What is happening with USHCN temperature data?

Over the weekend, what started as an argument among global warming skeptics became a dramatic indictment of temperature reporting from the United States Historic Climate Network.

Anthony Watts (Watts Up With That) and Judith Curry (Climate Etc.) provide the details on Steve Goddard’s initial attempt to claim that a large swath of temperature “raw” data was in fact estimations. Watts is particularly self-aware in acknowledging why he had trouble with Goddard’s assertions, while Curry ties it to the underlying data problems.

Both then get to the meat of the matter: Paul Homewood’s revelation that data in not one, but two locations were “adjusted” to create a warming trend of 1-2 degrees that never shows up in the actual data.

Meanwhile, Watts also reveals this stunner: as many as one in four stations “reporting” weather data are in fact shut down, and “reporting” estimated figures derived from neighboring – and in theory still operating – stations.

Curry – who does not consider herself a skeptic on global warming, but is rare in that she does not simply dismiss those who are – summed up with this is so important:

This incident is another one that challenges traditional notions of expertise. From a recent speech by President Obama:

“I mean, I’m not a scientist either, but I’ve got this guy, John Holdren, he’s a scientist,” Obama added to laughter. “I’ve got a bunch of scientists at NASA and I’ve got a bunch of scientists at EPA.”

Who all rely on the data prepared by his bunch of scientists at NOAA.

…and if that data is problematic, all of those scientists have a serious problem.

Cross-posted to the right-wing liberal


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