Weather, mobility and the evolution of the Covid-19 pandemic

Corinna Ghirelli, Andrea Gonzalez, Jose Luis Herrera and Samuel Hurtado

Journal of Economic Studies, 2022, vol. 50, issue 3, 625-641

Abstract: Purpose - The authors investigate the effect of weather and mobility on the spread of the Covid-19 pandemic. Design/methodology/approach - The authors first estimate the effective reproduction number (Rt) as a proxy of the spread of the Covid-19 pandemic and then study the relationship between the latter and weather and mobility in a panel data framework. The authors use US daily infections data between February and September of 2020 at the county level. Findings - The authors find that lower temperatures are associated with a higher Rt, and this effect is greater at temperatures below 0°C. In addition, mobility reductions related to certain types of locations (retail and recreation, transit stations and workplaces) are effective at reducing Rt, but it is an increase in the time spent in parks that most helps reduce the spread of the pandemic. Originality/value - The estimates imply that a 20°C fall in temperature from summer to winter would increase Rt by +0.35, which can be the difference between a well-controlled evolution and explosive behavior of the spread of the virus. Applying these coefficients estimated with US county data to aggregate series from other countries helps explain the resurgence of the pandemic in the Northern Hemisphere during the winter of 2020. The results show that mobility reduction and social distance are best policies to cope with the Covid-19 outbreak. This strong policy lesson will help facing similar outbreaks in the future.

Keywords: Pandemic; Covid-19; Coronavirus; Weather; Mobility; Panel data; C23; I12; I18 (search for similar items in EconPapers)
Date: 2022
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Citations: View citations in EconPapers (1)

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Working Paper: Weather, mobility and the evolution of the Covid-19 pandemic (2021)
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Persistent link: https://EconPapers.repec.org/RePEc:eme:jespps:jes-01-2022-0032

DOI: 10.1108/JES-01-2022-0032

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