In meteorology, the process by which weather fronts form and develop between masses of air with different temperatures and properties.
From 'front' (meteorological) + Greek 'genesis' (origin, creation). This term emerged in 20th-century weather science as meteorologists developed new concepts for understanding atmospheric dynamics.
Frontogenesis is still a mysterious process—meteorologists can observe it happening but predicting exactly when and where weather fronts will form remains one of the hardest challenges in forecasting because of chaotic atmospheric interactions.
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