瓦里关地区大气CO_2和CH_4浓度的变化特征  

Characteristics of atmospheric CO_2 and CH_4 variation in the Waliguan area

作　　者：王宁章[1] 李明[1] 李宝鑫[1] WANG Ning-zhang;LI Ming;LI Bao-xin(Chinese Global Atmosphere Watch Baseline Observatory,Qinghai,Xining 810001,China)

机构地区：[1]中国大气本底基准观象台,青海西宁810001

出　　处：《科技视界》2018年第21期210-211,共2页Science & Technology Vision

摘　　要：2009年至2016年在瓦里关全球大气本底站,利用Picarro G1301分析仪在线监测到的大气二氧化碳(CO_2)和甲烷(CH_4)浓度数据资料,分析近8年瓦里关地区的CO_2和CH_4浓度变化特征。结果表明,瓦里关地区大气CO_2和CH_4本底浓度呈现逐年增加的趋势,CO_2浓度年平均增长率为1.9ppm·a-1,CH_4浓度年平均增长率为7.5ppb·a-1,并且两者都具有明显的季节变化特征。CO_2浓度夏秋季明显低于冬春季,而CH_4浓度最高值出现在每年的8月,最低值出现在2月。The atmospheric carbon dioxide and methane concentration data monitored online by the analyzer, Picarro G1301, is used to analyze the variation of CO2 and CH4 concentrations from 2009 to 2016 in the Waliguan Global Atmospheric Background Station. The results show that the atmospheric CO2 and CH4 background concentrations are increasing year by year and the annual average growth rates are 1. 9 and7. 5 ppb ·a^-1 respectively. Both have obvious seasonal variation. The CO2 concentration is significantly lower in summer and autumn than in winter and spring, while the highest value of CH4 appeared in August and the lowest in February of each year.

关 键 词：瓦里关 Picarro 二氧化碳 甲烷 

分 类 号：X51[环境科学与工程—环境工程]