对比测量CO2,CH4和二氧化碳在两个交通交叉点在德里膨胀的车辆流量在德里
Komal1, Daya Soni1, Khem Singh2
1CSIR- National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad 201002, India.
Journal of environmental sciences (China)
|February 26, 2024
概括
车辆排放在德里显著影响空气质量. 这项研究发现二氧化碳 (CO2) 与交通相关,与甲 (CH4) 不一样,这表明汽车是主要的二氧化碳来源,但不是主要的CH4贡献者.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 城市空气质量 城市空气质量
背景情况:
- 汽车排放是城市地区温室气体和空气污染的主要来源.
- 了解不同污染物的具体贡献对于有效的环境管理至关重要.
- 德里的高交通密度使得它成为车辆排放影响的关键案例研究.
研究的目的:
- 为了研究二氧化碳 (CO2),甲 (CH4) 和一氧化碳 (CO) 度之间的相关性.
- 分析这些气体与德里的气象参数之间的关系.
- 确定这些温室气体在交通繁忙的城市环境中的主要来源.
主要方法:
- 持续监测CO2,CH4和CO度超过一年 (2020年12月 - 2021年10月) 在德里两个不同的交通地点.
- 对气体度季节性和日间变化的分析.
- 应用皮尔森相关系数和污染图来评估与气象因素 (温度,湿度,风速/方向) 的关系.
主要成果:
- 在纳贾夫加尔,相比于拉杰德拉广场,每年的 CO2,CH4 和 CO 的平均晨间度在纳贾夫加尔更高.
- 二氧化碳度遵循冬季>夏季>季风的季节性趋势.
- CH4显示了冬季=夏季>季风的趋势,而CO没有明显的季节性趋势.
- 二氧化碳与二氧化碳有很强的日间相关性,二氧化碳是车辆排放的标志物.
- CH4与CO或CO2没有显著的日间关系.
结论:
- 车辆是德里二氧化碳排放的重要来源.
- 与CO2相比,车辆排放对CH4度的贡献较小.
- 二氧化碳和二氧化碳的空间和时间分布模式表明一个共同的车辆来源.
- 需要进一步的研究来确定城市环境中非车辆的CH4来源.
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