Volume concentration variation and law of greenhouse gas methane
文献类型：EI期刊论文
| 作者 | Liao Shunbao |
| 发表日期 | 2013 |
| 关键词 | Signal processing Greenhouse gases Growth rate Methane |
| 英文摘要 | Hilbert-Huang transform (HHT) method was used to study the monthly average CH4 measurement data during May, 1991 and December, 2010 from Mt. Waliguan station. The results show that in Waliguan, CH4 volume concentration has increased gradually since 1991 and the monthly average is generally higher from 60 g/L to 110 g/L than the global monthly average. The trend of CH4 instantaneous growth rate is the same as the global average instantaneous growth rate in Waliguan, but it has a wide fluctuation range, and its value fluctuates between -8 g/(L·a) and 23 g/(L·a), with contrast to global average between -5 g/(L·a) and 15 g/(L·a). CH4 volume concentration variation of Waliguan exists six intrinsic cycles and they are as follows: 4 months, 7 months, about 1 a, about 2 a, about 5 a and about 11 a. The about 1 a cycle is closely related to the temperature 1 a cycle and rainfall 11 months cycle of Xining, where is the closest city from Waliguan station, and about 11 a cycle is related to sunspot variability 11 a cycle, and all these facts explain that they are important factors which would cause the CH4 volume concentration fluctuate. |
| 出处 | Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
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| 卷 | 44期:1页:431-439 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/31170]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liao Shunbao. Volume concentration variation and law of greenhouse gas methane. 2013. |
入库方式： OAI收割
来源：地理科学与资源研究所
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