Photo credit: NASA – AfloMore

From Popular Mechanics

Getting accurate data is a fundamental part of the scientific process. That process, in the case of some data sets, can have national and global ramifications. That’s why NASA studies its own research on climate change.

Analyzing data going back to the 1880s, NASA now has the good (or bad, depending on how you view things) news that its warnings about man-made rising temperatures are extremely accurate-within 1/20th of a degree Celsius, in fact.

The focus of NASA’s study was the accuracy of what’s known as the GISS surface Temperature Analysis, or GISTEMP for short. The GISTEMP is compiled by NASA’s Goddard Institute for Space Science Studies (GISS), a laboratory in the agency’s Earth Sciences division based at Columbia University

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