瓦里关大气本底观象台CO_2、CH_4观测过程的质量控制

QUALITY CONTROL OF CO2 AND CH4 MEASUREMENT DATA ON CHINA GLOBAL ATMOSPHERE WATCH BASELINE OBSERVATORY

以中国大气本底基准观象台的温室气体(CO2、CH4)观测仪器为例,从仪器运行的稳定性和各级标准气体标定两个方面介绍了温室气体观测数据的质量控制方法。结果表明,瓦里关大气本底台的CO2、CH4观测仪器运行稳定,观测数据具有很高的精确度和可信度。经过严格质量控制的温室气体实时测量数据报送到世界气象组织下属的温室气体数据中心,成为各国科学家分析欧亚大陆温室气体本底浓度的主要依据。

Taken greenhouse gases (CO2 and CH2) measurement instruments (Non-Dispersive In fra-Red Gas Analyzer and Gas Chromatograph) as examples, the quality control method of raw measurement data was introduced. Keeping the stability of instrument and measuring all level of standard gases periodically are two mainly methods to obtain measurement data with high quality. Results indicate that NDIR and GC system at Mt Waliguan Station are all running in good condition and the greenhouse gases measurement data are both with high precision and creditability. These data with strict quality control are reported to World Data Center for Greenhouse Gases and were used to analyze the baseline of greenhouse gases of Eurasia.