A carbon sink is a natural or artificial reservoir that accumulates and stores some carbon-containing chemical compound for an indefinite period. The process by which carbon sinks remove carbon dioxide (CO2) from the atmosphere is known as carbon sequestration. Public awareness of the significance of CO2 sinks has grown since passage of the Kyoto Protocol, which promotes their use as a form of carbon offset.
The main natural sinks are:
Absorption of carbon dioxide by the oceans via physicochemical and biological processes
Photosynthesis by terrestrial plants
Natural sinks are typically much larger than artificial sinks. The main artificial sinks are:
Landfills
Carbon capture and storage proposals
Carbon sources include:
Fossil fuels
Farmland; there are proposals for improvements in farming practices to reverse this.
Carbon trading
Carbon emissions trading is a form of emissions trading that specifically targets carbon dioxide (calculated in tonnes of carbon dioxide equivalent or tCO2e) and it currently constitutes the bulk of emissions trading.
This form of permit trading is a common method countries utilize in order to meet their obligations specified by the Kyoto Protocol; namely the reduction of carbon emissions in an attempt to reduce (mitigate) future climate change.
Low-Carbon economy A Low-Carbon Economy (LCE), Low-Fossil-Fuel Economy (LFFE)[1] or Decarbonised Economy[2] is an economy that has a minimal output of greenhouse gas (GHG) emissions into the environment biosphere, but specifically refers to the greenhouse gas carbon dioxide. GHG emissions due to anthropogenic (human) activity are increasingly either causing climate change (global warming) or making climate change worse. Scientists are concerned about the negative impacts of climate change on humanity in the foreseeable future.[3]
Globally implemented LCEs, therefore, are proposed, by those having drawn this conclusion, as a means to avoid catastrophic climate change, and as a precursor to the more advanced, zero-carbon society and renewable energy economy.
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