NOAA's atmospheric and space observatory, at 3400 meters on the northeast flank of Mauna Loa volcano in Hawaii. The observatory consists of 10 buildings from which up to 250 different atmospheric parameters are measured. The two domes are part of the solar observation systems here. In forground is a part of a weather station. Measuring carbon dioxide at this location begun in 1958 , and the resulting "Keeling Curve" showing the yearly seasonal fluctuation in CO2 and the rising rate of increase y
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