Michael Mann claims that a new warmist study is important because it "formalizes what many scientists have been sensing as a gut instinct"

Borenstein:  Greenhouse gases make high temps hotter in China

WASHINGTON (AP) — China, the world's largest producer of carbon dioxide, is directly feeling the man-made heat of global warming, scientists conclude in the first study to link the burning of fossil fuels to one country's rise in its daily temperature spikes.

China emits more of the greenhouse gas than the next two biggest carbon polluters — the U.S. and India — combined. And its emissions keep soaring by about 10 percent per year.

While other studies have linked averaged-out temperature increases in China and other countries to greenhouse gases, this research is the first to link the warmer daily hottest and coldest readings, or spikes.
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The study by Chinese and Canadian researchers found that just because of greenhouse gases, daytime highs rose 0.9 degree Celsius (1.7 degrees Fahrenheit) in the 46 years up to 2007. At night it was even worse: Because of greenhouse gases, the daily lows went up about 1.7 degrees Celsius (3 degrees Fahrenheit).
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"The study is important because it formalizes what many scientists have been sensing as a gut instinct: that the increase in extreme heat that we've witnessed in recent decades, and especially in recent years, really cannot be dismissed as the vagaries of weather," said Pennsylvania State University climate scientist Michael Mann.