6　小　结

1.在AES?5个月的组装调试结果表明，GC系统具有良好的线性、灵敏度、精度和准确度.

2.在瓦里关本底台一年多时间的业务运行和标定情况表明，系统具有高自动化的操作性能和严格的质量控制，其设计符合WMO全球大气本底测量的要求.

3.GC法观测数据与FLASK法和NDIR法结果的对比表明，用这3种方法在瓦里关本底台获得的CH4和CO2数据都有较高的质量，且具有国际可比性.

4.瓦里关山大气CH4月平均浓度基本上在1780—1840ppb的范围内波动，随季节变化幅度不大.

5.瓦里关山大气CO2浓度的月平均值在355—365ppm范围内，其季节变化比较明显，夏末秋初降至最低，冬春季达最高值，浓度变化范围约10ppm.

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