| 青藏高原东坡四峨山区域黑碳浓度特征与来源解析 |
| Characteristic and Source Apportionment of Black Carbon Concentration in the Mount Si'e Area on the Eastern Slope of the Qinghai-Xizang Plateau |
| 投稿时间：2024-05-14 修订日期：2024-10-23 |
| DOI：10.19316/j.issn.1002-6002.2025.04.06 |
| 中文关键词: 黑碳 变化特征 来源解析 后向轨迹 四峨山区域 |
| 英文关键词:black carbon variation characteristics source apportionment backward trajectory the Mount Si'e area |
| 基金项目:国家重点研发计划项目(2023YFC3709301);成都信息工程大学引进人才科研启动项目(KYTZ202127);大学生创新创业训练计划项目(202410621019) |
| 作者 | 单位 | | 原之荷 | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225 | | 曾思影 | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225 | | 张小玲* | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225
成都平原城市气象与环境四川省野外科学观测研究站, 四川 成都 610225 | | 李君泽 | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225 | | 何雨璐 | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225 | | 袁亮 | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225
成都平原城市气象与环境四川省野外科学观测研究站, 四川 成都 610225 | | 王婧怡 | 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225 |
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| 通讯作者:张小玲* 成都信息工程大学大气科学学院, 高原大气与环境四川省重点实验室, 四川 成都 610225;成都平原城市气象与环境四川省野外科学观测研究站, 四川 成都 610225 |
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| 中文摘要: |
| 黑碳是重要的大气气溶胶组分,对气候、环境与健康都有不利影响。基于2021年5月至2022年1月青藏高原东坡四峨山区域(山区农村)黑碳浓度连续观测数据,分析了该地区黑碳的浓度变化特征和来源,并与同期成都市区黑碳浓度作对比。研究结果显示,观测期间四峨山区域黑碳平均浓度为2.26 μg/m3,比城市地区低0.72 μg/m3。四峨山区域黑碳月平均浓度峰值出现在1月,达到3.91 μg/m3;谷值出现在8月,为1.62 μg/m3。受人类活动和气象条件影响,四峨山黑碳浓度日变化呈现明显的双峰双谷形,且日变化幅度较大,峰值分别出现在北京时间06:00—08:00和19:00—20:00,谷值分别出现在03:00—04:00和14:00—15:00。城市地区早晨、傍晚至夜间浓度均较高,下午较低。四峨山黑碳主要来源于化石燃料燃烧,贡献率约为69%,且其生物质燃烧贡献比城市地区更大。气团后向轨迹聚类分析结果表明,四峨山黑碳主要来自四川盆地内部短距离输送,但也受到远距离输送的影响。 |
| 英文摘要: |
| Black carbon is an important aerosol component,which has adverse effects on climate,environment and health.Based on the continuous observation data of black carbon concentration in the Mount Si'e area (mountainous rural area) on the eastern slope of the Qinghai-Xizang Plateau from May 2021 to January 2022,the concentration variation characteristics and source apportionment of black carbon in this area were analyzed and compared with those of Chengdu urban areas in the same period.The research results showed that the average black carbon concentration in the Mount Si'e area during the observation period was 2.26 μg/m3,which was 0.72 μg/m3 lower than that in Chengdu urban areas.The peak of the monthly average concentration appeared in January,reaching 3.91 μg/m3,and the trough appeared in August,which was 1.62 μg/m3.Affected by human activities and meteorological conditions,the diurnal variation of black carbon concentration in the Mount Si'e area presented an obvious double-peak and double-trough pattern,and the diurnal variation amplitude was large.The peaks appeared at 06:00-08:00 and 19:00-20:00 Beijing time,and the troughs appeared at 03:00-04:00 and 14:00-15:00 respectively.In urban areas,the concentration was relatively high in the morning and from evening to night,and lower in the afternoon.Black carbon in the Mount Si'e area mainly originated from the combustion of fossil fuels,with a contribution rate of approximately 69%.The contribution of biomass fuel combustion was greater than that in urban areas.Backward trajectory analysis showed that the black carbon in the Mount Si'e area was mainly transported through local and short-distance transportation from the interior of the Sichuan Basin,but there were also influences and contributions from long-distance transportation. |
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