Journal article
The multi-year contribution of Indo-China peninsula fire emissions to aerosol radiation forcing in southern China during 2013-2019
The Science of the total environment, Vol.927, 172337
06/01/2024
DOI: 10.1016/j.scitotenv.2024.172337
PMID: 38608908
Abstract
Fire emissions in Southeast Asia transported to southern China every spring (March-May), influencing not only the air quality but also the weather and climate. However, the multi-year variations and magnitude of this impact on aerosol radiation forcing in southern China remain unclear. Here, we quantified the multi-year contributions of fire emissions in Indo-China Peninsula (ICP) region to aerosol radiation forcing in the various southern Chinese provinces during the fire season (March-May) of 2013-2019 combining the 3-dimension chemical transport model and the Column Radiation Model (CRM) simulations. The models' evaluations showed they reasonably capture the temporal and spatial distribution of surface aerosol concentrations and column aerosol optical properties over the study regions. The fire emissions over the ICP region were found to increase the aerosol optical depth (AOD) value by 0.1 (15 %) and reduce the single scattering albedo (SSA) in three southern regions of China (Yunnan-YN, Guangxi-GX, and Guangdong-GD from west to east), owing to increases in the proportions of black carbon (BC, 0.4 % ± 0.1 %) and organic carbon (OC, 3.0 % ± 0.9 %) within the aerosol compositions. The transported smoke aerosols cooled surface but heated the atmosphere in the southern China regions, with the largest mean reduction of -5 Wm
(-3 %) in surface shortwave radiation forcing and the maximum daily contributions of about -15 Wm
(-15 %) to the atmosphere radiation forcing in the GX region, followed by the GD and YN regions. The impacts of ICP fire emissions on aerosol optical and radiative parameters declined during 2013-2019, with the highest rate of 0.393 ± 0.478 Wm
yr
in the GX for the shortwave radiation forcing in the atmosphere. Besides, their yearly changes in the contribution were consistent with the annual fire emissions in the ICP region. Such strong radiative perturbations of ICP fire emissions were expected to influence regional meteorology in southern China and should be considered in the climate simulations.
Details
- Title: Subtitle
- The multi-year contribution of Indo-China peninsula fire emissions to aerosol radiation forcing in southern China during 2013-2019
- Creators
- Jun Zhu - Nanjing UniversityXu Yue - Nanjing UniversityHao Zhou - National University of Defense TechnologyHuizheng Che - State Key Laboratory of Severe WeatherXiangao XiaJun Wang - University of IowaTianliang Zhao - Nanjing University of Information Science and TechnologyChenguang Tian - Nanjing UniversityHong Liao - Nanjing University
- Resource Type
- Journal article
- Publication Details
- The Science of the total environment, Vol.927, 172337
- DOI
- 10.1016/j.scitotenv.2024.172337
- PMID
- 38608908
- eISSN
- 1879-1026
- Grant note
- DOI: 10.13039/501100001809, name: National Natural Science Foundation of China
- Language
- English
- Electronic publication date
- 04/10/2024
- Date published
- 06/01/2024
- Academic Unit
- Electrical and Computer Engineering; Civil and Environmental Engineering; Physics and Astronomy; Chemical and Biochemical Engineering
- Record Identifier
- 9984584908602771
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