GEOG 2050 Chapter : Chapter 6
Document Summary
Wind essentials: mercury barometer, torricelli invented it, aneroid barometer, wind: description and measurement, wind, anemometer, wind vane, 1013. 2 millibars, low pressure = bad weather, cold temp = high pressure; high temp = low pressure. Wind direction: winds are named for the direction from which they originate, example: a wind from the west is a westerly wind (its blowing eastward). Beaufort wind scale: named after admiral beaufort of the british navy in 1806. Service standardized the scale in 1955: made based on observations. Driving forces within the atmosphere: these forces determine both speed and direction of wind, gravity, pressure gradient force, coriolis force, friction force, high and low pressure areas exist in the atmosphere principally because. Geostrophic wind: combined effect of pgf and the cf on air currents aloft (upper level, boundary layer). They produce winds that flow parallel to the isobars called geostrophic wind: geostrophic wind doesn"t happen at the surface.
