Carbon is the chemical element with symbol C and atomic
number 6. As a member of group 14 on the periodic table, it is nonmetallic
and tetravalent—making four electrons available to
form covalent chemical
bonds. There are three naturally occurring isotopes, with 12C
and 13C
being stable, while 14C is radioactive, decaying with a half-life
of about 5730 years.
Carbon is one of the few
elements known since antiquity.
The name "carbon" comes from Latin language carbo, coal.
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Related Tags: carbon, carbon dioxide
Search the Web for CarbonUmbrella term referring to the act of measuring and reporting on an organization's greenhouse gas emissions.
Carbon accounting procedures typically aim to measure and report on the emissions that a company is directly responsible for, but they can also track emissions that result from a firm's supply chain and the activities of its partners, customers and staff.
The practice is widely regarded as an essential first step towards cutting carbon emissions.
However, critics have argued that its effectiveness is undermined by an absence of international standards, which means that carbon calculations can be undertaken differently from organization to organization.
This is a form of life which uses carbon as a 'building block' in its cells and chemical processes. Basically all life (be it plant or animal) on Earth is 'carbon based' in one form or another.
An amorphous form of carbon, produced commercially by thermal or oxidative decomposition of hydrocarbons and used principally in rubber goods, pigments, and printer's ink.
Carbon Capture and Storage (CCS) is an approach to mitigating global warming based on capturing carbon dioxide from large point sources such as fossil fuel power plants and permanently storing it away from the atmosphere.
A market-driven way of reducing the impact of greenhouse gas emissions; it allows an agent to benefit financially from an emission reduction. There are two forms of carbon credit, those that are part of national and international trade and those that are purchased by individuals.
All parts (reservoirs) and fluxes of carbon. The cycle is usually thought of as four main reservoirs of carbon interconnected by pathways of exchange. The reservoirs are the atmosphere, terrestrial biosphere (usually includes freshwater systems), oceans, and sediments (includes fossil fuels). The annual movements of carbon, the carbon exchanges between reservoirs, occur because of various chemical, physical, geological, and biological processes. The ocean contains the largest pool of carbon near the surface of the Earth, but most of that pool is not involved with rapid exchange with the atmosphere.
Related Tags: environment, global warming
Search the Web for Carbon CycleA metric measure used to compare the emissions from various greenhouse gases based upon their global warming potential (GWP).
The enhancement of the growth of plants as a result of increased atmospheric CO2 concentration. Depending on their mechanism of photosynthesis, certain types of plants are more sensitive to changes in atmospheric CO2 concentration.
Carbon movement; movement of organic compounds through an ecosystem. Specifically, the relationship between carbon dioxide absorbed by green plants and carbon dioxide respirated by various organisms.
Related Tags: ecology, environment
Search the Web for Carbon FluxCarbon Footprint refers to the the total greenhouse gas emissions that result from a person, organization, product or service over a given time.
It tends to act as an umbrella term for any attempt to measure greenhouse gas emissions and as a result can refer to simply the emissions that result from a single activity, such as flying; the emissions that result from an organization or building over the course of a year; or the full lifetime emissions of a product or organization, including emissions from the supply chain or disposal of resources.
While carbon footprints colloquially refer to the amount of CO2 emitted, the UK Carbon Trust endorses a wider definition and considers all six of the Kyoto Protocol greenhouse gases - Carbon dioxide, Methane, Nitrous oxide, Hydro fluorocarbons, Perfluorocarbons, and Sulfur hexafluoride - when measuring a carbon footprint.
Carbon Fraud is an aspect of global carbon markets.
Basically due to weak certification and validation processes in carbon markets, it is often quite easy to operate a 'fake' carbon offsetting business; i.e. claiming to run an offshore forest preservation scheme generating carbon credits when no such thing exists in reality (i.e. just pocket the money).
Also, due to the difficult nature of assessing exactly how much carbon some scheme or process offsets, you can also get fraud through over estimating the amount of carbon offset.
It is understood in some regions that organized crime has got involved in carbon markets, and that some markets have had to be suspended to investigate systematic fraud.
The relative amount of carbon emitted per unit of energy or fuels consumed
The theory that policy measures designed to reduce CO2 emissions in one country or region will result in an increase in emissions in another country as carbon intensive firms relocate to areas with less demanding environmental regulations.
For example, it is feared that steel plants and other heavy industries faced with planned carbon pricing regulations in the US may move their operations to countries such as China or India that do not have carbon pricing schemes in an attempt to avoid increased costs.
As a result, carbon emissions could simply "leak" from one country to another, resulting in no net reduction in emissions.
The Kyoto Protocol and the EU Emissions Trading Scheme have both been accused of causing carbon leakage, although there is little solid evidence as yet of firms relocating solely as a result of carbon regulations.
One of the primary drivers for a global agreement to tackle climate change is the hope that an international deal would remove the risk of carbon leakage by establishing comparable carbon regulations for all countries.
A colorless, odorless, poisonous gas produced by incomplete fossil fuel combustion.
Compensating for the amount of carbon dioxide an entity generates through either obtaining energy from renewable sources or offsetting.
Related Tags: carbon, carbon trading
Search the Web for Carbon NeutralA Carbon Offset is a financial instrument representing a reduction in greenhouse gas emissions.
Carbon Pollution refers to the human produce Co2 that is meant to be harming the environment.
Related Tags: carbon tax
Search the Web for Carbon PollutionThe reservoir containing carbon as a principal element in the geochemical cycle.
Limiting the amount of carbon you use each year.
The uptake and storage of carbon. Trees and plants, for example, absorb carbon dioxide, release the oxygen and store the carbon. Fossil fuels were at one time biomass and continue to store the carbon until burned.
Related Tags: carbon cycle
Search the Web for Carbon SequestrationCarbon reservoirs and conditions that take in and store more carbon (carbon sequestration) than they release. Carbon sinks can serve to partially offset greenhouse gas emissions. Forests and oceans are common carbon sinks.
Related Tags: climate change, global warming, environment
Search the Web for Carbon SinksA Carbon Tax is a government imposed taxation on source goods and services in an attempt to reduce the production of carbon into the atmosphere.
Usually implemented as a form of 'at source' taxation; i.e. those whom manufacturer or consume the most carbon pay and everybody else on the supply chain picks up the price increase. This is often encountered with a carbon credit scheme, by which carbon producers can 'offset' their taxable carbon emissions against less carbon intense production methods.
As always with such schemes, the devil is in the detail; in particular there has been problems in the past with carbon fraud.
Note: This equally applies to the energy production sector as basic manufacturing; say if coal is being used as a source of electrical power.
A compound consisting of one carbon atom and four chlorine atoms. It is an ozone depleting substance. Carbon tetrachloride was widely used as a raw material in many industrial applications, including the production of chlorofluorocarbons, and as a solvent.
The sale and purchase of carbon credits or pollution permits through carbon markets.
The practice is designed to help control carbon dioxide emissions by placing a price on a ton of emitted CO2 and providing members of trading schemes with economic incentives to reduce the amount of pollution they produce.
The market is dominated by cap-and-trade schemes, such as the EU's emissions trading scheme, but carbon trading can also refer to the sale of carbon offsets from emission reduction projects.
In theory, carbon trading mechanisms mean that emission reductions are achieved at the lowest possible cost, as businesses will only purchase carbon credits - effectively paying someone else to cut emissions for them - if they can not deliver emission reductions at a lower cost themselves.