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Definition. The greenhouse effect on Earth is defined as: "The infrared radiative effect of all infrared absorbing constituents in the atmosphere. Greenhouse gases (GHGs), clouds, and some aerosols absorb terrestrial radiation emitted by the Earth’s surface and elsewhere in the atmosphere." [ 15]: 2232.
Greenhouse gas emissions. Annual carbon dioxide emissions per person (height of vertical bars) and per country (area of vertical bars) of the fifteen highest-emitting countries [ 1] Greenhouse gas ( GHG) emissions from human activities intensify the greenhouse effect. This contributes to climate change. Carbon dioxide (CO 2 ), from burning ...
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 ]
The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first identified. In the late 19th century, scientists first argued that human emissions of greenhouse gases could change Earth's energy ...
Adding to greenhouse gases increases this insulating effect, causing an energy imbalance that heats the planet up. A climate model is a representation of the physical, chemical and biological processes that affect the climate system. [ 185 ]
The warming from the greenhouse effect has a logarithmic relationship with the concentration of greenhouse gases. This means that every additional fraction of CO 2 and the other greenhouse gases in the atmosphere has a slightly smaller warming effect than the fractions before it as the total concentration increases.
A runaway greenhouse effect is a tipping point so extreme that oceans evaporate [169] and the water vapour escapes to space, an irreversible climate state that happened on Venus. [170] A runaway greenhouse effect has virtually no chance of being caused by people.
A runaway greenhouse effect will occur when a planet's atmosphere contains greenhouse gas in an amount sufficient to block thermal radiation from leaving the planet, preventing the planet from cooling and from having liquid water on its surface. A runaway version of the greenhouse effect can be defined by a limit on a planet's outgoing longwave ...