内蒙古典型草原2010~2021年黑碳气溶胶浓度变化及影响因素分析

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摘要分析了2010~2021年内蒙古锡林浩特国家气候观象台大气成分观测站黑碳气溶胶浓度观测数据，阐明了黑碳气溶胶浓度时间变化规律，并初步讨论了其与气象要素的关系，以期为大气黑碳气溶胶污染防治工作提供科学依据.结果表明：不同季节、不同风速下，几乎均在南偏西风向时黑碳气溶胶浓度增大且最高，而在东北风向时其浓度几乎不变甚至略减少且最低；黑碳气溶胶浓度日变化整体呈现出明显的四季均为“单峰型”变化特征，冬季峰值出现时间较其他三个季节晚，四季谷值出现时间一致；季节变化总体上呈现出浓度及其标准差均为秋冬季高于春夏季的特征，说明观测点黑碳气溶胶浓度在高值期间的秋冬季，其变化幅度也较大；由于能源结构的改变及节能减排措施的成效，近10年观测点黑碳气溶胶浓度呈明显下降趋势，其变化与气温、降水呈极显著负相关，与相对湿度呈极显著正相关.

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	王慧清
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关键词 ：黑碳气溶胶, 半干旱区, 典型草原, 时间动态, 影响因素

Abstract：In order to provide a scientific basis for the prevention and control of atmospheric black carbon pollution, the temporal variations of the black carbon aerosol concentration and the relationships between the black carbon aerosol concentration and the meteorological elements are analyzed by utilizing the black carbon aerosol concentration observation data of the Atmospheric Composition Observatory of Xilinhot National Climate Observatory in Inner Mongolia from 2010~2021. The results showed that the black carbon aerosol concentration increases and is highest in the south-westerly wind direction in different seasons and wind speeds, while it is almost constant or even decreases slightly and is lowest in the northeasterly wind direction. The overall daily variation of black carbon aerosol concentration shows the characteristic of "single-peak" variation in all seasons, with the peak in winter occurring later than the other three seasons and the trough in all four seasons occurring at the same time. In the past 10 years, due to the change of energy structure and the effectiveness of energy-saving and emission-reduction measures, the black carbon aerosol concentration at the observation sites showed a significant decreasing trend, and its changes were highly significantly negatively correlated with temperature and precipitation, and highly significantly positively correlated with relative humidity.. The results show that the black carbon aerosol concentration increases and is highest in the south-westerly wind direction in different seasons and wind speeds, while it is almost constant or even decreases slightly and is lowest in the northeasterly wind direction. The overall daily variation of black carbon aerosol concentration shows the characteristic of "single-peak" variation in all seasons, with the peak in winter occurring later than the other three seasons and the trough in all four seasons occurring at the same time. In the past 10years, due to the change of energy structure and the effectiveness of energy-saving and emission-reduction measures, the black carbon aerosol concentration at the observation sites showed a significant decreasing trend, and its changes were highly significantly negatively correlated with temperature and precipitation, and highly significantly positively correlated with relative humidity.

Key words： black carbon aerosol semi-arid zone typical grassland temporal dynamics influencing factors

收稿日期: 2023-05-24

PACS:

X513

基金资助:国家自然科学基金项目（42030604）；内蒙古自治区科技计划项目（2022YFSH0009）；呼伦贝尔市科技计划项目（SF2022013）

通讯作者: 王慧清,高级工程师,11612160@qq.com E-mail: 11612160@qq.com

作者简介: 王慧清(1982-),女,内蒙古呼和浩特人,高级工程师,硕士,主要从事大气环境及灾害性天气成因及机理研究.发表论文20余篇.11612160@qq.com.

引用本文:

王慧清, 裴浩, 孙玉. 内蒙古典型草原2010~2021年黑碳气溶胶浓度变化及影响因素分析[J]. 中国环境科学, 2024, 44(1): 83-92. WANG Hui-qing, PEI Hao, SUN Yu. Analysis of black carbon aerosol concentration changes and influencing factors in typical steppe of Inner Mongolia from 2010 to 2021. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(1): 83-92.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2024/V44/I1/83

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