What has undoubtedly influenced the virus’s spread, however, is the human factor: decisions made by governments and individuals alike. While the weather effects are slight, some countries have successfully controlled the virus. The weather can’t be controlled. But our actions can. Nathaniel Lash is a graphics reporter. Stuart A. Thompson is a writer and the graphics director for Opinion. Methodology To calculate the weather effects, researchers compared changes in coronavirus infections with data on temperature, humidity, precipitation, air pressure, wind speed, UV index and pollution in different climates around the world. After validating their statistical method using an epidemic simulation model, they used the statistical model to forecast what would happen as weather changed, based on historical weather patterns. To know how weather will ultimately influence the spread of the virus, researchers need to know how easily it is spreading in each region, while adjusting for changes in behavior […]