摘要
1993～2000年对北京大气N2O进行了连续8年的观测,结果表明,北京大气N2O浓度8年平均值为315.8(+-)5.9nmol/mol;浓度由1993年的309.7nmol/mol增长到2000年的328.6nmol/mol,年平均增长率为0.9%.1995年以来增长加速,年平均增长率为1.3%.化石燃料燃烧N2O排放量的逐年增长对北京大气N2O浓度的上升趋势有促进作用.北京大气N2O浓度季节变化不十分明显,N2O浓度日变化在所有季节中也无明显规律.
Atmospheric N2O in Beijing was measured from 1993 to 2000 continuously for 8 years. The average value of atmospheric N2O concentration of these 8 years in Beijing was 315.85.9nmol/mol; the concentration increased from 309.7nmol/mol in 1993 to 328.6nmol/mol in 2000, with an annual average rate of 0.9%. It rose more quickly at an annual average rate of 1.3%, from 1995 to 2000. The increase year after year of N2O emission from fossil fuel combustion promoted the rising trend of atmospheric N2O concentration in Beijing. Its seasonal variation was not quite obvious and its daily variation in all seasons had also no obvious rule.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2003年第5期557-560,共4页
China Environmental Science
基金
中国科学院知识创新工程重大项目(KZCX1-SW-01)
关键词
大气污染
N2O
城市环境
北京
atmospheric N2O
urban environment
Beijing City
