Modeling Biogenic Volatile Organic Compounds Emissions and Subsequent Impacts on Ozone Air Quality in the Sichuan Basin, Southwestern China
نویسندگان
چکیده
Biogenic volatile organic compounds (BVOCs) impact atmospheric oxidation capacity and regional air quality through various biogeochemistry processes. Accurate estimation of BVOC emissions is crucial for modeling the fate transport pollutants in chemical models. Previous characterizes spatial variability BVOCs while estimated show large uncertainties, impacts on ozone (O 3 ) are not well understood. In this study, we estimate by model gases aerosols from nature (MEGAN) v2.1 MEGAN v3.1 over Sichuan Basin (SCB) situated southwestern China 2017. Further, critical role O pollution illustrated with a CMAQ modeled episode summer Annual SCB 2017 to be 1.8 × 10 6 tons isoprene as high 7.3 5 tons. Abundant depicted southern southeastern SCB, contrast relatively low Chengdu Plain northeastern SCB. simulations depict strong influence ambient formation densely forested regions including Chongqing city, accounting 10% daily maximum hourly concentration (DM1h 6% 8-h average (MDA8h concentrations July Over severe 2017, sensitivity experiments indicate that enhanced contribute substantially basin-wide elevate peak levels 36.5 31.2 ?g/m Plain, respectively. This work identifies robustly important effects exceedance events contributes insight into pursuing an abatement strategy full consideration potential contributions emissions.
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ژورنال
عنوان ژورنال: Frontiers in Ecology and Evolution
سال: 2022
ISSN: ['2296-701X']
DOI: https://doi.org/10.3389/fevo.2022.924944