Fox News is reviving accusations that NASA's peer-reviewed adjustments to temperature data are an attempt to "fak[e]" global warming, a claim that even a climate "skeptic" threw cold water on.
Tony Heller, a birther who criticizes climate science under the pseudonym "Steven Goddard," wrote a blog post that claimed "NASA cooled 1934 and warmed 1998, to make 1998 the hottest year in US history instead of 1934." After the Drudge Report promoted a report of this allegation by the conservative British newspaper The Telegraph, conservative media from Breitbart to The Washington Times claimed the data was "fabricated" or "faked." On June 24, Fox & Friends picked it up, claiming that "the U.S. has actually been cooling since the 1930s" but scientists had "faked the numbers":
However, the libertarian magazine Reason noted that even climate "skeptic" blogger Anthony Watts said that Goddard made "major errors in his analysis" and criticized the implication that "numbers are being plucked out of thin air in a nefarious way."
In fact, the National Climatic Data Center (NCDC) and NASA, which both maintain temperature records that use slightly different methods but show close agreement, have publicly documented the peer-reviewed adjustments they make to raw data. NCDC states that the "most important bias in the U.S. temperature record occurred with the systematic change in observing times from the afternoon, when it is warm, to morning, when it is cooler," and so it must correct this cool bias as well as other biases that, for example, result from moving temperature stations.
NASA's data shows that the nation has not been "cooling" since the 1930s, with several years, including 2012, ranking hotter than 1934 in the continental United States, along with a long-term warming trend. And while The Sean Hannity Show claimed that this shows the "Earth has been cooling," the continental United States makes up less than 2 percent of the Earth's surface -- global surface temperatures have increased significantly.
Anonymous hackers recently released another batch of emails taken from a climate research group at the University of East Anglia in 2009, along with a document containing numbered excerpts of purportedly incriminating material. Many of these selections have been cropped in a way that completely distorts their meaning, but they were nonetheless repeated by conservative media outlets who believe climate change is a "hoax" and a "conspiracy."
In response to the suspension of federal scientist Charles Monnett, who authored a 2006 article documenting polar bear deaths, conservative media have claimed that the case exposes "the global warming fraud" and that polar bears are not threatened by climate change. In fact, extensive research establishes that polar bears are vulnerable to extinction due to decreasing sea ice, and human-induced global warming is supported by a robust body of evidence independent of any polar bear studies.