Seasonal variability is the study of how environmental conditions and phenomena change over the course of a year. This can include fluctuations in temperature, precipitation, sunlight, and other factors that are influenced by the Earth's position relative to the sun. Researchers in this area may study how different regions are affected by seasonal changes, how these changes impact ecosystems and wildlife, and how they may be impacted by climate change. Understanding seasonal variability can help scientists predict and prepare for changes in weather patterns and environmental conditions.