The sun heats the surface of the ocean. This causes water to evaporate. Warm air rises, so updrafts carry moist air upward. As air expands, it cools, and cool air won't hold as much water vapor as warm air. read more
The sun heats the surface of the ocean. This causes water to evaporate. Warm air rises, so updrafts carry moist air upward. As air expands, it cools, and cool air won't hold as much water vapor as warm air. read more
To understand how clouds form, we need to take a step back and examine the processes of evaporation and condensation. Picture a birdbath outside on a hot day. When the temperature of the environment is warm, molecules of water (H 2 O) are energetic and can move more, expanding the distances between them. read more
Clouds form from water vapor (water in gaseous form) present in the atmosphere, when the atmospheric humidity is close to or at 100%. However, in order for the water droplets to form, something called a cloud condensation nuclei (CCN) is needed for the water to condense on to. read more