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Title:

Climate

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Title: Climate Author: Local Administrator Last modified by: Jody Michael Robinson Created Date: 3/7/2011 4:00:03 AM Document presentation format – PowerPoint PPT presentation

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Title: Climate


1
Climate
  • What It Means To You

2
Weather
  • Weather is the combination of temperature,
    precipitation, cloud cover, and winds experienced
    daily.

3
Weather
4
Climate
  • Climate is the weather conditions of a place
    averaged over a long period of time.
  • There are many different climate regions in
    Canada and around the world.

5
Climate
  • Climate Graphs measure a locations annual
    precipitation and average temperatures.
  • A red line indicates temperature, while a blue
    bar measures precipitation.

6
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Latitude - Distance from the equator is a key
    factor in determining whether a region is hot or
    cold. The further away from the equator you are,
    the more the energy from the sun is spread out.

7
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Ocean Currents - The temperature of an ocean
    current affects the temperature of the air that
    passes over it.
  • On the west coast, Victoria has a warmer climate
    than expected from its latitude due to the nearby
    warm ocean current. On the east coast, St. Johns
    is cooler due to the nearby cold current.

8
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Wind and Air Masses - An air mass is a large
    volume of air that takes on the climatic
    conditions of the area where it is formed.
  • Air masses originating over water contain more
    moisture which may be released as precipitation.

9
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Wind and Air Masses - Air masses move along the
    earth from high pressure areas to low pressure
    areas causing wind. Around the earth, there are
    prevailing winds. Over Canada the prevailing
    winds blow from west to east (The Westerlies).

10
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Elevation (Altitude) The higher you go up, the
    colder it gets.
  • The bottom of a mountain may have maple trees,
    while the middle may have evergreens (Christmas
    trees), and the top may have no trees.

11
  • Elevation - As air rises, it expands due to the
    lower air pressure. When air expands it cools to
    become water vapour and eventually clouds. Clouds
    can produce precipitation.

12
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Relief the differences in height of an area
    (how much the elevation goes up and down).
  • Mountain barriers create relief precipitation.
    Cool air rising up the mountain condenses to form
    precipitation. As it falls on the other side, it
    contracts and becomes warmer and drier. This
    results in a drier climate, or rain shadow, on
    the leeward slope of the mountain than on the
    windward slope.

13
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Near Water - Areas located in the interior of
    large land masses, far from oceans, and far from
    large lakes have a continental climate. These
    areas have a large temperature range because
    there is no large water body to moderate.
    Continental climates also tend to have low
    precipitation due to distance from a moisture
    source.

14
6 Factors that Affect Climate (L.o.w.e.r.n)
15
6 Factors that Affect Climate (L.o.w.e.r.n)
  • Near Water - Coastal locations have a maritime
    climate. They have a low temperature range due to
    the moderating effect of the large water body.
    The level of precipitation is high because of the
    proximity of the large water body.

16
6 Factors that Affect Climate (L.o.w.e.r.n)
17
Maritime Climate
  • Maritime climates are located close to water, so
    they typically have a lot of precipitation and a
    smaller temperature range.
  • This is experienced in Canadas coastal areas.

18
Maritime Climate
19
Continental Climate
  • Since continental climates are far from large
    bodies of water, they typically have less
    precipitation and a large temperature range.
  • The interior plains of Canada are a good example
    of a continental climate.

20
Continental Climate
21
Which is Continental? Which is Maritime?
22
Which is continental? Which is maritime?
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