Abrupt but smaller than expected changes in surface air quality attributable to COVID-19 lockdowns

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  Quantitative Attribution of Secondary Organic Aerosol in Beijing to its Precursors

  Shi, Z. (Co-Investigator) & Harrison, R. (Principal Investigator)

  Natural Environment Research Council

  31/01/19 → 30/01/21

  Project: Research Councils

  • Positive Matrix Factorization 100%
  • Positive Matrix Factorisation 100%
  • Secondary Organic Aerosol 80%
  • Source Apportionment 68%
  • Secondary Organic Aerosol Yields 60%

• Silicon-containing secondary organic aerosols in the ambient air (Si-SOA)

  Shi, Z. (Principal Investigator)

  Natural Environment Research Council

  1/04/18 → 30/09/19

  Project: Research Councils

  • Source Apportionment 100%
  • Air Quality 100%
  • Chemical Mass Balance 75%
  • Particular Matter 2.5 74%
  • Organic Carbon 70%

• Sources and Emissions of Air Pollutants in Beijing (AIRPOLL-Beijing)

  Bloss, W. (Co-Investigator), Harrison, R. (Principal Investigator) & Shi, Z. (Co-Investigator)

  Natural Environment Research Council, University of York

  1/01/16 → 31/12/19

  Project: Research

  • Source Apportionment 100%
  • Particular Matter 2.5 83%
  • Atmospheric Aerosol 80%
  • Positive Matrix Factorisation 77%
  • Chemical Mass Balance 77%