8. Air Pressure and Winds

The west coast is quite windy and cold at daytime by the shore of Piper Lagoon Park, Nanaimo, British Columbia (Canada)

Sea Breeze

Sea breeze usually occurs at daytime when cold air is introducing towards the land, causing the ocean shore to experience cool winds throughout the day. This phenomenon contains a circulation (cell) created between high and low pressure of the sea and land respectively, while it also involves with the heating of land and sea. In daytime, the land warms up quicker than land and experiencing low pressure gradient. The warm air is then rising (while decreasing air temperature) and moving into the highly pressured ocean, where the cool air sinks down into the ocean and bringing them back to the land. When I was in Piper Lagoon Park in Nanaimo (B.C. Canada), I experienced a lot of cold winds blowing from the ocean while sitting by the shore. Now I understand why it is so windy down by the shore in daytime.