The region of Earth receiving the Sun's direct rays is the equator. Here, air is heated and rises, leaving low pressure areas behind. Moving to about thirty degrees north and south of the equator, the warm air from the equator begins to cool and sink. Between thirty degrees latitude and the equator, most of the cooling sinking air moves back to the equator.
Oct 30, 2020 · View Copy_of_GLOBAL_WIND_PATTERNS from BIO ap at West Boca Raton High School. GLOBAL WIND PATTERNS The most common wind direction is called the prevailing winds. When Columbus set sail for Asia
This results in the pressure over the land being lower than that over the water. The pressure gradient is often strong enough for a wind to blow from the water to the land. The land breeze blows at night when the land becomes cooler. Then the wind blows towards the warm, low-pressure area over the water.
A) Surface systems depend primarily on wind speeds at upper levels. B) Upper level wind patterns strongly control the origin and development of surface systems. C) Surface lows decrease upper level wind speeds, surface highs increase them. D) There is no strong or consistent relationship. E) Surface systems control the upper level wind patterns.
Instead of one large circulation between the poles and the equator, there are three circulations... Hadley cell- Low latitude air movement toward the equator that with heating, rises vertically, with poleward movement in the upper atmosphere. This forms a convection cell that dominates tropical and sub-tropical climates.
In this cell the air flows poleward and eastward near the surface and equatorward and westward at higher levels. Polar cell- Air rises, diverges, and travels toward the poles. Once over the poles, the air sinks, forming the polar highs. At the surface air diverges outward from the polar highs.