What is the primary cause of all weather phenomena?

The primary cause of all weather phenomena is heat exchange, which encompasses the transfer of thermal energy between the Earth's surface and the atmosphere. This process drives temperature variations and creates atmospheric dynamics that influence weather patterns.

As heat from the sun warms the Earth's surface, it creates areas of varying temperatures. This temperature differential results in pressure differences because warmer air tends to rise and cooler air sinks. These changes in air pressure are fundamental to forming wind, which is a critical component of weather. Furthermore, the movement of air masses and their interactions due to heat exchange leads to the development of clouds, precipitation, storms, and other meteorological conditions that we experience as weather.

Other factors, such as humidity fluctuations and pressure changes, do contribute to specific weather conditions. However, they are secondary effects of heat exchange, which is the driving force behind all weather phenomena. Understanding that heat exchange plays the main role helps to explain the mechanics of weather systems and their evolution over time.