8.1/8.2 climate change weather and climate. weather atmospheric conditions in a particular location...
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8.1/8.2 Climate ChangeWeather and Climate
Weather Atmospheric conditions in a particular location over a
short period of time
Includes: temperature, precipitation, wind and humidity
Ex: “A high of 28oC today, sunny with cloudy periods, probability of precipitation is 30%, wind from the west at 20km/hr, and relative humidity of 40%.”
Is Weather always the same?
Some parts of the world, weather stays the same from day to day. ex. Sahara desert is usually hot and dry during the day
Other parts, the weather can change dramatically from one day to the next. ex. Canada: warm and sunny today; cool and rainy
tomorrow- however, patterns exit with seasons
Meteorologists Gather information on weather around the world and use
it to forecast weather for specific areas
What Causes Weather?
Interactions between water and air on Earth and energy from the Sun
Sun heats the atmosphere, creating wind and air movement
Bodies of water evaporate, cool and condense to produce rain or snow
Ocean waters move in currents
Climate The usual pattern of weather in a region over a long period of
time
weather measurements collected over 30 years and results are averaged
climate gives a range of temperatures one might expect at a certain time of year
Ex. Southern Ontario climate: warm and humid during summer and cold with snow during the winter
Determines the type of plants and animals that live in a region
Determines how houses/buildings are designed
Weather or Climate? The temperature high today will be 5oC
We can expect high humidity in July
There will be 11.3 hours of sunshine today
The skies will be partly cloudy
“Climate is what you expect, but weather is what you get.”
Classifying Climate: Climate Zones
determined by temperature , precipitation and plant communities
Tropical, Dry, Moderate, Continental, Polar
Classifying Climate:Climate Zones
Classifying Climate: Ecoregions
New method of classifying climate which focuses on the ecology of the region
Based on landforms, soil, plants, animals and climate
Classifying Climate: Ecoregions
Climate Change Climate change
A change in climate over a long period of time
Global Warming A change in temperature over a long period of
time
Factors Affecting Climate
Distance from the equator (latitude)
Presence of large bodies of water
Presence of ocean or air currents
Land formations
Height above sea level ( altitude)
Homework: Pg 321 # 1-6