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Document library An analysis of the impact of COVID-19 restrictions on air quality in the Wellington region

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Title An analysis of the impact of COVID-19 restrictions on air quality in the Wellington region
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Date published 1 June 2021
GWRC Publication No GW/ESCI-T-21/37
Abstract COVID-19 alert level restrictions curtailed people’s usual activities and transport patterns from March to August 2020. This study showed that a key traffic-related air pollutant (nitrogen dioxide) was dramatically reduced during lockdown but re-bounded to higher than expected levels upon the return to Level 1. In Masterton, PM2.5 was higher than expected during Levels 3 and 2 possibly due to increased stay at home behaviour leading to more use of solid fuel heating during the cooler months.

Publication author: Tamsin Mitchell
Department: Environmental Science
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