor of climate change legislation that might come up for a vote in the House of Representatives in the coming weeks. Nonetheless, the message rang true.

"Climate change is happening now," said Jane Lubchenco, who heads the National Oceanic and Atmospheric Administration, the lead agency on the report. Climate trends are worrisome, indeed, she said, but it's not too late to act. "Trends are not destiny."

Comments

That's funny, in my "backyard" the temperature has been close to 20F below average so far for June. Today is our first 80F day in June. This same week last year it was over 100.

No matter. Wouldn't be the first or last time Nature rushed to hype complete junkscience. Dr. Kary Mullis, Nobel Prize winner and the father of modern genomics tells an interesting tale in his autobiography. Seems that in his college days, fully loaded on LSD, he completely made up an article about the nature of time and space and submitted it to Nature. Not only did Nature print it, but they crowned him one of the up and coming intellects of the half century. Kary Mullis isn't even a phycisist or astronomer. He openly admits to anyone that asks that he made up every word.

When the talking heads of the world come together to praise an idea, you can be almost certain its total bull.

It is proven that the polar ice caps are melting. Have the ocean temperatures reflected lower numbers? Is this causing us in the Northeast US to experience colder weather? I was reading somewhere that those of us in the Northeast may experience temperatures that are way below normal over the next 10 years due to the ice caps melting and that the temperature will dramatically raise after a period of time. Is there scientific data to support this theory?

I found your article to be very interesting.

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