The Aerosol-Radiation Interaction Effects of Different Particulate Matter Components during Heavy Pollution Periods in China
| Autor: | Wen Wei, Xiujuan Zhao, Huacheng Wu, Lei Liu, Weiqing Zhou, Xu Jing, Zhang Zijian, Xin Ma, Chunwei Guo |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Pollution
nitrate aerosols Atmospheric Science 010504 meteorology & atmospheric sciences Planetary boundary layer media_common.quotation_subject meteorological factors Air pollution 010501 environmental sciences Environmental Science (miscellaneous) lcsh:QC851-999 medicine.disease_cause Atmospheric sciences black carbon 01 natural sciences chemistry.chemical_compound Nitrate sulfate aerosols medicine Relative humidity Sulfate 0105 earth and related environmental sciences media_common Particulates aerosol-radiation interaction Aerosol chemistry Environmental science lcsh:Meteorology. Climatology |
| Zdroj: | Atmosphere, Vol 11, Iss 3, p 254 (2020) Atmosphere Volume 11 Issue 3 |
| ISSN: | 2073-4433 |
| Popis: | The Beijing-Tianjin-Hebei (BTH) region experienced heavy air pollution in December 2015, which provided a good opportunity to explore the aerosol-radiation interaction (ARI) effects of different particulate matter (PM) components (sulfate, nitrate, and black carbon (BC)). In this study, five tests were conducted by the Weather Research and Forecasting&mdash Chemistry (WRF-Chem) model. The tests included scenario 1 simulation with ARI turned on, scenario 2 simulation with ARI turned off, scenario3 simulation without NOx/NO3- emissions and with ARI turned on, scenario 4 simulation without SO2/SO42&minus emissions and with ARI turned on, and scenario 5 simulation without BC emissions and with ARI turned on. The ARI decreased the downward shortwave radiation (SWDOWN) and the temperature at 2 m (T2), reduced the planetary boundary layer (PBL) height (PBLH), and increased the relative humidity (RH) at 2 m in the region. These factors also contribute to pollution accumulation. The results revealed that BC aerosols have a stronger effect on the reduction in SWDOWN than sulfate (SO42&minus ) and nitrate (NO3&minus ). BC aerosols produce both cooling and heating effects, while SO42&minus aerosols produce only cooling effects. The PBL decreased and RH2 increased due to the aerosol feedback effect of sulfate, nitrate, and BC. The ARI effect on meteorological factors during the nonheavy pollution period was much smaller than that during the pollution period. |
| Databáze: | OpenAIRE |
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