No, I haven't checked low or mean temperatures, and I do agree that spikes aren't the best indicator. And while they may not be the best indicator, that doesn't mean they are irrelevant either.



I was just trying to point out how articles and activists stating that heat waves that break old records are in indication of global warming is simply not true. (You and Pulatus both seem to agree with me on this, based on your statements.) My original post was made because of these "alarmist" statements that don't hold up to scrutiny.



As for "Another question that pops up is that the greenhouse effect aka Global warming is supposed to be a product of the industrial revolution. To prove or (disprove) one would really have to just assess data from the last 175 years



I agree completely, and this has been looked at in detail. The interesting thing is that vast majority of warming (from ground based records) during this period occurred prior to 1940, and very little has occurred since then. Also, most green house gasses have been produced since 1940 and very little before then. This "non-correlation" between greenhouse gasses and temps. seems to indicate that we are not the cause, if it is happening.--or maybe it isn't greenhouse gasses at all?



However, the Urban sprawl theory of biased temperature measurements does explain these readings quite well.



Rodney

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