"The heatwave index is what the article claimed ..."
Oh the blinkers are strong with this one.
1. It's not an article. It's a US National Research Program Special Report on Climate Change, put together by NOAA, NASA, the US Army Corps of Engineers, multiple Universities, the Oak Ridge and Lawrence Berkeley National Laboratories, the Department of Energy Office of Science, the Naval Post Graduate School and other authors. It's from the fourth official US National Climate Assessment.
2. It does not solely make a "claim" regarding the heat wave index. It covered a rather large amount of scientific information on evidence of climate change from multiple areas of research. Unfortunately, well, typically, 99% of which you have ignored while you went off on your little quibble.
" ... and they are plainly wrong!"
3. Except that it's you who is wrong. The statement made in bellcurve's quote, one of only two sentences on heat waves in the 26 page executive summary, is "heatwaves have become more frequent in the United States since the 1960s". That is an entirely accurate statement, as your own chart shows.
Now, I agree with you that, in the context of the 1930's dust bowl heat waves, that that recent trend is not very significant. But that is also what the Special Report makes clear elsewhere in the Executive Summary. They don't however let that distract them from the overwhelming evidence of climate change overall.
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So keep the blinkers on regarding the bigger picture. Keep finding small issues to quibble over. And keep claiming conspiracy theories about doctoring data etc by tens of thousands of international scientists from hundreds of institutions. It seems to be what you want to do, and over a decade of responding to the garbage you keep posting here it seems clear we aren't going to convince you otherwise. That's your problem, not ours.
