climate and weather
DESCRIPTION
Climate and Weather. Weather. Combination of temperature, precipitation, cloud cover, and wind experienced on a day-to-day basis. Climate. The weather conditions of a place averaged over a long period of time. Why does Canada’s climate have so much variety?. - PowerPoint PPT PresentationTRANSCRIPT
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CLIMATE AND WEATHER
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Weather Combination of temperature,
precipitation, cloud cover, and wind experienced on a day-to-day basis
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Climate The weather conditions of a place
averaged over a long period of time
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Why does Canada’s climate have so much variety?
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Canada extends for a great distance from North to South
Different elevations produce different climate conditions
Coastal regions have different climates from inland regions
Wind and pressure systems move whether systems from one part of the country to another
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6 Factors that Affect Climate
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Latitude Distance from the equator is a key factor
in whether a region is hot or cold Places closer to the equator are hotter As you move away from the equator,
toward the poles, it gets colder
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LatitudeEnergy from the sun that hits the earth at the equator covers a small area. The same amount of energy that hits the earth at a more northerly or southerly location is spread over a smaller area because of the curvature of the earth.
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Ocean Currents An ocean current is an underwater ‘river’
that circulates through the ocean. There are three main currents in the world.
Warm currents heat the air above the water and lead to warm, moist climate
Cold currents lead to cold, dry climate
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Ocean Currents Fun Fact-The
meeting of warm currents and cool currents causes fog
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Wind and Air Masses• Air masses (large bodies of air with similar
characteristics (temperature and moisture)) that develop over an ocean contain moisture. As it moves over the land, it releases some form of precipitation
• Air masses that develop over an inland area will be dry because they are far from a body of water
• Wind carries with it weather conditions from the area it originates
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Elevation Elevation is the height
above sea level The higher the elevation,
the colder the temperatures
Example- As you go up a mountain, the temperature drops. As you go back down, the temperature rises.
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Elevation As warm air rises, it expands because
there is less air pressure. As it expands, it loses heat.
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Relief Relief refers to differences in elevation
of the earth’s surface Mountain ranges act as barriers to the
movement of air masses
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Example- Vancouver has warm, rainy weather in the winter while Calgary, on the other side of the mountain range, has cold, dry weather.
Mountains also cause precipitation called relief precipitation
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Nearness to Water Large bodies of water (oceans and bays)
heat up and cool down more slowly than the surrounding land.
Winds blowing off the water onto the land keep it warmer/cooler than if there were no water at all
This moderates the temperatures of locations near large bodies of water
Example: Vancouver has a moderately warm, moist climate because of it’s nearness to the Pacific Ocean
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Types of Climate
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Maritime Climate Location is near water Warm winters and cool summers Lots of precipitation (rain and snow) Examples:
Halifax, Nova ScotiaVancouver, British Columbia
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Continental Climate Location is away from water Hot summers, cold winters Extreme temperatures Little precipitation (rain or snow) Examples
Interior Plains (Calgary, Regina etc)
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