From: Yale Environment 360
Published February 17, 2010 05:58 PM

U.S. Climate Data Reliable

A study by scientists from the U.S.'s National Climatic Data Center refutes claims from climate change skeptics that data from U.S. weather stations was seriously flawed and exaggerated the rate of temperature increases.

The study, published in the Journal of Geophysical Research, says that U.S. weather stations may have actually slightly underestimated temperature increases. 


Anthony Watts, a former meteorologist who publishes the WattsUpWithThat blog, compiled photo evidence of what he considered poorly located weather stations across the U.S., including locations that could be influenced by artificial heat, such as those near parking lots and air conditioning systems.

Watts concluded that the U.S. records were unreliable, and thus called into question the data used in climate research worldwide. But scientists at the National Climatic Data Center suggest that the data collected at the stations Watts classified as poor were actually more likely to be cooler since they generally used sophisticated measuring equipment known as a Maximum-Minimum Temperature System (MMTS), which tends to be biased toward marginally cooler readings.

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