Significant chlorine emissions from biomass burning affect the long-term atmospheric chemistry in Asia

Chang, Di1; Li, Qinyi2,3,4; Wang, Zhe5; Dai, Jianing3,6; Fu, Xiao3,7; Guo, Jia8; Zhu, Lei9; Pu, Dongchuan9; Cuevas, Carlos A.2; Fernandez, Rafael P.10; Wang, Weigang11; Ge, Maofa11; Fung, Jimmy C. H.5; Lau, Alexis K. H.5; Granier, Claire12,13; Brasseur, Guy3,6,14; Pozzer, Andrea1; Saiz-Lopez, Alfonso2; Song, Yu15; Wang, Tao3

2024-09-20

10.1093/nsr/nwae285

NATIONAL SCIENCE REVIEW   影响因子和分区

2095-5138

2053-714X

["Biomass burning (BB) is a major source of trace gases and particles in the atmosphere, influencing air quality, radiative balance, and climate. Previous studies have mainly focused on the BB emissions of carbon and nitrogen species with less attention on chlorine. Reactive chlorine chemistry has significant effects on atmospheric chemistry and air quality. However, quantitative information on chlorine emissions from BB, particularly the long-term trend and associated atmospheric impacts, is limited both on regional and global scales. Here, we report a long-term (2001-2018) high-resolution BB emission inventory for the major chlorine-containing compounds (HCl, chloride, and CH3Cl) in Asia based on satellite observations. We estimate an average of 730 Gg yr-1 chlorine emitted from BB activity in Asia, with China contributing the largest share at 24.2% (177 Gg yr-1), followed by Myanmar at 18.7% and India at 18.3%. Distinct seasonal patterns and significant spatial and interannual variability are observed, mainly driven by human-mediated changes in agricultural activity. By incorporating the newly developed chlorine emission inventory into a global chemistry-climate model (CAM-Chem), we find that the BB-chlorine emissions lead to elevated levels of HCl and CH3Cl (monthly average up to 2062 and 1421 parts per trillion by volume (pptv), respectively), subsequently resulting in noticeable changes in oxidants (up to 3.1% in O3 and 17% in OH radicals). The results demonstrate that BB is not only a significant source of air pollutants but also of oxidants, suggesting a larger role of BB emissions in the atmospheric chemistry and oxidation process than previously appreciated. In light of the projected increase in BB activity toward the end of the century and the extensive control of anthropogenic emissions worldwide, the contribution of BB emissions may become fundamental to air quality composition in the future.","Biomass burning releases substantial chlorine-containing species, driving significant long-term and widespread impacts on atmospheric chemistry and oxidation in Asia, revealing a crucial and previously underappreciated role in air quality and climate interactions."]

biomass burning emission chlorine emission inventory tropospheric halogen chemistry atmospheric oxidants CAM-Chem model

SCI

英语

其他

National Natural Science Foundation of China (NSFC)["42122062","91744204"] ; Research Grants Council of Hong Kong Special Administrative Region["T24/504/17-N","16209022","16201623"] ; European Research Council Executive Agency under the European Union[726349]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001316034300001

OXFORD UNIV PRESS

Web of Science

1.Max Planck Inst Chem, Atmospher Chem Dept, D-55128 Mainz, Germany
2.CSIC, Inst Phys Chem Blas Cabrera, Dept Atmospher Chem & Climate, Madrid 28006, Spain
3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China
4.Shandong Univ, Environm Res Inst, Qingdao 266000, Peoples R China
5.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong 999077, Peoples R China
6.Max Planck Inst Meteorol, Environm Modeling Grp, D-20146 Hamburg, Germany
7.Tsinghua Univ, Inst Environm & Ecol, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518000, Peoples R China
8.Hong Kong Univ Sci & Technol, Inst Environm, Environm Cent Facil, Hong Kong 999077, Peoples R China
9.Southern Univ Sci & Technol, Atmospher Chem Modeling & Remote Sensing Res Grp, Shenzhen 518055, Peoples R China
10.FCEN UNCuyo, Inst Interdisciplinary Sci ICB, Natl Res Council CONICET, RA-5501 Mendoza, Argentina
11.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
12.Univ Colorado, CIRES, NOAA Chem Sci Lab, Boulder, CO 80305 USA
13.Univ Toulouse UPS, Lab Aerol, CNRS, F-31062 Toulouse, France
14.Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, Boulder, CO 80305 USA
15.Peking Univ, Dept Environm Sci, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100871, Peoples R China

Chang, Di,Li, Qinyi,Wang, Zhe,et al. Significant chlorine emissions from biomass burning affect the long-term atmospheric chemistry in Asia[J]. NATIONAL SCIENCE REVIEW,2024,11(9).

Chang, Di.,Li, Qinyi.,Wang, Zhe.,Dai, Jianing.,Fu, Xiao.,...&Wang, Tao.(2024).Significant chlorine emissions from biomass burning affect the long-term atmospheric chemistry in Asia.NATIONAL SCIENCE REVIEW,11(9).

Chang, Di,et al."Significant chlorine emissions from biomass burning affect the long-term atmospheric chemistry in Asia".NATIONAL SCIENCE REVIEW 11.9(2024).