Energy in the Earth System. In the Earth system… Energy Flows Matter Cycles Life Webs Dr. Art’s...
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Transcript of Energy in the Earth System. In the Earth system… Energy Flows Matter Cycles Life Webs Dr. Art’s...
In the Earth system…
Energy Flows
Matter Cycles
Life Webs
Dr. Art’s Guide to the Planet Earth, Art Sussman, Ph.D.
Energy flows in the UniverseA hotter radiating body emits shorter wavelengths.
A cooler body emits longer wavelengths.
Greenhouse Effect
Warms Earth Needed for life
to thrive Gases: water vapor
carbon dioxide methane, and nitrous oxide
More than 2 atoms, bound loosely
transparent to incoming visible light
Opaque to IR radiated from Earth
Climate Change
What factors contribute to enhanced greenhouse effect?
Are human activities causing Earth to warm?
Vostok ice core temperature difference from today
-20
-15
-10
-5
0
5
10
0 100 200 300 400Thousands of years before today
Te
mp
era
ture
dif
fere
nc
e (
de
gre
es
F
ah
ren
he
it)
?
Vostok ice core temperature difference from today
-20
-15
-10
-5
0
5
10
0 100 200 300 400
Thousands of years before today
Tem
pe
ratu
re d
iffe
ren
ce
(d
eg
ree
s F
ah
ren
he
it)