EQ1 Flashcards
What is a carbon sink?
A source that takes in more carbon than it emits
What is a carbon source?
A store that emits more carbon than it stores
What is carbon sequestration?
The transfer of carbon from the atmosphere to other stores
What is a carbon flux?
A flow of something within the carbon cycle
Carbon sequesteration
Carbon being transferred from the atmosphere into another form
Anthroprogenic climate variability
Climate change that is caused by human behaviour
Terrestrial carbon store
Carbon that is stored in the Earth
Plant materials
Biomass
Microorganisms which break most organic matter down into carbon dioixde
Oceanic carbon store
Carbon dioxide dissolves in the water
Photosynthesis of phytoplankton, take in dissolved carbon, convert it into carbohydrates for energy
Atmospheric carbon store
Carbon dioxide and methane store carbon as greenhouse gasses
Terrestrial ecosystems
Carbon dioixde is taken from the atmsophere by plant photosynthesis
Carbon is stored organically
Especially in trees and plants
Geological carbon stores
Carbon is found in sedimentary rocks
Oceanic carbon store
Most carbon is dissolved in the form of inorganic carbon
Sedimentary rocks formation
Shellfish and phytoplankton build their shells by combining calcium with carbon
They die and accumulate on the floor
They become compressed and form rocks
Which type of water can hold my carbon dioxide?
Cold water
Carbon pump
Circulates and stores carbon
Biological carbon pumps
Move carbon dioxide from the ocean surface to marine plants called phytoplankton
Converts carbon dioixde into food for phtoplankton
The rest is recycled and converted into deep water carbon stores
Physical carbon pumps
Move carbon from different parts of the ocean in downwelling and upwelling currents
Downwelling
Cold water sinks below warm water
Cold water is able to store more carbon
Carbon is stored deeper in the ocean
This forms the slow carbon cycle
Upwelling
Cold water returns to the surface By the process of upwelling
Some of the carbon dioxide is returned to the atmosphere
Carbonate pumps
Organisms die
They become compressed
Store carbon in the form of calcium carbonaye
Terrestrial sequesteration
Plants sequester carbon during photosynthesis
When animals consume plant matter they also take in carbon
Peat bog (carbon storage)
Material accumulates, traps carbon
Store twice as much carbon as the worlds largest tropical peatland
How has burning peatlands increased carbon dioxide in the atmosphere?
Burning peatlands
Carbon dioxide escapes into the atmosphere
Released from storage
How has urbanisation increased the amount of carbon in the atmosphere?
More Cars more factories
More GHG emissions