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December 2020

WEBINAR Friday Lunch Meeting Research, Olivier Damette, December 18th 2020

18 December 2020

Speaker

Olivier Damette, Professor of Economics at the University of Lorraine, a researcher at BETA and associated with the Climate Economics Chair

Title

Is climate a curse or a bless in the Covid-19 virus fighting?

Abstract
 
Faced with the global pandemic of Covid-19, we need to better understand the links between meteorological factors and the virus and investigate the existence of potential seasonal patterns. In the vein of a recent empirical literature, we reassess the impact of weather factors on Covid-19 daily cases in a panel of advanced and emerging countries between January the first and 28th May 2020. We consider 5 different meteorological factors and go further previous studies. In addition, we give a short-run and medium/long-run time perspective of the dramatic outcomes of the pandemic by both considering infected people (short-run) and fatalities (long-run). Our results reveal that the choice of delays and time perspective of the effects of climatic factors on the virus are crucial as well as Covid-19 outcomes can explain the discrepancies in the previous literature. For the first time, we use a dynamic panel model and consider two different kinds of channels between climate and Covid-19 virus: 1) direct/physical factors related to the survivals and durability dynamics of the virus in surfaces and outdoors and 2) an indirect factor through human behaviors and individual mobility – walking or driving outdoors – to capture the impact of climate on social distancing and thus on Covid-19 outcomes. Our model is estimated \emph{per se} two different estimators and persistence, delays in patterns, nonlinearities and numerous specifications changes are taken into account with many robustness checks. Our work reveal that temperatures and, more interestingly, solar radiation – that has been clearly undervalued in previous studies – are significant climatic drivers on Covid-19 outbreak. Indirect effects through human behaviors ie interrelationships between climatic variables and people mobility are significantly positive and should be considered to correctly assess the effects of climatic factors. Since climate is per se purely exogenous, climate tend to strengthen the effect of mobility on virus spread. The net effect from climate on Covid-19 outbreak will thus result from the direct negative effect of climatic variables and from the indirect effect due to the interaction between mobility and them. Direct negative effects from climatic factors on Covid-19 outcomes – when they are significant – are partly compensated by positive indirect effects through human mobility. Suitable control policies should be implemented to control the mobility and social distancing.
 
 
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The Friday Lunch Meeting will be in french and will take place via the tool Zoom.

The link will be communicated once your complete registration

12:30 pm – 14:00 pm

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