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Geography 12 unit 3
Warm air pulled across a cold surface cools and dew point is reached resulting in advection fog.
Large mass of air which has relatively uniform temperatures and moisture.
The percentage of solar radiation reflected back to space.
Instrument which measures wind speed.
another name for a high pressure area.
Compass direction in which a slope faces. In northern hemisphere wasmest slopes have a southern aspect.
an instrument that measures atmospheric pressure.
A warm dry wind which brings warming effect to areas on the eastern side of the Rockies. Calgary experiences Chinook winds several times in winter.
High cloud made of ice crystals. Usually seen ahead of approaching warm front.
The leading edge of a cold air mass.
Heating of the atmosphere by the earth causes air to warm and rise, resulting in rising convection currents. As rising air cools, the water vapour condenses and clouds and precipitation occur.
Force created by the spinning of the earth. This force deflects winds to the right in the northern hemisphere and to the left in the southern hemisphere.
Cloud which builds vertically. Produces heavy rain, hail thunder.
Area of low atmospheric pressure.
Area of no winds in the equator area.
Droplets of condensed water vapour.
the temperature at which the water vapor in the air becomes saturated and condensation begins.
Environmental Lapse Rate
A drop in temperature occurs at elevation. Temperature goes down by 1ºC per 150 Meters.
warming that results when solar radiation is trapped by the atmosphere.
Warm air Rises, Low pressure.
Cold air sinks, High Pressure.
High to low.
A tropical disturbance with wind speeds exceeding 120 km/h. Distinctive feature of all hurricanes is the "eye"."
Lines joining areas of equal pressure on weather maps.
Latitude, Altitude, Cloud Cover, Seasons, Aspect, Prevailing winds, Ocean Proximity, Ocean Currents, Pollution.
When a faster moving Cold front over takes a Slow moving Warm front.
On still clear nights when ground cools rapidly, the ground cools the air in contact with it. Dew point is reached. The condensing water vapour is the fog we see.
precipitation that occurs when relatively warm, humid air is forced to rise over an elevated landform.
Precipitation which results when two air masses of different temperatures meet and the warm air is forced over the cooler air.
The sun heats the ground, which in turn heats atmosphere. Air rises, as it rises cooling takes place, forcing temperature to reach dew point.
Layers of the Atmosphere
Troposphere, Stratosphere, Mesosphere, Thermosphere (Ionosphere & Exosphere).
movement of air from land to sea at night, created when cooler, denser air from the land forces up warmer air over the sea.
movement of air from sea to land during the day when cooler air from above the water moves over the land, forcing the heated, less dense air above the land to rise.
Cold flow of air traveling downward or down a slope.
Air current or wind rising up a slope.