Greenhouse gas - Wikipedia
网页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 …
Overview of Greenhouse Gases | US EPA
网页2024年4月11日 — 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.
Homepage | GHG Protocol
网页Greenhouse Gas Protocol provides standards and tools that help countries and cities track progress toward climate goals. Learn more.
Greenhouse gas | Definition, Emissions, & Greenhouse Effect
网页6 天之前 — 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.
Greenhouse Gas (GHG) Emissions and Removals | US EPA
网页2024年6月24日 — Overview of Greenhouse Gases » Learn about the most important GHGs and opportunities for reducing emissions. Where do GHGs come from? Sources of Greenhouse Gases » See the human activities that add GHGs to our atmosphere and options to cut emissions. Global.
Greenhouse Gases - MIT Climate Portal
网页2023年5月22日 — Greenhouse gases are gases—like 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. When energy from the sun first reaches us, it does so mainly as light.
Overview of Greenhouse Gases | Greenhouse Gas (GHG) …
网页2020年9月8日 — GHG emissions are often measured in carbon dioxide (CO 2) equivalent. To convert emissions of a gas into CO 2 equivalent, its emissions are multiplied by the gas's Global Warming Potential (GWP). The GWP takes into account the fact that many gases are more effective at warming Earth than CO 2, per unit mass.
Greenhouse gas emissions - Wikipedia
网页Greenhouse gas (GHG) emissions from human activities intensify the greenhouse effect. This contributes to climate change. Carbon dioxide (CO 2), from burning fossil fuels such as coal, oil, and natural gas, is one of the most important factors in causing climate change. The largest emitters are China followed by the United States.
Greenhouse gases - World Meteorological Organization
网页2023年11月15日 — Greenhouse gases (GHGs) in the atmosphere trap heat from the sun and keep the Earth warm, this is known as the greenhouse effect. GHG emissions from human activities provided the majority contribution towards global warming of 1.1 °C.
Overview of Greenhouse Gases | Greenhouse Gas (GHG) …
网页2016年10月6日 — Many strategies for reducing CO emissions from energy are cross-cutting and apply to homes, businesses, industry, and transportation. EPA is taking common sense regulatory actions to reduce greenhouse gas emissions from our nation's largest sources, including power plants and motor vehicles.
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