半干旱城市碳酸性气溶的特征和来源:量化人类和气象的影响

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Updated: Jul 28, 2025

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

Peng Liu¹, Haijun Zhou², Xi Chun²

¹College of Geographical Sciences, Inner Mongolia Normal University, Hohhot, 010022, China.

|May 29, 2023

概括

这项研究表明,煤炭燃烧和车辆排放对半干旱地区的空气质量产生重大影响,不利的天气加剧了污染. 监管这些来源对于减少碳酸性气溶至关重要.

科学领域:

环境科学环境科学
大气化学大气化学
空气质量研究空气质量研究

背景情况:

碳气溶显著影响空气质量,人类健康和气候.
了解半干旱地区的碳酸性气溶及其与控制措施的关系仍然有限.
气象对气溶污染的贡献往往不清楚,这使控制策略的评估变得复杂.

研究的目的:

调查半干旱城市霍霍特碳酸性气溶的特征,来源和影响因素.
量化人为排放和气象条件对碳酸气溶的影响.
揭示了排放控制措施与空气质量之间的复杂关系.

主要方法:

在线和线下对碳酸性气溶 (PM2.5,OC,EC) 进行了一年时间的观测 (2019年10月至2020年10月).
分析季节性变化和确定污染源,包括燃煤和车辆排放.
应用了增强回归树模型来区分人类和气象的贡献.

主要成果:

年平均度:PM2.5 (42.81 μg m−3),OC (7.57 μg m−3),EC (2.25 μg m−3) 在一年中的平均度.
冬季观察到的度最高,与用于供暖的煤炭燃烧有关.
在COVID-19封锁期间,由于恶劣天气造成的二次形成抵消了排放减少;煤炭和车辆排放是主要贡献者.

结论:

煤炭燃烧和车辆排放是霍霍特地区碳酸性气溶的主要来源.
不利的气象条件可以放大污染,即使是在减排期间.
有效的空气质量管理需要严格监管半干旱地区的煤炭使用和车辆排放.

关键词:

人为排放是人类造成的.在COVID-19封锁期间,碳酸气溶是一种碳酸气溶.气象条件气象条件

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The Carbon Cycle

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.