Global biogeochemical cycles
10 important questions on Global biogeochemical cycles
Ocean acidification is minimal why does it matter?
What is the ratio of carbon in the ocean compared to the atmosphere?
What is the most important process determining the exchange of carbon between oceans and atmosphere?
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What is the solubility pump?
--> because cold surface water sinks at the poles, more co2 is in deep ocean --> keeps the co2 concentration of the atmosphere lower than the average of the ocean
What is the biological pump?
How much of the organic matter sinks to the deeper ocean?
What is marine photsyntheses and biological pump estimated effect on atmospheric co2 concentration?
What is the airborne fraction ?
What are the sinks of emitted carbon?
31% land/soil
26% ocean
per year*
What factors influence the airborne fraction?
rate of uptake and the maximum amount of storage in the sinks
land: co2 fertilisation effect, soil respiration, n deposition fertilisation , forest regrowth etc
ocean: CO2 solubility (remperature, salinity), ocean currents, stratification, winds, biological activity etc
The question on the page originate from the summary of the following study material:
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