Greenhouse emissions refer to the release of gases, primarily carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases, into the Earth's atmosphere that contribute to the greenhouse effect. These emissions trap heat from the sun, leading to an increase in global temperatures and resulting in climate change. Addressing greenhouse emissions is critical for reducing air pollutants and improving air quality, as many of these gases also have harmful effects on human health and the environment.