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Climate

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Climate weather conditions at one location over a long period of time. Weather atmospheric conditions at a particular location and time. – PowerPoint PPT presentation

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Title: Climate


1
Climate weather conditions at one location over
a long period of time.
  • Weather atmospheric conditions at a particular
    location and time.

2
Seasons
  • Earth is tilted at 23.5 degree angle. The earth
    revolves around the sun every year. (364 ¼ days)
  • Tropic of Cancer and Capricorn mark the farthest
    northern southern points the sun is directly
    overhead at 12 pm.
  • Equinox- twice a year, the days and nights
    throughout the world are equal in length begins
    in fall and spring.

http//www.fourmilab.ch/cgi-bin/Earth/action?opt-
p Look at the location of the sun right now.
BNSC - Earth and Moon Earths rotation
3
Greenhouse Effect
Greenhouse Effect - animated diagram
  1. Earth receives energy from the sun solar
    radiation
  2. Earths surface absorbs solar energy, then
    releases it back to space as infrared radiation
    (IR).
  3. Some of the IR radiation emitted by the earth is
    unable to escape back into space.
  4. The trapped IR radiation returns to the earth as
    heat.

1.
2.
3.
4.
BBC - Weather Centre - Climate Change -
Greenhouse Effect Watch the greenhouse effect in
action
4
What is Global Warming?
  • Global Warming YES!
  • The three main gases that trap IR radiation on
    earth
  • Carbon dioxide CO2
  • Methane CH4
  • Water H20
  • The earths temperature has been steadily rising
    since mid 1900s due to human consumption.
  • USA Australia are the only 2 countries that
    have not agreed to the Kyoto Protocol.
  • Global Warming NO!
  • The earths temperature goes through recurring
    cycles of warming and cooling trends.
  • Data is inconclusive regarding.
  • Rather than being made by an outside agency to
    reduce greenhouse gases, President Bush developed
    a plan where industries could voluntarily cut
    gases by 4.5 by 2010.

5
Global Wind Currents
  1. Wind, ocean currents help distribute the suns
    heat worldwide.
  2. Convection is the upward motion of air that
    transfers heat into the atmosphere.
  3. Coriolis Effect the bending of winds due to the
    earths rotation.
  4. Ocean currents resemble rivers flowing in the
    ocean.
  5. Warm water flows from the equator toward the
    poles, while cold, polar water flows toward the
    equator.

6
Types of Precipitation
Send in the Clouds Click here for various types
of clouds.
Mid-latitude frontal storms feature cold dense
air masses that push lighter warm air masses
upward causing precipitation to form.
Typical of hot climates, convection occurs after
morning sunshine heats warm moist air. Clouds
form in the afternoon and rain falls.
Associated with mountain areas, orographic storms
drop more rain on the windward side of a mountain
and create a rain shadow on the leeward side.
7
Types of Climates
  • Cut and paste your blank world map into your
    climate folder.
  • Make a key using 12 different colors for each
    type of climate zone.
  • As we discuss types of climates, color in the
    appropriate areas on the globe.
  • Use pgs. 60 and 61 in your textbook as a guide.
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