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Which greenhouse gas contributes most to global warming? 

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Pollution whether vehicular, electrical or industrial is the main contributor to the global warming.
The contribution of the greenhouse effect of carbon-containing gases to global warming turns out to be insignificant.
Here, we present a new estimate of national contributions to observed climate warming, including CO2 emissions from fossil fuels and land-use change, as well as methane, nitrous oxide and sulfate aerosol emissions While some countries’ warming contributions are reasonably well defined by fossil fuel CO2 emissions, many countries have dominant contributions from land-use CO2 and non-CO2 greenhouse gas emissions, emphasizing the importance of both deforestation and agriculture as components of a country’s contribution to climate warming.
Open accessJournal ArticleDOI
Bo Nordell, Bruno Gervet 
21 Citations
Such emissions from, e. g., the global use of fossil fuels and nuclear power, must contribute to global warming.
Hot spots and hot moments of greenhouse gas (GHG) fluxes can contribute significantly to overall GHG budgets.
We show that substitution of natural gas reduces global warming by 40% of that which could be attained by the substitution of zero carbon energy sources.
This study shows that global warming is the result of many factors including greenhouse gasses which can be reduced if people behave in a responsible way.