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A one-year time series of atmospheric CO 2 measurements from Bern, Switzerland, is presented. O 2 /N 2 and Ar/N 2 ratios as well as stable carbon and oxygen isotopes of CO 2 and δ 29 N 2 , δ 34 O 2 and δ 36 Ar were measured periodically during a one year period. Additionally, the 222 Rn activity was measured during three months in the winter 2004. Using the(More)
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