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大气中的黑碳气溶:长期特征,来源分配和趋势

T A Rajesh¹, S Ramachandran¹

¹Space and Atmospheric Sciences Division, Physical Research Laboratory, Ahmedabad 380009, India.

The Science of the total environment

|May 16, 2024

概括

印度的黑碳 (BC) 排放主要由化石燃料 (80%) 主导,化石燃料BC显著增加,木材燃料BC在14年内减少. 城市化推动了这些趋势,影响了空气质量和气候.

科学领域:

大气科学大气科学
环境科学环境科学
空气质量研究空气质量研究

背景情况:

黑碳 (BC) 气溶显著影响空气质量,气候和健康.
在BC排放的不确定性源于化石燃料 (ff) 与生物质 (wf) 来源贡献的有限数据.
我们对长期的BC排放趋势和来源分配的了解很少.

研究的目的:

综合调查城市印度14年 (2006-2019) 的BC特征和来源分配.
分析化石燃料和木材燃料燃烧的BC排放的长期趋势.
了解城市化对BC排放源的影响.

主要方法:

在印度艾哈迈达巴德使用多波长的乙醇计进行BC测量.
在化石燃料 (eBCff) 和木材燃料 (eBCwf) 组件中分配相当的BC (eBC).
分析了eBC,eBCff和eBCwf质量度的14年趋势 (2006-2019年).

主要成果:

平均eBC成分:80%的eBCff和20%的eBCwf,表明化石燃料占主导地位.
从统计学上显著的增长趋势是:eBC (11%年−1) 和eBCff (29%年−1).
统计学上显著的下降趋势:eBCwf (36%年-1),有类似的周日/周末下降.

结论:

生物质燃烧排放量大幅下降,而化石燃料排放量增加,这与城市化和采用更清洁的燃料有关.
在eBCff和eBCwf的不同变化率表明城市化驱动人为排放增加.
这些发现对于制定有效的BC排放控制政策和改善空气质量管理至关重要.

关键词:

一个乙醇计.碳黑是一种碳黑.化石燃料是一种化石燃料.趋势趋势趋势城市和生物质排放.木材燃料木材燃料是木材的燃料,木材是木材的燃料.

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