The International Global Atmospheric Chemistry project comments on the revised WHO air quality guidelines

Details

• Journal Title:
  Environmental Research Letters
• Personal Author:
  Paton-Walsh, Clare ; Subramanian, R ; Crawford, James H ; Dawidowski, Laura ; Langley DeWitt, H ; Emberson, Lisa ; Emmons, Louisa ; Garland, Rebecca M ; Kanaya, Yugo ; Mbandi, Aderiana ; Pratt, Kerri A ; Rojas, Nestor Y ; Salam, Abdus ; Šindelářová, Kateřina ; Sinha, Vinayak ; Touré, N’Datchoh Evelyne ; Yu, Liya E ; Zheng, Mei
• NOAA Program & Office:
  CIRES (Cooperative Institute for Research in Environmental Sciences)
• Description:
  In September 2021, the World Health Organization (WHO) announced updated global air quality guidelines providing health-based targets for six key air pollutants [1]. The annual targets for pollutant concentrations were reduced fourfold for nitrogen dioxide (NO2) to 10 µg m−3 and by 50% and 25% respectively for the mass concentration of particles smaller than and equal to 2.5 µm (PM2.5) and 10 µm (PM10) to 5 µg m−3 and 15 µg m−3. New targets were introduced for peak season ozone (O3) at 60 µg m−3 and daily carbon monoxide (CO) at 4 mg m−3. In contrast, the target for sulfur dioxide (SO2) was relaxed by a factor-of-two [1] to 40 µg m−3. The new guidelines also have updated interim targets.
• Source:
  Environmental Research Letters, 18(11), 111001
• DOI:
  https://doi.org/10.1088/1748-9326/ad039f
• ISSN:
  1748-9326
• Format:
  pdf
• Publisher:
  IOP Publishing
• Document Type:
  Journal Article
• License:
  https://creativecommons.org/licenses/by/4.0
• Rights Information:
  CC BY
• Compliance:
  Library
• Main Document Checksum:
  urn:sha-512:efb65d0abc3a87540a0ec29f6d6ed73d866fa0a660bbceb53e3a09a77f0d23d31b11955c46aca320fa4f99cba8d8effb3ed33b84acc46cb8081eae155bac898b
• Download URL:
  https://repository.library.noaa.gov/view/noaa/68905/noaa_68905_DS1.pdf
• File Type:
  [PDF - 759.92 KB ]