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NOAA quietly changes past climate data

Global warming supporters have been accused in the past of doctoring statistics to bolster their claims. Now the National Oceanic and Atmospheric Administration has been caught doing the opposite, altering data to make the past appear warmer and the present cooler.

The summer of 2012 was a scorcher. More than half of the country experienced drought and wildfires as temperatures soared. According to the NOAA’s National Climatic Data Center, “average temperature for the contiguous U.S. during July was 77.6°F, 3.3°F above the 20th century average, marking the warmest July and all-time warmest month on record for the nation in a period of record that dates back to 1895.” The previous record for warmest July had been set in 1936, when the average U.S. temperature was 77.4°F.

The statement which announces the new record is still available on the NOAA website. However, climate blogger Anthony Watts discovered over the weekend that the NOAA had quietly altered data in “Climate at a Glance” graphs in order to make keep 1936 in the record setting position. The new graphs raised the average temperature for the Dust Bowl summer so that it remained warmer than 2012.

Watts criticized the NOAA, saying that, “You can’t get any clearer proof of NOAA adjusting past temperatures. This isn’t just some issue with gridding, or anomalies, or method, it is about NOAA not being able to present historical climate information of the United States accurately.”

He continued, “In one report they give one number, and in another they give a different one with no explanation to the public as to why.” “This is not acceptable. It is not being honest with the public. It is not scientific. It violates the Data Quality Act.”


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