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LOOKING AHEAD
UNIT D
Climate Change
CHAPTER 9
Earth’s Climate:Out of Balance
CHAPTER 8
Earth’s ClimateSystem and
Natural Changes
CHAPTER 10
Assessing andResponding to
Climate Change
DUNIT
How Is Climate Different from Weather?
Weather - the conditions outside on a particular day, can be determined by looking outside
Climate - the usual pattern of weather in a region over a long period of time. To determine the climate in a region, you would need to study the weather for about 30 years.
Describing Weather
Meteorologists – scientists who study weather provide information about:temperatureprecipitationwind speedrelative humidity (amount water vapour in air)atmospheric pressure (force exerted by weight of air above)cloud covertoday’s weather?Current Weather - The Weather Network
Newer system of classifying climate based on:landforms, soil, plants and animalsclimatehuman factors (cities, farming practices…)
2. Ecoregions
series of graphs that show temperature and moisture conditions in a region
only describe climate can make climate projections into future Canadian Climate Impacts and Scenarios
3. Bioclimate Profiles
The following factors determine the climate for a location:
LOWER Near WaterLatitude: as you move away from the equator, the sun’s rays are
less direct. Therefore, the temperature decreases.Ocean Currents: The temperature of the ocean current affects the air
that passes over it.Winds: The prevailing winds are the established pattern of
winds. These winds move the air masses that effect our weather.
4. Climate Factors
Elevation:It gets colder as the elevation increases. As air moves up, is expands because air pressure is less. As expands, it loses heat. 1oC/100mRelief:Windward side of a mountain range is warm and wet. The leeward side of a mountain range is warm and dry.Near Water:Water has a moderating effect on temperature. In the summer, it keeps the air over it and nearby cooler. In the winter, it causes the temperatures to be warmer.