Welcome to OneSharedEarth, where you can have questions answered about any environmental issue, supported with facts and research
0 votes
59 views
What are the different GHGs emitted by human activity that contribute to total greenhouse gas emissions?
in Climate change by (1.7k points)
retagged by | 59 views

1 Answer

0 votes

Global greenhouse gases emitted by human activities are given below.

GasChemical Formula% contribution to global greenhouse gas emissionsSourcesGlobal Warming Potential (GWP100)*Length of stay in the atmosphere
Carbon DioxideCO276Burning fossil fuels & wood, deforestation, land clearing for agriculture1Some is absorbed quickly (for example, by the ocean surface), but some will remain in the atmosphere for thousands of years
MethaneCH416Production and transport of some fossil fuels, agricultural activities, waste management, energy use, biomass burning21-28About a decade
Nitrous OxideN2O6Fertiliser use, fossil fuel combustion, industrial activities265-310More than a century
Fluorinated gases or F-gasesGroup of gases that contain fluorine, including hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6)2Industrial processes, refrigeration, a variety of consumer products. Sometimes used as substitutes for ozone-depleting substances such as chlorofluorocarbons (CFCs).Hundreds to thousands depending on the exact gasCenturies

(*) IPCC keeps updating GWP values with each of its scientific assessment reports as its scientific understanding improves. See “What Is Global Warming Potential?” (OneSharedEarth, 2020) for more.

 

Bibliography

Global Greenhouse Gas Emissions Data” (US Environmental Protection Agency, 2016)

Climate Change Indicators: Greenhouse Gases” (US Environmental Protection Agency, 2017)

Understanding Global Warming Potentials” (US Environmental Protection Agency, 2019)

by (1.7k points)
edited by
130 questions
145 answers
6 comments
2,010 users