Jianyu Lin1, Xinyong Shen This email address is being protected from spambots. You need JavaScript enabled to view it.1,2, Lizhu Xing1, Huizheng Che3, B.N. Holben4

1 Key Laboratory of Meteorological Disaster, Ministry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing 210044, China
2 Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
3 State Key Laboratory of Severe Weather (LASW) and Key Laboratory of Atmospheric Chemistry (LAC), Chinese Academy of Meteorological Sciences, CMA, Beijing 100081, China
4 Biospheric Sciences Branch, NASA Goddard Space Flight Center, Greenbelt, Maryland, USA


Received: August 4, 2020
Revised: March 28, 2021
Accepted: March 30, 2021

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.


Download Citation: ||https://doi.org/10.4209/aaqr.200503  


Cite this article:

Lin, J., Shen, X., Xing, L., Che, H., Holben, B.N. (2021). Analysis of Aerosol type and Fine- and Coarse-mode Aerosol Direct Radiative Forcing over Regions in East and Southeast Asia Based on AERONET Version 3 Data. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.200503


 

ABSTRACT


Utilizing particle linear depolarization ratio (PLDR) and single scatter albedo (SSA) at 1020 nm from AERONET (Aerosol Robotic Network) Version 3 Level 2.0 data, we distinguish seven kinds of aerosol types (including the pure dust, dust-dominated aerosol, pollution-dominated aerosol, non-absorption aerosol, weak absorption aerosol, medium absorption aerosol and strong absorption aerosol) to explore the spatial and temporal distributions of aerosol components, the radiative effect of fine- and coarse-mode aerosol. We use observations from stations located in five regions: northern China, northwest Asia, the Tibetan Plateau, southern China and Southeast Asia. Fine-mode aerosol dominates in northern China, while coarse-mode aerosol is prevalent in northwest Asia. Fine-mode aerosol also plays a crucial role in the Tibetan Plateau, southern China and Southeast Asia. The highest radiative forcing efficiency (110.3 W m-2) for fine-mode aerosol in the plateau region is corresponding to high concentrations of strong absorption (SA) aerosol. Lowest radiative forcing and radiate forcing efficiency both appears during summer in southern China. Aerosol components are clearly distinct for the spatial and temporal distributions in Southeast Asia. SA aerosol contributes about 20% of the occurrence rate in the Indochinese Peninsula while non-absorption (NA) aerosol and weak absorption (WA) aerosol are the dominant aerosol types in the Malay Peninsula.


Keywords: Particle linear depolarization ratio, Single scatter albedo, Radiative forcing




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