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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: Brumar89 who wrote (11215)	7/13/2009 5:27:55 PM
From: RetiredNow	Read Replies (2) \| Respond to of 86355

He didn't talk about the 10 year trend. He talked about one cool summer. If you look at the 150 year trend, the last 10 years are still record hot years, even though they are cooler than the preceding 10 years. The last 10 years are still above the temperature mean of the last 150 years, which means that the upward trend is still intact. Statisticians will tell you that a rule of thumb to look for on whether a trend line is broken to the downside is if you see 6 or more data points below the mean. As you can see in the chart below, the last 10 years, although maybe cooler than the previous 10 years, are still well above the mean for the last 150 years. There wasn't a single data point below the mean, which tells me that we have a 99% certainty that the upward trend is still intact.