Near the equator, temperature varies little. Instead, seasons are defined by rainfall, resulting in Wet (Monsoon) and Dry seasons .
Levels of physical activity often fluctuate with the weather. Studies on public employees in Norway show that commuting habits, such as cycling frequency, are heavily influenced by the time of year. yearly seasons
Seasonal changes in solar heating drive thermohaline circulation shifts. Sea ice extent in the Arctic reaches a minimum in September and maximum in March, affecting global albedo and marine ecosystems. Near the equator, temperature varies little