Quote:
Originally Posted by Izzle
Am I reading the data wrong? Figure 1 shows the "Heat Wave Index". I am not sure how that is calculated.
Figure 2 shows the hot daily highs and the hot daily lows. It looks like the 30s were hot, but it also appears that the general trend is upwards and that since the 70s its been getting progressively warmer.
Figure 6 is interesting. It shows the percentage of weather stations that had a record high in a decade. Again clear trend is upwards with the 2000s being the highest. Unfortunately, they don't show the same for the 1930s.
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That's how I read it; the 30s had by the most period of time or areas under a heat wave condition, and the 30s had numerous unusually daily highs that were only matched by the early part of this decade.
As for Figure 6, as you say it only starts from 1950 and doesn't account for the values of the 1930s.