MSC- Climate Change
Terms
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- What is Stratospheric Ozone
- Good ozone, protects from UV
- What depletes stratospheric ozone?
- CFCs, methyl bromide, nitrous oxide
- What is Tropospheric ozone? and what causes it
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Bad ozone
Urban polution, from interaction of hydrocarbons, oxides of nitrogen and sunlight(smog)-cars - What causes Global Warming
- greenhouse gasses: Carbon dioxide, methane, nitrous oxide, CFCs
- Where does CO2 come from?
- Fossil Fuel combustion from internal combustion engine, power plants
- Where does methane come from?
- Rice paddies, ruminants, landfills, leakage from natural gas pipelines
- Where does Nitrous Oxide come from?
- fertilizer decomposition in soil
- What are they main gases in the Atmosphere and what are their percentages
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Nitrogen- 78%
Oxygen- 21%
Argon- 1% - What are the trace gases in the atmosphere and how many ppm? (hint- the same ones that cause global warming)
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Carbon dioxide- 350ppm
methane- 1.7 ppm
nitrous oxide- .3 ppm - What organisms do 50% of global photosynthesis
- marine photoplankton
- What is the Biological Pump?
- it removes CO2 from the atmosphere to deep ocean
- The addition of Iron to High Nutrient Low Chlorophyll regions might stimulate what?
- The biological pump, therefore climate change
- What are some problems with Fe fertilization to curb global warming?
- Although there was more CO2 uptake, there was no eveidence that more fixed C descended into deep ocean. Also FE could cause more production of nitrous oxide.
- What kind of Climate Change is caused by global warming?
- Slower thermohaline circulation causes colder Europe
- What kind of severe weather is caused by global warming?
- droughts, excessive rainfall, more hurricanes, more temp difference btw poles and equator
- What are some effects of the sea-level rise caused by global warming?
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Coastal flooding
submersion of islands - In 1998, what were the CO2 emissions per capita in US, Europe, Asia?
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US- 5.4 tons/person/yr
Eu- 1.9 t/p/y
Asia- .3 t/p/y - What level do we need to maintain in the world of CO2 emissions to level out CO2 at 400ppm?
- .4 tons/person/year
- What will happen if CO2 stabilizes at 550ppm?
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Global avg temperature will go up 5.5 degrees C
Sea level go up 6m