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Steve Brooks is an atmospheric scientist with the National Oceanic and Atmospheric Association. He lives in Oak Ridge, Tenn., and works at UT-Battelle. In this photo he is making atmospheric mercury measurements at the Greenland Environmental Observatory (GEOSummit) on the summit of the Greenland Ice Sheet in June 2008.
"Summit station sits atop 2 miles of ice and is the highest point north of the Arctic Circle," he wrote. "The site was established by the U.S. National Science Foundation and the Danish Commission for Scientific Research in Greenland to provide year-round, long-term measurements for monitoring and investigations of the Arctic environment.
"The average annual temperature at the station is -21F (-29C), with an all-time record low of -82F (-63C) and an all-time high of +34F (1C). The sun never sets at Summit from May until August."
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