在摩尔多瓦,东欧,使用长达二十年的地面遥感数据集对气溶特性进行了洞察
Dipesh Rupakheti1, Alexandr Aculinin2, Maheswar Rupakheti3
1Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China; Institute of Fundamental Research and Studies (InFeRS), Kathmandu 44600, Nepal.
Environmental pollution (Barking, Essex : 1987)
|September 11, 2023
概括
这项研究分析了20多年来在基西内乌的气溶光学特性,揭示了夏天是气溶光学深度 (AOD) 和安格斯特罗姆指数 (AE) 的高峰季节. 人为气溶显著影响细气溶负载,特别是在极端和强大的气溶事件期间.
科学领域:
- 大气科学 大气科学
- 环境科学 环境科学
- 气溶科学 气溶科学
背景情况:
- 气溶的光学特性对于理解大气辐射转移和气候至关重要.
- 像AERONET这样的长期监测站点为气溶研究提供了宝贵的数据.
- 东欧为研究气溶运输和来源提供了一个独特的地区.
研究的目的:
- 为了研究气溶的光学特性及其季节性变化,在摩尔多瓦的基西纽上空.
- 确定主要的气溶类型及其对大气负荷的贡献.
- 分析极端和强气溶事件及其驱动因素的特征.
主要方法:
- 利用了来自基西奈乌站的二十年的AERONET数据 (1999年9月至2018年11月).
- 计算了气溶光学深度 (AOD) 和安格斯特罗姆指数 (AE) 来描述气溶.
- 分析了气溶尺寸分布,并根据光学特性对气溶类型进行了分类.
主要成果:
- 平均AOD为0.21±0.13和AE为1.49±0.29,夏季显示的最高值.
- 清洁的大陆气溶占主导地位 (∼55%),其次是混合气溶,季节性变化.
- 人为气溶,特别是来自城市/工业来源和生物质燃烧的气溶,对微型气溶和极端/强烈事件作出了重大贡献.
结论:
- 奇西涅乌的气溶光学特性表现出显著的季节性变化,夏季是最活跃的时期.
- 人类活动在塑造气溶载荷,特别是细气溶中发挥着主导作用.
- 了解这些气溶特性对于该地区的气候建模和空气质量管理至关重要.
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