Chapters - Climate change and the Earth system
16 important questions on Chapters - Climate change and the Earth system
What are the 5 systems in the earth system?
- geosphere (the planet
- hydrosphere (oceans)
- cryosphere (ice systems)
- atmosphere
- biosphere
How does vegetation feedback on climate act?
Which 2 factors make the oceans very important in mediating the climate change effects of greenhouse gases?
2. The oceans also absorb vast amounts of heat—up to 90% of the added heat from human pollution
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What 2 factors create dead zones all over the world?
2. Warmer ocean waters due to climate change
What effect does climate change have on the phosphorus availability?
Elevated temperature reduces soil phosphorus, probably by accelerating decomposition. Precipitation affects soil phosphorus in complex ways, both positive and negative, which largely cancel each other out.
What does the fast carbon cycle involve?
What does the slow carbon cycle involve?
What is the main source of CO2 in the atmosphere?
Where is carbon mainly stored on land and in the sea?
Sea = carbonate rocks, such as limestone, are particularly important in storing carbon of marine origin (from corals or shells)
How does the slow carbon cycle impact climate?
Why should oceans be mixed?
What waters can hold more CO2?
Which pumps move CO2 to deeper parts of the ocean?
2. Solubility
Why is flux between the atmosphere and ocean is small compared to ocean pools?
Why does the biological pump does not play a strong role in modulating atmospheric CO2 from human sources?
What are the planetary boundaries?
- climate
- biodiversity (outside the proposed safe zone)
- nutrient cycling (outside the proposed safe zone)
- land use
- ocean acidification
- freshwater
- the ozone layer
- atmospheric aerosols
- novel entities.
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