Dan's Outside

I go, I see, I do, I walk, I think, I like…

Bad News for Climate Change Deniers

Although the preponderance of evidence clearly points to warming global temperatures in recent years, there are those who prefer not to accept the evidence. One thread that got a lot of coverage during the past few years was the claim that poor siting of weather stations used to acquire long term temperature data had biased the trend towards an imaginary increase in average temperatures.

It turns out that the deniers had a valid point about the siting of the measurement equipment. Quite a few stations were “poorly sited” – too close to buildings, near vents, next to parking lots, etc. All of these factors could throw off measurements and create faulty data.

So, were the deniers correct that the evidence of warming from these stations was the result of poor siting?

It turns out that they had it exactly backwards. Careful studies comparing the results from the poorly sited stations to the results from properly sited stations show that the poorly sited stations were actually biased to produce incorrectly COOLER readings than the correctly sited stations. To state it another way, the deniers were correct in noting that measurement sites were not optimally placed but when the biases from incorrect sites are accounted for it turns out that the rising temperature trend is confirmed… and perhaps slightly more significant than scientists first believed.

Not that any of this will given the deniers a moments pause…

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January 25, 2010 Posted by | Commentary, Environment | , , , , , , | 1 Comment

Snow? Yeah!

Looks like snow is what we may get in the Sierra this weekend. While it isn’t unusual to get a few dustings in late September and the beginning of October, this storm looks a bit more robust that usual.

If all goes as planned, I may be able to offer a first-person report early next week.

October 2, 2008 Posted by | Sierra Nevada | , , , , , , , | 1 Comment

   

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