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.
after sunset, the sea breeze dies down. by late evening, surface winds begin to blow offshore as a land breeze. the change in wind direction is cause by a reversal in heat differential between land and water.