Data set on the accurate continuous observations of atmospheric CO2, CH4 dry mole fractions in the western Taimyr Peninsula (Siberia) for the period 09.2018 - 01.2021

Atmospheric observations of sources and sinks of carbon dioxide (CO2) and methane (CH4) in the pan-Arctic domain are highly sporadic, limiting our understanding of carbon turnover in this climatically sensitive environment and a fate of enormous carbon reservoirs buried in permafrost. Particular gaps apply to the arctic latitudes of Siberia, covered by the vast tundra ecosystems underlain by permafrost, where only several atmospheric sites are available. The data set contains the time series of the quality controlled (QC) hourly afternoon (1-4 pm of local time (GMT+7)) averages of atmospheric CO2 and CH4 dry mole fractions measured with a CRDS analyzer Picarro G2301-f at 35 m a.s.l. in the western Taimyr Peninsula (Siberia). Meteorological variables (air temperature, relative humidity, precipitation amount, wind) for the same period of observations permit screening of trace gas data series. The data set covers the period from September 2018 to January 2021 with a nearly 4-month break (November 13, 2018 - February 22, 2019) due to technical failure when both trace gas and meteorological records are missing.

在泛北极地区，对二氧化碳（CO2）和甲烷（CH4）的源汇大气观测极为零散，这限制了我们对这一气候敏感环境中碳循环的理解，以及埋藏于永冻层中巨大碳库的命运。特别是在西伯利亚的北极纬度地区，这一地区被广袤的永冻层下伏的苔原生态系统所覆盖，仅有少数大气观测站。该数据集包含了使用CRDS分析仪Picarro G2301-f在海拔35米处测量的、质量控制（QC）的每日午后（当地时间下午1-4点，GMT+7）大气CO2和CH4干燥摩尔分数的时间序列。同期气象变量（空气温度、相对湿度、降水量、风速）的观测数据允许筛选微气体数据序列。该数据集覆盖了从2018年9月到2021年1月的时期，由于技术故障导致数据缺失，存在近4个月的间断（2018年11月13日至2019年2月22日）。