摘要
利用连续自动监测仪器,获得CO2源区上海城区2010年夏季高时间分辨率的CO2连续监测数据。监测期间CO2平均浓度为414±16ppm,高于同期全球本底观测站约6%,与中国其他城市化地区的浓度水平基本相当或略低。CO2浓度日变化呈显著早晚双峰特征;周变化呈显著的波浪形,高值集中出现在工作日。除O3外,与其他污染物呈显著相关,提示了污染来源的相似性。在盛行偏西风时,测点CO2平均浓度相对较高。案例分析表明,区域输送是导致上海城区出现高浓度CO2的来源之一,西南和西北方向是输送的主要来向。
By continuous monitoring equipment,hourly CO2 concentrations were measured in summer in Shanghai urban area,which is a source area of CO2.The average concentration of CO2 was 414 ＋ 16ppm,higher than the world background value for about 6%,equal to or lower than other urbanization places in China.The diurnal variation of CO2 concentration showed two peaks in the morning and evening.For weekly variation,daily average was higher in workdays.Concentrations of CO2 were significantly correlated with those of other pollutants except for O3,indicating the similarity of emission sources.The average concentrations of CO2 were relatively higher in western wind direction.From the case study,regional transportation was one of the sources that cause high CO2 concentration in Shanghai Urban Area.Southwest and northwest were the main transportation directions.
出处
《中国环境监测》
CAS
CSCD
北大核心
2011年第2期70-76,共7页
Environmental Monitoring in China
基金
上海市环境保护科学技术发展基金项目(2010-02)
关键词
上海城区
二氧化碳
浓度特征
相关因素分析
Shanghai
The concentration of CO2
Affecting factors
Emission source
