Abstract. The CO, CO₂, and CH₄ mole fractions have been measured since 2002 at the Environmental Research Station Schneefernerhaus (ZSF), which is located approximately 300 m below the summit of Mount Zugspitze. Although the station is located remotely at an altitude of 2666 m a.s.l., local pollution events by snow blowers and snow groomers can be detected in the high temporal resolution time series of seconds or minutes. Therefore, a time-consuming flagging process, carried out manually by the station manager, is necessary. To examine local influences and the effectiveness of data flagging, a 290 m long intake line to the higher Zugspitz ridge was used to measure CO, CO₂ and CH₄ mole fractions at a potentially less polluted location between October 2018 and October 2020. The comparison of these two time series shows that the mountain ridge measurement is almost unaffected by local pollution. It also demonstrates that the influence of local pollution events on the Schneefernerhaus measurements is successfully removed by the station manager. Only a small deviation up to 0.24 ppm can be observed during the day between the CO₂ time series of Schneefernerhaus and the mountain ridge in winter, probably due to anthropogenic sources.

中文翻译：

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Schneefernerhaus 和 Zugspitze 山脊的大气 CO、CO2 和 CH4 测量值的比较

摘要。自 2002 年以来，环境研究站 Schneefernerhaus (ZSF) 测量了CO、CO ₂和 CH ₄摩尔分数，该站位于楚格峰山顶下方约 300 m 处。尽管该站位于海拔 2666 米的偏远地区，但可以在几秒或几分钟的高时间分辨率时间序列中检测到吹雪机和除雪机造成的局部污染事件。因此，需要由车站管理员手动执行耗时的标记过程。为了检查当地的影响和数据标记的有效性，一条 290 m 长的进水线通向 Zugspitz 山脊，用于测量 CO、CO ₂和 CH ₄2018 年 10 月至 2020 年 10 月之间可能污染较少的位置的摩尔分数。这两个时间序列的比较表明，山脊测量几乎不受当地污染的影响。它还表明，当地污染事件对 Schneefernerhaus 测量的影响已被车站经理成功消除。_{Schneefernerhaus 的 CO 2}时间序列与冬季山脊之间的白天仅能观察到高达 0.24 ppm 的小偏差，这可能是由于人为因素造成的。