Research Spotlight: Is the weekend effect anthropogenic or natural?


  • Mohi Kumar,

  • Ernie Tretkoff


It has been suggested that human activity causes a “weekend effect” in which meteorological variables show weekly cycles. For instance, researchers have observed that the difference between daily maximum and minimum temperatures (diurnal temperature range) increases during the weekends. Precipitation, wind, and cloud cover have also been shown to have weekly cycles in some locations. However, some studies have suggested that weekly changes in atmospheric conditions may have natural, not anthropogenic, causes.