2016-2020年常州市温室气体浓度及相关因素分析

基于2016-2020年常州市主要温室气体的监测数据,采用长时间序列分析和相关性分析等方法,研究了二氧化碳(CO2)和甲烷(CH4)浓度的变化趋势,分析了CO2和CH4与污染物和气象要素的相关性,初步探讨了生物源和人为源的影响.结果 表明:常州市大气CO2和CH4年平均浓度分别为416.4 ppm和1635.7 ppb...

Concentrations and Affecting Factors of Greenhouse Gases in Changzhou from 2016 to 2020

Based on the monitoring data of main greenhouse gases,variation characteristics of carbon dioxide(CO₂)and methane(CH₄)in Changzhou from 2016 to 2020 were studied by using such methods as long-term sequence analysis and correlation analysis.A correlation between the concentration of CO₂and CH₄and pollutants and meteorological parameters was analyzed,and the effects of biological sources and human activities were discussed preliminary.The results showed that the annual average concentrations of CO₂and CH₄were 416.4ppm and 1635.7ppb in Changzhou respectively,and the increasing rates were both higher than that in Waliguan during the same period.The CO₂and CH₄concentrations were lower and the biological sources such as photosynthesis and plant growth had a greater impact in summer.While the concentrations and impacts of human activities and industrial production increased in winter.The diurnal variation of CO₂concentration showed two peaks in the morning and evening.The diurnal variation of CH₄exhibited one peak and it was highest in autumn which indicated the greater impact of biological sources on CH₄.CO₂and CH₄were significantly correlated with NO₂,NOx,PM_2.5 and PM₁₀.The correlation with meteorological parameters was obviously weakened.When the wind speed increased,the diffusion conditions were conducive to the reduction of CO₂and CH₄concentrations.