Transcript COSTAL SAND DUNE

Atmosphere
 divided into layers determined by variation of
temperature with height.
 lowest level, Troposphere
 temperature decreases with height up to about
10 km.
 where weather occurs
 http://climate.nasa.gov/ClimateReel/27Storm
s640360/
 Stratosphere : temperature increases
with height.
 The increase in temperature is
caused by absorption of ultraviolet
radiation by the ozone layer
STRATOSPHERE:
 O3 molecule is made of 3 O atoms.
 UV light breaks up O2. Then one O can
combine with O2 to form O3.
 O2 formed by photosynthesis (plants) in
the troposphere. If if were not for plants,
we would not have an O3 layer.
STRATOSPHERE:
 Less mass found here
 Ozone is the most important molecule (in
lower layers of stratosphere; first 10 miles).
 3 pennies stacked up is the size of the O3
layer if condensed down.
 O3 absorbs UV light
 O3 destruction is = to reformation in a healthy
functioning system (O3--- O2 + O)
 Now O3 destruction is happening more than
O3 reformation
 CFC’s; Chlorine portion is the culprit
 Mesosphere: temperature
decreases with height.
 ionosphere, the highest layer in the
atmosphere
 temperatures increase with height due to
ultraviolet radiation.
Piecing Together the Temperature
Puzzle:
 http://climate.nasa.gov/ClimateReel/Temp
eraturePuzzle640360/
Acceleration of Greenhouse
Effect…Global Warming:
 Too much heat is trapped.
 Have measured increase in
greenhouse gases such as CO2
and the rise in temperature for
150 years.
 Two major causes for increase
in CO2: industry/power plants
and automobiles.
CO2 CO2 CO2
CO2
CO2
CO2
CO2
CO2
CO2
 http://climate.nasa.gov/ClimateReel/C
arbonCrisis/
CO2 CO2 CO2
Climate Change
 http://news.discovery.com/videos/global-warming-videos/ (Monitoring
Climate Change)
 Discovery News Global Climate Change Videos
 Tigers Threatened By Climate Change
http://news.discovery.com/videos/animals-tigers-threatened-by-climatechange.html
 Climate Change: 3 Questions with Ralph Keeling
http://news.discovery.com/videos/earth-climate-change-3-questions.html
 Glacier Comparisons: http://news.discovery.com/videos/earth-glaciercomparisions.html
 Monitoring Climate Change: http://news.discovery.com/videos/newsmonitoring-climate-change.html
 Goldilocks and The Greenhouse Effect
http://www.livescience.com/common/media/video.php?vi
deoRef=GoldilocksGreen
 Ozone Depletion & Health Effects:
http://www.epa.gov/ozone/science/movies/index.html
 Ozone Layer in Repair?
http://news.nationalgeographic.com/news/2003/08/0805
_030805_ozone.html
 Northern Lights:
http://www.kqed.org/quest/television/view/466