The role of weather conditions in COVID-19 transmission: A study of a global panel of 1236 regions

https://doi.org/10.1016/j.jclepro.2021.125987Get rights and content

Highlights

  • Examine the weather effect on transmission with a rich dataset of 1236 global regions.

  • Measure the roles of lockdown and social distancing in transmission.

  • Remote sensing satellite data are applied to measure the population movement.

  • Low-income countries would suffer more than the high-income when temperature drops.

  • A dynamic government policy is deserved to mitigate COVID-19 transmission in winter.

Abstract

It is believed that weather conditions such as temperature and humidity have effects on COVID-19 transmission. However, these effects are not clear due to the limited observations and difficulties in separating impact of social distancing. COVID-19 data and social-economic features of 1236 regions in the world (1112 regions at the provincial level and 124 countries with the small land area) were collected. Large-scale satellite data was combined with these data with a regression analysis model to explore the effects of temperature and relative humidity on COVID-19 spreading, as well as the possible transmission risk by seasonal cycles. The result shows that temperature and relative humidity are negatively correlated with COVID-19 transmission throughout the world. Government intervention (e.g. lockdown policies) and lower population movement contributed to decrease the new daily case ratio. Weather conditions are not the decisive factor in COVID-19 transmission, in that government intervention as well as public awareness, could contribute to the mitigation of the spreading of the virus. So, it deserves a dynamic government policy to mitigate COVID-19 transmission in winter.

Keywords

Weather condition
Covid-19
Transmission
Subnational data
Government intervention

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