Loading your learn pack…
Read the summary, then start training!
The main carbon reservoirs are the atmosphere, terrestrial biosphere, oceans, sediments and fossil fuels, and the Earth’s crust and mantle.
Carbon reservoirs are major stores of carbon interconnected by exchange pathways. The principal reservoirs are the atmosphere, terrestrial biosphere, oceans, sediments and fossil fuels, and the Earth’s crust and mantle. The ocean is the largest actively cycling near-surface reservoir, while most of Earth’s total carbon is stored over long periods in carbonate rocks, kerogens and other geological materials. Terrestrial carbon is held in living and dead biomass and soils, with soils storing carbon for years to thousands of years. Carbon moves between reservoirs through biological, physical, chemical and geological processes. In the fast carbon cycle, photosynthesis removes carbon dioxide from the atmosphere, while respiration, decomposition, combustion and water transport return carbon to the atmosphere or carry it into aquatic systems. The ocean absorbs carbon dioxide directly from the atmosphere and through rivers; marine organisms convert it into organic matter and carbonate shells, some of which sink through the biological pump and become stored in deep waters or sediments. The slow carbon cycle operates over thousands to millions of years through rock weathering, sedimentation, subduction, metamorphism, volcanic activity and tectonic uplift. Human activities have disrupted the balance between reservoirs by burning fossil fuels, producing cement and changing land use. These actions transfer geological and terrestrial carbon to the atmosphere, increasing carbon dioxide concentrations and contributing to global warming. Greater oceanic carbon uptake also forms carbonic acid, lowering ocean pH and altering marine chemistry, while deforestation and ecosystem degradation reduce the land biosphere’s capacity to store carbon.
The main carbon reservoirs are the atmosphere, terrestrial biosphere, oceans, sediments and fossil fuels, and the Earth’s crust and mantle.
The fast carbon cycle transfers carbon among the atmosphere, living organisms, soils and surface waters over years to decades through photosynthesis, respiration, decomposition and combustion.
The slow carbon cycle moves carbon through rocks, sediments, the ocean, crust and mantle over thousands to millions of years through weathering, sedimentation, subduction, volcanism and tectonic uplift.
The ocean absorbs atmospheric carbon dioxide and stores it as dissolved inorganic carbon, marine biomass and sediments; the biological pump transfers some carbon to the deep ocean and seafloor.
Human fossil-fuel combustion, cement production and land-use change have increased atmospheric carbon dioxide and weakened or redirected natural carbon-storage pathways.
Increased carbon dioxide absorption by the ocean causes ocean acidification, which can reduce carbonate formation and affect marine organisms and ecosystems.
A natural store or pool in which carbon is held, such as the atmosphere, ocean, soil, biomass, sediment or rocks.
A physical, chemical, biological or geological process that transfers carbon between reservoirs.
The short-term biological cycle that moves carbon between the atmosphere, organisms, soils and surface waters over years to decades.
The geological cycle in which carbon moves through rocks, sediments, the ocean, crust and mantle over thousands to millions of years.
The living and dead organisms, vegetation and soils on land that store and exchange carbon.
Carbon dissolved in water mainly as carbon dioxide, carbonic acid, bicarbonate and carbonate ions.
The set of biological processes that transfers carbon from surface waters into the deep ocean and seafloor sediments.
The capture and long-term storage of carbon in reservoirs such as soils, biomass, oceans or geological formations.
The decrease in ocean pH caused primarily by the absorption of additional atmospheric carbon dioxide.
A long-term geological process in which rock weathering removes atmospheric carbon dioxide and tectonic and volcanic activity eventually returns it.
“Can you explain what "The main carbon reservoirs are the atmosphere, terrestrial biosphere, oceans, sediments and fossil fuels, and the Earth’s crust and mantle." means in simple terms?”