Abstract. We present analyses of a 12-year time series of continuous atmospheric measurements of O₂ and CO₂ at the Weybourne Atmospheric Observatory in the United Kingdom. These measurements are combined into the term Atmospheric Potential Oxygen (APO), a tracer that is conservative with respect to terrestrial biosphere processes. The CO₂, O₂ and APO datasets discussed are hourly averages between May 2010 and December 2021. We include details of our measurement system and calibration procedures, and describe the main long-term and seasonal features of the time series. The 2-minute repeatability of the measurement system is approximately ±3 per meg for O₂ and approximately ±0.005 ppm for CO₂. The time series shows average long-term trends of 2.40 ppm yr^-1 (2.38 to 2.42) for CO₂, -24.0 per meg yr^-1 for O₂ (-24.3 to -23.8) and -11.4 per meg yr^-1 (-11.7 to -11.3) for APO, over the 12-year period. The average seasonal cycle peak-to-peak amplitudes are 16 ppm for CO₂, 134 per meg for O₂, and 68 per meg for APO. The diurnal cycles of CO₂ and O₂ vary considerably between seasons. The datasets are publicly available at https://doi.org/10.18160/Z0GF-MCWH (Adcock et al., 2023) and have many current and potential scientific applications in constraining carbon cycle processes, such as investigating air-sea exchange of CO₂ and O₂, and top-down quantification of fossil fuel CO₂.

中文翻译：

---

来自英国韦伯恩大气观测站的 12 年连续大气 O2、CO2 和 APO 数据

摘要。我们对英国韦伯恩大气观测站对 O ₂和 CO ₂连续大气测量的 12 年时间序列进行了分析。这些测量值组合成术语大气势氧 (APO)，这是一种相对于陆地生物圈过程而言保守的示踪剂。所讨论的CO ₂、O ₂和 APO 数据集是 2010 年 5 月至 2021 年 12 月的每小时平均值。我们包括了我们的测量系统和校准程序的详细信息，并描述了时间序列的主要长期和季节性特征。_{测量系统的 2 分钟重复性对于 O 2}约为 ±3 每 mg ，对于 CO 约为 ±0.005 ppm₂ . 时间序列显示CO _{2为 2.40 ppm yr} ^-1 （2.38 至 2.42）， O ₂为-24.0 ppm yr ^-1（-24.3 至 -23.8）和 -11.4 ppm yr ^-1（ -11.7 至 -11.3) 对于 APO，在 12 年期间。_{CO 2}的平均季节性循环峰峰值振幅为 16 ppm ，O ₂为 134 ppm ，APO 为 68 ppm。_{CO 2}和O ₂的昼夜循环季节之间差异很大。这些数据集可在 https://doi.org/10.18160/Z0GF-MCWH（Adcock 等人，2023 年）上公开获取，并且在限制碳循环过程方面具有许多当前和潜在的科学应用，例如研究 CO 的海气交换₂和 O _{2 ，​​以及化石燃料 CO 2}的自上而下量化。