深圳市不同区域大气CO<sub>2</sub>变化特征与来源分析

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摘要于2020年12月1日~2021年12月1日分别在深圳市大学城和路边站两点位对大气CO₂和CO浓度进行了为期1a的观测.本次观测期间内两点位大气CO₂平均浓度分别为432×10^-6和439×10^-6，均呈现了“秋冬季高、春夏季低”的季节变化特征与“昼低夜高”日变化特征，且日变化特征在早晚高峰期受到交通源排放的显著影响.此外，通过引入CO₂和CO的净变化值得到大学城和路边站两点位的ΔCO₂/ΔCO值分别为136.8~184.8、59.0~119.3，结果表明机动车排放对深圳市大气CO₂贡献突出.

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	孙天乐
	何冬一
	林晓玉
	唐梦雪
	曹礼明
	计军平
	古添发
	何凌燕

关键词 ：深圳, CO₂浓度, 季节变化, 日变化, 来源分析

Abstract：This study was monitored CO₂ and CO concentrations for one year at two sites (Roadside Station and University Town) in Shenzhen from December 1, 2020 to December 1, 2021.During the observation period, the average atmospheric CO₂ concentrations of the University Town and Roadside Station in the Shenzhen were 432x10^-6 and 438x10^-6, respectively. The atmospheric CO₂ concentration at both sites showed the seasonal variation characteristics of high in autumn and winter and low in spring and summer, and diurnal variation characteristics of low in day and high in night. In addition, introducing the net change values of CO₂ and CO (ΔCO₂ and ΔCO), the ΔCO₂/ΔCO values at the University Town and Roadside Station in the Shenzhen ranged from 136.8 to 184.8 and 59.0 to 119.3, respectively, indicating that vehicle emissions contributed significantly to atmospheric CO₂ in Shenzhen.

Key words： Shenzhen CO₂ concentration seasonal variation diurnal variation source analysis

收稿日期: 2022-05-13

PACS:

X511

基金资助:国家重点研发计划（2022YFC3701000，第二课题）；深圳市科技计划项目（JCYJ20200109110625819）

通讯作者: 何凌燕,教授,hely@pku.edu.cn E-mail: hely@pku.edu.cn

作者简介: 孙天乐(1986-),女,山东聊城人,高级工程师,博士,主要从事大气污染与碳排放监测研究.发表论文10余篇.

引用本文:

孙天乐, 何冬一, 林晓玉, 唐梦雪, 曹礼明, 计军平, 古添发, 何凌燕. 深圳市不同区域大气CO₂变化特征与来源分析[J]. 中国环境科学, 2022, 42(12): 5497-5505. SUN Tian-le, HE Dong-yi, LIN Xiao-yu, TANG Meng-xue, CAO Li-ming, JI Jun-ping, GU Tian-fa, HE Ling-yan. The characterization and source analysis of atmospheric CO₂ in different areas of Shenzhen. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(12): 5497-5505.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I12/5497

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