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Atmospheric O 2 , CO 2 and δ 13 C observations from the remote sites Jungfraujoch, Switzerland, and Puy de Dôme, France
Author(s) -
Sturm Patrick,
Leuenberger Markus,
Schmidt Martina
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl023304
Subject(s) - altitude (triangle) , atmospheric sciences , isotopes of carbon , δ13c , environmental science , dome (geology) , stable isotope ratio , isotope , geology , physics , geomorphology , geometry , mathematics , quantum mechanics
First atmospheric O 2 , CO 2 and δ 13 C flask measurements from the high altitude site Jungfraujoch (JFJ), Switzerland, as well as from the mountain site Puy de Dôme (PUY), France are presented. The four‐year records of JFJ and the three‐year records of PUY show distinct seasonal cycles and superimposed long‐term trends in the measured parameters. The mean peak‐to‐peak amplitudes of the respective seasonal cycles at JFJ are 79 per meg for O 2 /N 2 , 11 ppm for CO 2 , and 0.45 ‰ for δ 13 C. At PUY the seasonal variations are about two times larger than at JFJ. The spring time CO 2 maximum at PUY appears in early march, whereas at JFJ it shows up 1 to 2 months later. The O 2 :CO 2 correlation gives at both sites slopes of about −2 mol O 2 /mol CO 2 . Stable carbon isotope ratios of source CO 2 show depleted values in wintertime and isotopically enriched values in summer.