83 F. average high on July 28.
89 F. high on July 28, 2011.
3-4 days at or above 90 this week. Hottest days: Monday, again Wednesday, when mid-90s are possible close to home.
Friday: wettest day of the week with a good chance of heavy showers/T-storms.
Relief: possible next weekend as a real Canadian cool front surges south of the border. Highs may hold in the 70s across much of Minnesota.
- excerpt of a forthcoming New York Times Op-Ed from former climate skeptic, Richard Muller, lead author of the "BEST" (Berkeley Earth Surface Temperature) project. Details at The New York Times below.
"A couple of days ago, you mentioned that you expected highs in the low 70s by the end of next week. Now you're predicting 90s! What's responsible for the huge swing in the forecast? Is it beyond reason to hope for an early end to this summer from hell? Those of use without air conditioning are really suffering."
TODAY: AM shower or T-shower possible. PM sun. Dew point: 66. Winds: SE 10. High: 87
SUNDAY NIGHT: Partly cloudy and dry. Low: 68
Our results show that the average temperature of the earth’s land has risen by two and a half degrees Fahrenheit over the past 250 years, including an increase of one and a half degrees over the most recent 50 years. Moreover, it appears likely that essentially all of this increase results from the human emission of greenhouse gases.
These findings are stronger than those of the Intergovernmental Panel on Climate Change, the United Nations group that defines the scientific and diplomatic consensus on global warming."
Graphic credit above: "The decadal land-surface average temperature using a 10-year moving average of surface temperatures over land. Anomalies are relative to the Jan 1950 – December 1979 mean. The grey band indicates 95% statistical and spatial uncertainty interval.” A Koch-funded reanalysis of 1.6 billion temperature reports finds that “essentially all of this increase results from the human emission of greenhouse gases.”
Climate Change Could Erode Ozone Layer Over U.S. Here's an excerpt from a blog at smithsonian.com: "For the past 25 years, it seemed that we’d pretty much solved the ozone problem. In the 1970s and 80s, people around the world grew increasingly alarmed as research revealed that chemicals we were producing—such as CFCs, used in refrigeration— had started destroying the crucial ozone layer, high up in the atmopshere, that protects us from the sun’s harmful UV radiation. In response, world governments came together to sign the Montreal Protocol in 1987, which phased out the production of ozone-depleting chemicals. The concentration of these chemicals in the atmosphere leveled off within a decade. Yesterday, though, Harvard scientists hit us with some bad news: It looks as if climate change could actually cause the depletion of the ozone layer to resume on a wide scale, with grim implications for the United States."
Image credit above: "Climate change could produce an ozone hole over the U.S. similar to the one observed over Antarctica, above, in 2006." Image via NASA.
Photo credit above: "Rebecca Phillips, plant pathologist at ARS-Northern Great Plains Research Laboratory, works out in the fields in Australia studying carbon fluxes with other scientists."