Author: Gentile Francesco Ficetola; Diego Rubolini
Title: Climate affects global patterns of COVID-19 early outbreak dynamics Document date: 2020_3_27
ID: fcaeoyxd_24
Snippet: We considered two climatic variables that are known to affect the spread of viruses: mean air 15 temperature and vapor pressure, which is a measure of absolute humidity. Previous studies showed that, for coronaviruses and influenza viruses, survival is generally higher at low temperature and low values of absolute humidity (2, 5, 6, 12, 20) . For each country/region, we thus calculated the mean monthly values for temperature (°C) and vapor press.....
Document: We considered two climatic variables that are known to affect the spread of viruses: mean air 15 temperature and vapor pressure, which is a measure of absolute humidity. Previous studies showed that, for coronaviruses and influenza viruses, survival is generally higher at low temperature and low values of absolute humidity (2, 5, 6, 12, 20) . For each country/region, we thus calculated the mean monthly values for temperature (°C) and vapor pressure (kPa) for January, February and March on the basis of the WorldClim 2.1 raster layers at 10 arc-minutes 20 resolution (22) . We relied on WorldClim climatic data because homogeneous data on conditions for the period January-March 2020 are not yet available at a global scale (see e.g.
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