Inversion of the global carbonaceous aerosol components (CACs) based on ground-based remote sensing of AERONET

IF 10.3 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environment International Pub Date : 2025-04-01 DOI:10.1016/j.envint.2025.109432

Zhuolin Yang , Ying Zhang , Yisong Xie , Hua Xu , Chaoyu Yan , Tong Hu , Zhengqiang Li

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引用次数: 0

Abstract

Carbonaceous aerosol components (CACs) significantly influence global radiative forcing and human health. We developed a simultaneous inversion algorithm for four CACs: black carbon (BC), brown carbon (BrC), water-soluble organic matter (WSOM), and water-insoluble organic matter (WIOM), considering their distinct optical, solubility, and hygroscopicity properties. Using AERONET data, we inverted the global concentrations of these components for 2022. We observed that the mass concentration of black carbon (BC) is highest in the South Asian region, with an annual average of 4.74 mg m⁻². High values of brown carbon (BrC) correspond well with regions and seasons of biomass burning, with the annual average reaching 9.03 mg m⁻² at sites in Central and West Africa. Water-insoluble organic matter (WIOM) is the most predominant component in carbonaceous aerosols, with an annual average concentration as high as 53.11 mg m⁻² at the Dhaka_University site in Eastern South Asia. Additionally, the study also points out a significant correlation between the dominant components of carbonaceous aerosols and their seasonal variations with local emissions. Furthermore, the validation of optical parameters against official AERONET products demonstrates a good correlation.

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基于AERONET地基遥感的全球碳质气溶胶组分（CACs）反演

碳质气溶胶组分（CACs）显著影响全球辐射强迫和人类健康。考虑到黑碳（BC）、棕碳（BrC）、水溶性有机物（WSOM）和水不溶性有机物（WIOM）不同的光学、溶解度和吸湿性，我们开发了四种CACs的同时反演算法。利用AERONET数据，我们反演了2022年这些成分的全球浓度。我们观察到，南亚地区的黑碳（BC）质量浓度最高，年平均值为4.74 mg m−2。棕色碳（BrC）的高值与生物质燃烧的区域和季节相对应，在中非和西非的站点，BrC的年平均值达到9.03 mg m−2。水不溶性有机物（WIOM）是碳质气溶胶中最主要的成分，在南亚东部Dhaka_University站点，WIOM的年平均浓度高达53.11 mg m - 2。此外，该研究还指出，碳质气溶胶的主要成分及其季节变化与当地排放量之间存在显著相关性。此外，光学参数与官方AERONET产品的验证表明了良好的相关性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Environment International 环境科学-环境科学

CiteScore

21.90

自引率

3.40%

发文量

734

审稿时长

2.8 months

期刊介绍： Environmental Health publishes manuscripts focusing on critical aspects of environmental and occupational medicine, including studies in toxicology and epidemiology, to illuminate the human health implications of exposure to environmental hazards. The journal adopts an open-access model and practices open peer review. It caters to scientists and practitioners across all environmental science domains, directly or indirectly impacting human health and well-being. With a commitment to enhancing the prevention of environmentally-related health risks, Environmental Health serves as a public health journal for the community and scientists engaged in matters of public health significance concerning the environment.