The interaction of air, land, water, ice and living things to determine Earths global climate....
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Transcript of The interaction of air, land, water, ice and living things to determine Earths global climate....
![Page 1: The interaction of air, land, water, ice and living things to determine Earths global climate. Climate System Air Land WaterIce Living Things.](https://reader035.fdocuments.us/reader035/viewer/2022062223/5516607e550346a2698b5160/html5/thumbnails/1.jpg)
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The interaction of air, land, water, ice and living things to determine Earth’s global climate.
Climate System
Air
Land
WaterIce
Living Things
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The Sun
Earth’s Energy Budget
Components of Earth’s climate System
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Nearly all of the energy on Earth comes from the sun
3 types of radiation:▪ Ultraviolet radiation (invisible, high energy)▪ Visible light▪ Infrared radiation (invisible, low energy)
Earth absorbs energy from sun
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About 30% of energy from sun is reflected back to space by clouds, particles in atmosphere and Earth’s surface
70% is absorbed by Earth’s surface, clouds and certain gases in atmosphere
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As Earth absorbs energy, it gains thermal energy and temperature rises
The surface then emits lower energy infrared radiation back out
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A. Atmosphere – gases surrounding earthB. Hydrosphere - liquid water, water vapour and
ice C. Lithosphere - solid rock, soil, minerals (Earth’s
crust )D. Living things – all plants, animals, bacteria, etc.
Each of these components receive the sun’s energy, traps it, stores it, and transports it
from one place to another until it all radiates back out to space
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5 main levels:
•Troposphere
•Stratosphere
•Mesosphere
•Thermosphere
•Exosphere
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TrophosphereThis is the air we breathe:
78% nitrogen 21% oxygen 1% mix of argon, carbon dioxide,
helium, hydrogen and ozone
This is where weather occurs
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Prevents harmful UV radiation from reaching us
The “hole” in the ozone layer Antarctica and Arctic both have “thin” ozone layers Caused by CFCs – chlorofluorcarbons (pressurized spray cans,
refrigerators, air conditioners) Chlorine reacts with ozone molecules and destroys ozone
layer
1987 – Montreal Protocol governments around the world signed an agreement to stop
the production and use of CFCs success story and ozone recovering – 50 more years until
original thickness?
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Harmful to humans health, damages buildings, affects plants and animals
UV RAYS + EXHAUST FROM CARS = TOXIC CHEMICALS + GROUND LEVEL OZONE
Photochemical Smog
Drive Clean • reduce smog-causing emissions from cars • all cars over 5 years old must be tested every two years
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Liquid water, water vapour and ice
Water cycle
Factors that affect climate Presence of large bodies of water Presence of ocean or air currents
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•energy absorbed when water evaporates from oceans and lakes cools it’s surroundings
•Energy given off when water vapour condenses into clouds warms surroundings
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Earth’s crustsolid rock, soil, and minerals –
absorb energy
Factors that affect climate Land formations Height above sea level (altitude)
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Plants and animals change gases in the atmosphere photosynthesis and cellular respiration
Carbon dioxide and methane absorb infrared radiation if amount of carbon dioxide or methane
changes it affects how much radiation is absorbed
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A closer look at factors that affect climate
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A. Distance from equator (latitude)
B. Presence of large bodies of water and presence of ocean or air currents
C. Land formationsD. Height above sea level
(altitude)
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Latitude plays a role in determining climate because energy from the sun hits the Earth’s surface at different angles
•Closer to equator the sun’s rays hit more directly
•Closer to poles the sun’s rays hit the earth on an angle and energy spreads across a larger area and must go through more of the atmosphere
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Climate Zones and Large Bodies of Water
Water absorbs and stores more thermal energy than land does This water heats up and cools down slower than
land does
Regions near ocean or large lake cooler in the summer than inland because water
takes a long time to warm up warmer in the fall as the water slowly loses thermal
energy Regions downward of water get more snowfall in
winter
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Ice 2% of eath’s water is frozen
mostly at poles (Arctic Sea Ice and land-based ice sheets in Antarctic)
Also in glaciers in mountains – icebergs are glacier pieces that fell into the ocean
Permanent ice reflects more radiant energy than surfaces covered in soil, rock or vegetation much energy is reflected – adds to
coldness factor
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Land formations
clouds blow up mountains and lose their moisture as rainfall
Other side of mountain - rain shadow effect
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atmosphere pressure is lower the higher you go because there is less air above pushing down
Causes air from lower altitudes rises to higher ones – the air expands and cools down