About: Short-term change in air pollution following the COVID-19 state of emergency: A national analysis for the United States

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About: Short-term change in air pollution following the COVID-19 state of emergency: A national analysis for the United States Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Short-term change in air pollution following the COVID-19 state of emergency: A national analysis for the United States
Creator	Braun, Danielle Dominici, Francesca Henneman, Lucas Sabath, Benjamin Tyagi, Pooja
Source	MedRxiv
abstract	Lockdown measures taken in response to the COVID-19 pandemic produced sudden social and economic changes. We examined the extent of air pollution reduction that was attained under these extreme circumstances, whether these reductions occurred everywhere in the US, and the local factors that drove them. Employing counterfactual time series analysis based on seasonal autoregressive integrated moving average models, we found that these extreme lockdown measures led to a reduction in the weekly PM2.5 average by up to 3.4 micrograms per cubic meter and the weekly NO2 average by up to 11 ppb. These values represent a substantial fraction of the annual mean NAAQS values of 12 micrograms per cubic meter and 53 ppb, respectively. We found evidence of a statistically significant decline in NO2 concentrations following the state-level emergency declaration in almost all states. However, statistically significant declines in PM2.5 occurred mostly in the West Coast and the Northeast. Certain states experienced a decline in NO2 but an increase in PM2.5 concentrations, indicating that these two pollutants arise from dissimilar sources in these states. Finally, we found evidence that states with a higher percentage of mobile source emissions prior to the emergency measures experienced a greater decline in NO2 levels during the pandemic. Although the current social and economic restrictions are not sustainable, our results provide a benchmark to estimate the extent to which air pollution reductions can be achieved. We also identify factors that contributed to the magnitude of pollutant reductions, which can help guide future state-level policies to sustainably reduce air pollution.
has issue date	2020-08-06(xsd:dateTime)
bibo:doi	10.1101/2020.08.04.20168237
has license	medrxiv
sha1sum (hex)	0fa3479fb8818a86a249c705efa48d30f3f91d37
schema:url	https://doi.org/10.1101/2020.08.04.20168237
resource representing a document's title	Short-term change in air pollution following the COVID-19 state of emergency: A national analysis for the United States
resource representing a document's body	covid:0fa3479fb8818a86a249c705efa48d30f3f91d37#body_text
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