NYT: "The study is the latest in a growing body of research termed “rapid attribution” analysis, which aims to establish if there is a link between climate change and specific extreme events like heat waves, heavy rain storms and flooding. The goal is to publicize any climate connection quickly, in part to thwart climate denialists who might claim that global warming had no impact on a particular event. The study, which took a little more than a week, is not yet peer-reviewed or published in a scientific journal.
Disturbingly, some scientists dependent on global warming funding also suggest only global warming explains that heatwave. However, they ignore the fact that the heatwave’s clear skies reduce the local greenhouse effect driven by water vapor. Additionally, global warming can’t explain cold events such as Europe’s record cold just 2 months earlier. So, beware! The media is promoting misinformation.
Koonin: "Practitioners argue that event attribution studies are the best climate science can do in terms of connecting weather to changes in climate. But as a physical scientist, I’m appalled that such studies are given credence, much less media coverage. A hallmark of science is that conclusions get tested against observations. But that’s virtually impossible for weather attribution studies. Its like a spiritual adviser who claims he influence helped you win the lottery — after you’ve already won it.
The bottom line is that the science says that most extreme weather events show no long-term trends that can be attributed to human influences on the climate. (What models might project for future extremes is quite a different matter, though its often conflated with what the observational record shows.) Yet the popular perception that extreme events are becoming more common and more severe remains."