greenhouse gases
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- any one of the gases found in the atmosphere (including CO2, H2O, CH4) that absorb and re-emit longwave radiation, contributing to the greenhouse effect.
NCDC National Climatic Data Center - Cite This Source - This Definition - Atmospheric radiation, Earth radiation, Effective terrestrial radiation, Greenhouse Effect, Infrared Radiation, Longwave Radiation, Net terrestrial radiation, Shortwave radiation, Terrestrial, Terrestrial radiation