Local wind patterns II What are Local winds

Local wind patterns II

What are Local winds? Local winds are one of the main types of winds caused by differences in air temperature. The temperature differences often develop through the day as the sun heats the air and land, but they can also be formed when surfaces do not heat or cool evenly

How are the following local wind patterns formed? • Land sea breezes • Mountain and valley breezes • Chinook and Santa Ana winds • Country breeze

Land sea breezes Sea and land breezes are types of thermal circulation systems that develop at the interface of land ocean. During the daytime land heats up much faster than water as it receives solar radiation from the Sun. The warmer air over the land then begins to expand rise forming a thermal low. Daytime

At sunset, the land surface stops receiving radiation from the Sun. As night continues the land surface begins losing heat energy at a much faster rate than the water surface. Wind flow now moves from the land to the open ocean. This type of localized air flow is called a land breez Night time

Mountain and valley breezes A valley breeze develops during the day as the Sun heats the land surface and air at the valley bottom and sides. As the air heats it becomes less dense and buoyant and begins to flow gently up the valley sides. Day time

Mountain and Valley Breezes During the night, the air along the mountain slopes begins to cool quickly because of long wave radiation loss it becomes more dense and begins to flow downslope causing a Mountain breeze Night time

Chinook and Santa Ana winds Chinook wind- warm, westerly wind found in western North America. Canada and the USA, when air from the Pacific blows over the Rocky Mountains and other upland areas. Santa Ana winds- hot, dry, strong, blustery, föhn-type wind which blows from the north-east or east over southern California and carries with it large quantities of dust http: //www. google. co. kr/

Country breeze One of local wind called a country breeze is associated with large urban area As the name implies this circulation pattern is characterized by a light wind blowing into the city from the surrounding country side

How do these local wind patterns affect our daily lives? yellow dust Tornado typhoon Hurricane

reference • http: //www. ask. com/science/local-winds-45330 ad 2 a 772 b 05 • http: //www. upf. br/comarte/? p=584 • http: //www. physicalgeography. net/fundamentals/7 o. html • http: //www. atmo. arizona. edu/students/courselinks/fall 09/nats 101 s 2/lect ure_notes/nov 13. html • https: //reginnovations. org/wind-energy/wrf-wind-simulation-windenergy-production-estimates-forced-different-reanalyses-comparisonobserved-datafor-portugal/ • http: //www. weatherwizkids. com/weather-wind. htm • http: //www. mymodernmet. com/profiles/blogs/list/tag/sandstorm • http: //www. fractaluniverse. org/v 2/? page_id=145