DAILY REVIEW #4 11. Make corrections on quiz. 12. What
different items have been used to determine the paleoclimate?
13.What patterns have occurred in the past climate? 14.What is lake
effect snow and what causes it? End
Slide 3
TOPOGRAPHY Impacted by mountains Orographic Air lifts up Rises,
cools Reaches dew point Rain shadow Precipitation falls on western
(windward) side Dry air on other side Wet area on west, dry area on
east Seattle Colorado
Slide 4
CARBON CYCLE.WHAT? WHY? Movement of C: land, atmosphere, ocean
Why does it matter? Building block of life Many minerals, chemical
processes Significant gases in the atmosphere Major role in energy
balance climate
Slide 5
WHERE IS THE CARBON? (SINKS) Plants Short term storage
Soils/rocks Fossils, fossil fuels Long term storage Atmosphere
Ocean 65% of carbon storage Photosynthesis Shells Absorbed Deep
ocean holds most due to Cold water High pressure Low salinity Long
term storage
Slide 6
WHAT RELEASES CARBON? (SOURCES) Decay Burning Plant material
Fossil fuels Respiration Volcanoes Weathering rock
Slide 7
DAILY REVIEW #5 15.Describe 2 different sources and 2 different
sinks for carbon. 16.Explain why the areas on the map below are
red. Remember red means they are carbon sources. 17.Explain why the
areas on the map below are blue. Remember blue means they are
carbon sinks. 18.(Group time only) Share your carbon model.
End
Slide 8
COMPOSITION OF ATMOSPHERE & GREENHOUSE EFFECT Most sunlight
reaches surface Some reflected Some absorbed Absorbed by surface
objects Heat up Give off IR Hotter = ? IR IR absorbed by greenhouse
gases Keep surface warmer But not too warm Greenhouse gases Main:
water, carbon dioxide, methane (CH 4 ) Others: ozone, nitrous oxide
(N 2 O)
Slide 9
DAILY REVIEW #6 19. How would you describe the greenhouse
effect to your little brother/sister/cousin? 20. What are the most
significant greenhouse gases? 21. What can change the amount of
carbon dioxide in the atmosphere? Describe at least 3 different
things. End
Slide 10
SEASONS Caused by Location in orbit Effected by Tilt May, June,
July Northern Hemisphere Southern Hemisphere Nov., Dec., Jan.
Slide 11
MILANKOVITCH CYCLE Shape of Earths orbit changes Natural Cycles
Evidence in paleoclimate Next Ice Age ~15,000 years All together
similar 440,000 years ago How does it effect climate? Closer to the
Sun = ? 3 ways to change
Slide 12
MILANKOVITCH PART 1 - ECCENTRICITY Orbit is elliptical How
elliptical changes.sometimes more of a circlecircle How does this
effect climate? Cycle = 100,000 years Currently Becoming more
circular How would that effect climate?
Slide 13
MILANKOVITCH PART 2 OBLIQUITY Tilt of Earth changes At maximum
tilttilt Higher seasonal variation Hottest summers, coldest winters
Cycle = 41,000 years Today: Medium tilt How should that effect
climate?
Slide 14
MILANKOVITCH PART 3 PRECESSION Earth wobbleswobbles Caused by
gravity of Sun and Moon Changes when seasons occur during Earths
orbit Today: Summer here when furthest from Sun Summer in Southern
Hemisphere when closest to the Sun How does that effect climate?
Cycle = 26,000 years
Slide 15
HOW ELSE DOES THE SUN CHANGE? Sunspots 11 year cycle High # = ?
Climate Luminosity Increases with age Effect on early Earth
Climate? But there was more CO 2 .