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  2. Definition, Emissions, & Greenhouse Effect - Britannica

    www.britannica.com/science/greenhouse-gas

    greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth’s surface and reradiating it back to Earth’s surface, thus contributing to the greenhouse effect. Carbon dioxide, methane, and water vapour are the most important greenhouse gases.

  3. Greenhouse gas - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_gas

    Greenhouse gases (GHGs) are the gases in the atmosphere that raise the surface temperature of planets such as the Earth. What distinguishes them from other gases is that they absorb the wavelengths of radiation that a planet emits, resulting in the greenhouse effect. [1]

  4. Greenhouse Gases - MIT Climate Portal

    climate.mit.edu/explainers/greenhouse-gases

    Greenhouse gases are gaseslike carbon dioxide (CO 2), methane, and nitrous oxide—that keep the Earth warmer than it would be without them. The reason they warm the Earth has to do with the way energy enters and leaves our atmosphere .

  5. Overview of Greenhouse Gases | US EPA - U.S. Environmental...

    www.epa.gov/ghgemissions/overview-greenhouse-gases

    Gases 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.

  6. What is the greenhouse effect? - NASA Science

    science.nasa.gov/climate-change/faq/what-is-the-greenhouse-effect

    The greenhouse effect is the process through which heat is trapped near Earths surface by substances known as ‘greenhouse gases.’ Imagine these gases as a cozy blanket enveloping our planet, helping to maintain a warmer temperature than it would have otherwise.

  7. Greenhouse effect | Definition, Diagram, Causes, & Facts

    www.britannica.com/science/greenhouse-effect

    Greenhouse effect, a warming of Earths surface and troposphere (the lowest layer of the atmosphere) caused by the presence of water vapor, carbon dioxide, methane, and certain other gases in the air. Of those gases, known as greenhouse gases, water vapor has the largest effect.

  8. What Are Greenhouse Gases? | Saving Earth - Encyclopedia...

    www.britannica.com/explore/savingearth/greenhouse-gas

    Greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth’s surface and reradiating it back to Earth’s surface, thus contributing to the greenhouse effect. Carbon dioxide, methane, and water vapour are the most important greenhouse gases.

  9. Greenhouse Effect - National Geographic Society

    www.nationalgeographic.org/encyclopedia/greenhouse-effect

    The greenhouse effect happens when certain gasesknown as greenhouse gases —collect in Earths atmosphere. These gases, which occur naturally in the atmosphere, include carbon dioxide, methane, nitrogen oxide, and fluorinated gases sometimes known as chlorofluorocarbons (CFCs).

  10. Greenhouse gases, facts and information - National Geographic

    www.nationalgeographic.com/environment/article/greenhouse-gases

    Carbon dioxide, a key greenhouse gas that drives global climate change, continues to rise every month. Find out the dangerous role it and other gases play.

  11. Overview of Greenhouse Gases | US EPA

    19january2021snapshot.epa.gov/ghgemissions/overview-greenhouse-gases

    Larger image to save or print Gases 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.