Objective Synoptic Weather Classification on Air Pollution during Winter Seasons in Hangzhou

Authors

  • Jiaqi Zhao Nanjing University of Information Science and Technology/Key Laboratory for Aerosol-Cloud-Precipitation, China Meteorological Administration, Nanjing, 210044, China;Songyuan Meteorological Bureau, Songyuan, 138005, China
  • Chenggang Wang Nanjing University of Information Science and Technology/Key Laboratory for Aerosol-Cloud-Precipitation, China Meteorological Administration, Nanjing, 210044, China

DOI:

https://doi.org/10.30564/jasr.v4i3.3256

Abstract

Using the 2015-2018 Hangzhou city PM2.5, PM10, SO2, CO, NO2 and O3 mass concentration data, ERA5 reanalysis data and ground observation data, through the PCT classification method, the objective analysis of the winter air pollution weather situation in Hangzhou was obtained. The results showed that the winter air quality concentration in Hangzhou continued to be high from 2015 to 2018, and the air pollution was the most significant. Through objective classification, it is concluded that the main weather conditions affecting the region in winter are divided into 6 types, namely high pressure control, high pressure bottom control equalizing field, L-shaped high pressure control, high pressure front control equalizing field, low pressure control, low pressure front control Equalizing field. Among them, when high pressure control, high pressure bottom control equalizing field, L high pressure control, low pressure control are affected by local sources, the impact of external sources has a greater impact on the air quality in Hangzhou, and air pollution is prone to occur; before low pressure When the pressure equalization field is controlled by the Ministry and the pressure equalization field is controlled by the high pressure front, the local wind and precipitation in Hangzhou are relatively high, which is not conducive to the accumulation of air pollutants. The probability of occurrence of air pollution is small, and air pollution is not easy to occur.

Keywords:

PM2.5；PCT；Objective weather classification

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How to Cite

Zhao, J., & Wang, C. (2021). Objective Synoptic Weather Classification on Air Pollution during Winter Seasons in Hangzhou. Journal of Atmospheric Science Research, 4(3), 1–13. https://doi.org/10.30564/jasr.v4i3.3256

Issue

Vol. 4 , Iss. 3 (July 2021)

Article Type

Article

License

Copyright © 2021 Author(s)

Creative Commons License

This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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