Evaluation of Monitored Data of Atmospheric Methane over Long Term in an Air Monitoring Network.
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概要
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Methode are described to evaluate accuracy of monitored data of atmospheric methane st 15 air monitoring stations in the Okayama prefecture. Methane concentrations in 15: 00-16: 00 hour of day are lowest with the lowest deviations and similar to the background levels at the all stations. The monthly averaged concentrations of atmospheric methane in 15: 00-16: 00 hour may be used as standards to estimate systematic errors over long term at the monitoring stations.<BR>Deviation of methane concentrations from the average in this period may be regarded as a systematic error in the monitoring system.<BR>Difference between hourly atmospheric methane and ones at 15: 00-16: 00 houre could be used to observe local characterization of methane emission sources without influence of the wide spread trends of atmospheric methane concentration.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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