Temporal variations of the carbon isotopic ratio of atmospheric methane observed at Ny Ålesund, Svalbard from 1996 to 2004
作者： Shinji Morimoto , Shuji Aoki , Takakiyo Nakazawa , Takashi Yamanouchi
DOI: 10.1029/2005GL024648
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摘要: Systematic observations of the atmospheric CH4 mole fraction and its carbon isotope ratio δ 13 CH 4 have been carried out at Ny Alesund, Svalbard (78°55'N, 11°56'E) since 1991 1996, respectively. The showed clear seasonal cycles with respective peak-to-peak amplitudes 48 ppb 0.42%o. By comparing anomalies in increase rate those 4, it is suggested that cause rapid observed Alesund 1998 could be attributable to an enhanced release from wetland biomass burning.
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