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Bookmark or Share- Greenhouse gases - World Meteorological OrganizationGreenhouse gases (GHGs) in the atmosphere trap infrared radiation from the Earth, keeping it warm, this is known as the greenhouse effect. GHG emissions from human activities provided the majority contribution towards global warming of 1.1 °C. Carbon dioxide (CO2) in 2023 was 151% of pre-industrial levels.
- What is the greenhouse effect? - NASA ScienceGreenhouse gases are part of Earth's atmosphere. This is why Earth is often called the 'Goldilocks' planet – its conditions are just right, not too hot or too cold, allowing life to thrive. Part of what makes Earth so amenable is its natural greenhouse effect, which maintains an average temperature of 15 ° C (59 ° F) .
- Global Greenhouse Gas Overview | US EPAAt the global scale, the key greenhouse gases emitted by human activities are: Carbon dioxide (CO2): Fossil fuel use is the primary source of CO 2. CO 2 can also be emitted from the landscape through deforestation, land clearance for agriculture or development, and degradation of soils.
- Greenhouse Gas (GHG) Emissions and Removals | US EPALearn about the most important GHGs and opportunities for reducing emissions. Where do GHGs come from? See the human activities that add GHGs to our atmosphere and options to cut emissions. Find out more about global greenhouse gas emissions and trends and capacity building for national GHG inventories.
- Overview of Greenhouse Gases | US EPAGases that trap heat in the atmosphere are called greenhouse gases. This section provides information on emissions and removals of the main greenhouse gases to and from the atmosphere.
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