Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Random variations are still too large for climate models

3:00 pm

The uncertainty of science: a paper published today in Geophysical Research Letters has concluded that the the long term random variations of the climate, sometimes lasting as long as three or four decades, are large enough to hide any actual changes to the climate. In the quote from the abstract below, the term “random walk” is jargon for a long term random fluctuation having nothing to do with climate change.

This result indicates that the shorter records may not totally capture the random variability of climate relevant on the time scale of civilizations, for which the random walk length is likely to be about 30 years. For this random walk length, the observed standard deviations of maximum temperature and minimum temperature yield respective expected maximum excursions on land of 1.4 and 2.3°C and over the ocean of 0.5 and 0.7°C, which are substantial fractions of the global warming signal.

In other words, it might simply be too soon to be making predictions about the climate, based upon the presently available data.

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Putting ISS to use

8:50 pm

Putting ISS to use. Key quote:

Under consideration is using the entire station and its six-person crew as an analog for a deep-space human exploration vehicle en route to Mars. An internal team is studying the feasibility and value of such an exercise in the summer of 2012. “We might start with a small window, like a 30-day window, with actual time delays with what we’d expect with a Martian communications system,” Gerstenmaier says. “We may freeze our consumables on station, in the sense of saying that we’ve started our voyage to Mars, and see how well we do in our predictions.”

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Bill would set aside $60 million to develop in-vehicle alcohol detectors

5:15 pm

There are so many ways this is wrong and illegal I can’t begin to count them: Senators Tom Udall (D-New Mexico) and Bob Corker (R-Tennessee) want to set aside $60 million to develop in-vehicle alcohol detectors that could be installed in all cars. You would have to use it before your car would start.

Putting aside the constitutional issues, isn’t there that federal debt to worry about?

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Why public sector unions are losing – and can’t stop it if they tried

2:31 pm

Why public sector unions are losing – and can’t stop it if they tried. Key quote:

This is why the Wisconsin Democratic Senators were in the minority in the first place. There is no reason for ninety percent of the population to rally for benefits that accrue to only ten percent of the workforce when they themselves are cut out of those benefits. So Wisconsin Democrats found themselves a powerless minority, whose only recourse was to run and…hope that tomorrow a new world would dawn. Such hopes are foolishness. And the Wisconsin Republican Senators showed them exactly why that is so. [emphasis in original]

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