| 北京城区大气CH4浓度及其变化规律 |
| |
| 引用本文： | 王长科,王跃思,刘广仁,李 晶,王明星.北京城区大气CH4浓度及其变化规律[J].环境科学研究,2003,16(6):43-45. |
| |
| 作者姓名： | 王长科 王跃思 刘广仁 李 晶 王明星 |
| |
| 作者单位： | 1.中国科学院,大气物理研究所,北京,100029;中国气象局,国家气候研究中心,北京,100081 |
| |
| 基金项目： | 中国科学院知识创新工程重大项目(KZCX1-SW-01) |
| |
| 摘 要： | 研究表明:北京城区大气CH4浓度日变化总特征是白天浓度低,夜间浓度高;大气CH4浓度季节变化呈明显的双峰模态,分别在夏末和冬季各出现一个峰,冬季峰值主要是人为源造成的;1985-2000年,北京城区大气CH4摩尔分数平均值为(1 883.4±73.0) nmol/mol,年平均增长率为0.82%,均比全球平均水平高,但20世纪90年代的增长速率比80年代末期低.
|
| 关 键 词： | 大气CH4 温室气体 城市环境 北京 |
| 文章编号： | 1001-6929(2003)06-0043-03 |
| 收稿时间： | 2003/3/12 0:00:00 |
Variations of Atmospheric Methane in Urban Area of Beijing |
| |
| WANG Chang-ke,WANG Yue-si,LIU Guang-ren,LI Jing and WANG Ming-xing.Variations of Atmospheric Methane in Urban Area of Beijing[J].Research of Environmental Sciences,2003,16(6):43-45. |
| |
| Authors: | WANG Chang-ke WANG Yue-si LIU Guang-ren LI Jing and WANG Ming-xing |
| |
| Institution: | 1.Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China; National Climate Center,China Meteorological Administration,Beijing 100081,China2.Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China |
| |
| Abstract: | The diurnal variation of the atmospheric CH\-4 at the urban area in Beijing displayed a very clear cycle,generally with the lowest value being recorded in the daytime and the highest at night.It showed a large seasonal cycle with two peaks,one in later summer and the other in the winter.The peak in the winter was contributed mostly by anthropogenic methane sources.The concentration of atmospheric CH\-4 in Beijing increased rapidly at an annual rate of 0.82% from 1985 to 2000,with a mean of (1 883.4±73.0)nmol/mol.But the growth rate in the 1990s was lower than that in late 1980s. |
| |
| Keywords: | atmospheric CH_4 greenhouse gases urban environment Beijing |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境科学研究》浏览原始摘要信息 |
| 点击此处可从《环境科学研究》下载免费的PDF全文 |
|
