Carbon dioxide global warming potential

Global warming potential (infra-red absorption) Ozone depletion A compound s ability to absorb infra-red radiation The ability of a chemical to reach the stratosphere and interact with and destroy ozone Global warming potential (GWR) Preferred CWR less than carbon dioxide) Atmospheric lifetime... 

Because of the different properties and lifetimes in the atmosphere associated with each of the GHGs, emissions are typically reported as teragrams (Tg), or million metric tons, of carbon dioxide equivalent, C02eq-The 100-year time horizon global warming potential (GWP) of CH4 is 25 times as potent as CO2, N2O is 298 times as potent as CO2, and the halocar-bons range from 124 to 14,800 times as potent as CO2 (IPCC, 2007). 

Each greenhouse gas differs in its ability to absorb heat in the atmosphere. HFCs and PFCs are the most heat-absorbent. Methane traps over 21 times more heat per molecule than carbon dioxide, and nitrous oxide absorbs 270 times more heat per molecule than carbon dioxide. Often, estimates of greenhouse gas emissions are presented in units of millions of metric tons of carbon equivalents (MMTCE), which weighs each gas by its GWP value, that is, Global Warming Potential. 

Caldeira, K., and J. F. Kasting, Insensitivity of Global Warming Potentials to Carbon Dioxide Emission Scenarios, Nature, 366, 251-253 (1993). 

Gt CO2 equiv. 29 Gt anthropogenic CO2 discharges/year x 100) to the global warming potential (GWP) of actual carbon dioxide discharges from human activity. 

To evaluate the impact of different greenhouse gases, the IPCC introduced the global warming potential [8c[ (GWP), which is a quantified measure of the impact of each gas compared to carbon dioxide, used as a reference, in a defined time and per unit of mass. The relationship between gigagrams of gas and teragrams of equivalent CO2 is the following ... 

Table 1.7 Atmospheric lifetimes (years), global-warming potential (GWP), and ozone-depleting potential (ODP) of different fluorochemicals. The global warming potential of a material is the integrated radiative forcing over 100 years after release of 1 kg divided by the integrated radiative forcing over the same period from release of 1 kg carbon dioxide [29, 31, 32a],...

The database provides also numerical values for the ozone depletion potential and the global warming potential, which are calculated relative to carbon dioxide or to CECll (CCI3F). The EPA regulations for the solvents are indicated. 

The ability of these compounds to absorb infrared radiation varies widely from compound to compound, as does their life in the atmosphere before they undergo photochemical reactions or are absorbed in the oceans or on land. Methane has a concentration of only l.Vppmv in the troposphere, which is much less than that of carbon dioxide. On the other hand, each molecule of methane has a global warming potential (GWP) value that is 21 times that of carbon dioxide over the course of 100 years. (Note the GWP value has been developed to compare the ability of each greenhouse gas to trap infrared radiation over 100 years relative to another gas by convention, carbon dioxide has a GWP of 1.) Although methane has a relatively short lifetime (a few years)... 

On the molecular basis what is the global warming potential for thermal adsorption of nitrous oxide as compared to carbon dioxide ... 

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