1. CLIMATE CHANGE: HOTTEST ARCTIC SUMMER IN 2,000 YEARS.
A major study published in today’s Science marks a seminal advance in Sediments from Arctic lakes were used to compile proxy for the last 2000 years. Arctic summer temperature declined for thousands of years due to a shift in Earth’s orbit. Although the orbital shift has been going on for 8000 years and will continue, an increase in greenhouse gases produced by the overpowered the cooling trend. The warming has been more rapid since about 1950. Moreover, thawing permafrost will release methane into the atmosphere, accelerating warming. The latest study comes just months after scientists at NOAA warned that within the next 30 years Arctic sea ice could vanish completely during the summer; that will further accelerate warming due to decline in reflective ice cover.
2. CLIMATE SOLUTIONS: IN THE LONG RUN, THERE IS ONLY ONE.
Even as the study on Arctic warming was making its way into print, a group at the controversial Center proposed a quick geo-engineered solution to. The group is headed by statistician Bjorn Lomborg, a follower of the late Julian Simon, the libertarian economist at the University of Maryland, who believed there are no limits. Lomborg proposes puffing lots of white clouds into the atmosphere to reflect sunlight. It would be the perfect job for Lomborg, who has been puffing clouds of obscurantism since he wrote
(Cambridge, 2001). Presumably we should just keep puffing out bigger white clouds to compensate for the ever growing population.
White clouds of vapor indeed. Park is a great fog-cutter.
For example, there is this note from his August 28 edition:
3. SCOPES REDUX: LOBBYISTS MAY BE NOSTALGIC FOR DAYTON.
Newspapers around the country have carried the story of the US Chamber of Commerce, the top US lobbying group, calling for the EPA to hold a Scopes- like hearing on the evidence that climate change is man-made. The EPA dismisses such a stunt as a “waste of time,” but that’s the least of its problems. Having lost the contest over scientific peer review of journal articles, the global warming deniers are accused have cooked up a Hollywood stunt.
Global warming deniers are steamed, and may just stew.
- “Recent Warming Reverses Long-Term Arctic Cooling,” Science 4 September 2009: Vol. 325. no. 5945, pp. 1236 – 1239 DOI: 10.1126/science.1173983 (abstract; full text available with subscription)
Darrell S. Kaufman,1,* David P. Schneider,2 Nicholas P. McKay,3 Caspar M. Ammann,2 Raymond S. Bradley,4 Keith R. Briffa,5 Gifford H. Miller,6 Bette L. Otto-Bliesner,2 Jonathan T. Overpeck,3 Bo M. Vinther,7 Arctic Lakes 2k Project Members
“The temperature history of the first millennium C.E. is sparsely documented, especially in the Arctic. We present a synthesis of decadally resolved proxy temperature records from poleward of 60°N covering the past 2000 years, which indicates that a pervasive cooling in progress 2000 years ago continued through the Middle Ages and into the Little Ice Age. A 2000-year transient climate simulation with the Community Climate System Model shows the same temperature sensitivity to changes in insolation as does our proxy reconstruction, supporting the inference that this long-term trend was caused by the steady orbitally driven reduction in summer insolation. The cooling trend was reversed during the 20th century, with four of the five warmest decades of our 2000-year-long reconstruction occurring between 1950 and 2000.”
- Scientific American.com article
- Bloomberg, “Arctic’s 2000-year cooling ended with coal burning, ice shows”
- Arizona Republic, “Arctic temperatures hitting 2000-year high“
- Political end: Climate change skeptic/denialist claims the study is wrong at the recent end (what about the previous 1,900 years?)