Measurements of Volatile Organic Compounds During the COVID‐19 Lockdown in Changzhou, China

Details

• Journal Title:
  Geophysical Research Letters
• Personal Author:
  Jensen, Andrew ; Liu, Zhiqiang ; Tan, Wen ; Dix, Barbara ; Chen, Tianshu ; Koss, Abigail ; Zhu, Liang ; Li, Li ; Gouw, Joost
• NOAA Program & Office:
  CIRES (Cooperative Institute for Research in Environmental Sciences)
• Description:
  The COVID-19 outbreak in 2020 prompted strict lockdowns, reduced human activity, and reduced emissions of air pollutants. We measured volatile organic compounds (VOCs) using a proton- transfer-reaction mass spectrometry instrument in Changzhou, China from 8 January through 27 March, including periods of pre-lockdown, strict measures (level 1), and more relaxed measures (level 2). We analyze the data using positive matrix factorization and resolve four factors: textile industrial emissions (62 ± 10% average reduction during level 1 relative to pre-lockdown), pharmaceutical industrial emissions (40 ± 20%), traffic emissions (71 ± 10%), and secondary chemistry (20 ± 20%). The two industrial sources
• Keywords:
  General Earth And Planetary Sciences Geophysics General Earth And Planetary Sciences General Earth And Planetary Sciences
• Source:
  Geophysical Research Letters, 48(20)
• DOI:
  https://doi.org/10.1029/2021gl095560
• ISSN:
  0094-8276 ; 1944-8007
• Format:
  PDF
• Publisher:
  American Geophysical Union (AGU)
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:b6306f81b524267fe6555aedd23bea4db64b9b20ce1589572d86b8e4d71ebc45
• Download URL:
  https://repository.library.noaa.gov/view/noaa/53549/noaa_53549_DS1.pdf
• File Type:
  [PDF - 2.92 MB ]