Mark Hoover, CDC/NIOSH. Mark D. Hoover is a senior research scientist in the Division of Respiratory Disease Studies at the U.S. Centers for Disease Control and Prevention (CDC), National Institute for Occupational Safety and Health (NIOSH), in Morgantown, West Virginia.
This attracts the air from the valley, creating a breeze that blows from the valley floor up towards the top of the mountain. Often birds known as raptors, such as eagles, hawks, condors and vultures, float on these breezes to preserve their energy. This wind pattern is known as a valley breeze.
The warm air rises up through convection, and cooler air from the ocean flows in to take its place. At night the reverse occurs, and the result (at least in late spring and summer, and close to the coast) is what's called a land breeze.. The ocean cools off slower than the land.