Which greenhouse gases is the most powerful?

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Carbon dioxide (CO2) is identified as the most significant greenhouse gas, accounting for approximately 55% of the greenhouse effect, while chlorofluorocarbons (CFCs), methane, and nitrous oxide contribute lesser amounts. Human activities, particularly since the industrial revolution, have led to a rise in CO2 concentrations from 280 to nearly 360 parts per million. Although CFCs are potent greenhouse gases per molecule, their low atmospheric concentrations limit their overall impact. Water vapor is acknowledged as the most abundant greenhouse gas, with ongoing debates about its role in climate feedback mechanisms, including potential positive feedback leading to extreme warming. The discussion highlights the complexity of climate science and the importance of consensus among experts in understanding greenhouse gas effects.
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This is an update on the NOAA-CMDL link for greenhouse gases.
http://www.cmdl.noaa.gov/gallery/ccgg_figures/co2rug_mlo
 
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