| Title: | Spatial and species-specific responses of biogenic volatile organic compound (BVOC) emissions to elevated ozone from 2014-2020 in China |
| Address: | "College of Environmental Sciences and Engineering, Carbon Neutrality and Eco-Environmental Technology Innovation Center of Qingdao, Qingdao University, Qingdao 266071, China. Electronic address: lilingyu@qdu.edu.cn. College of Environmental Sciences and Engineering, Carbon Neutrality and Eco-Environmental Technology Innovation Center of Qingdao, Qingdao University, Qingdao 266071, China. Laboratory of Atmospheric Chemistry, Energy and Environment Research Division, Paul Scherrer Institute/ETH, Villigen 5232, Switzerland" |
| DOI: | 10.1016/j.scitotenv.2023.161636 |
| ISSN/ISBN: | 1879-1026 (Electronic) 0048-9697 (Linking) |
| Abstract: | "China suffered from serious and elevated ozone (O(3)) pollution during 2014-2020. O(3) exposure increased with W126, a biologically based cumulative exposure index, at a rate of 1.738 ppm-hr yr(-1). MEGAN3.1 was applied to estimate biogenic volatile organic compound (BVOC) emissions and their response to O(3) pollution in China by quantifying species responses to O(3) stress. In 2020, China's BVOC emissions were 23.26 Tg when considering the effects of O(3) pollution, which was 1.7 % higher than that without O(3) stress. Isoprene, monoterpenes, sesquiterpenes, and other VOC emissions changed by -1.0 %, 1.4 %, 15.5 %, and 2.7 %, respectively. The stimulated BVOC emissions were mainly focused on the North China Plain (NCP) and a partial area of the Tibetan Plateau, which increased by >45 %. Changes in monthly emissions differed, with the greatest increase, 181 tons (3.25 %), in August. The seasonal patterns for the impacts of O(3) pollution were also distinguished spatially. The elevated O(3) exposure caused BVOC emission increases of 104.7 Gg yr(-1) during 2014-2020, with isoprene, monoterpenes, sesquiterpenes, and other VOCs contributing -18.6 %, 27.5 %, 40.4 %, and 50.8 %, respectively. The greatest increase in emissions appeared on the NCP and eastern and central China, with annual increases of >100 tons per grid (36 km x 36 km). The interannual variations in BVOC emissions also displayed different seasonal patterns" |
| Keywords: | *Ozone/analysis *Volatile Organic Compounds/analysis *Air Pollutants/analysis Monoterpenes/analysis *Sesquiterpenes China Environmental Monitoring Biogenic emission Megan3.1 Ozone exposure Stressed emission VOCs; |
| Notes: | "MedlineLi, Lingyu Cao, Jing Hao, Yufang eng Netherlands 2023/01/20 Sci Total Environ. 2023 Apr 10; 868:161636. doi: 10.1016/j.scitotenv.2023.161636. Epub 2023 Jan 16" |
