Global warming defined

Hydrocarbons (predominantly, NG) are likely to play a major role in hydrogen production in the near- to medium-term future. However, hydrocarbons significantly contribute to anthropogenic C02 emissions into the atmosphere. Spath and Mann [11] estimated that the global warming potential (GWP) of hydrogen production by the SMR process is 13.7 kg C02 (equiv.) per kg of net hydrogen produced. GWP is defined as a combination of C02, CH4, and N20 emissions expressed as C02 equivalence for a 100-year time frame. 

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 ... 

The IPCC defines global warming potential as follows [6] ... 

Global warming potential of a well-mixed gas is defined as the time-integrated commitment to radiative forcing from the instantaneous release of 1 kg of trace gas expressed relative to that from the release of 1 kg of C02. 

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