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Line 1: − The '''runaway greenhouse effect''' is a sustained, intense warming associated with positive feedbacks within the climate system. Although the runaway greenhouse effect is not predicted for [[Earth]], it is of interest for other planets, such as [[Venus]]. + − An example of the effect, as it would occur on Earth, is that as carbon dioxide increases in the atmosphere, atmospheric water vapor concentrations increase, amplifying the natural greenhouse effect, which impacts the climate system such that additional greenhouse gases are introduced to the atmosphere until the surface temperatures become untenable. + − +
Outside of the political sphere, few academics give any credence to this theory.
{{merge|greenhouse effect}}
{{merge|greenhouse effect}}
A '''runaway greenhouse effect''' has been predicted by some climate scientists, in which slight increases in trace gases in the Earth's atmosphere would lead to higher air temperatures. These higher temperatures would in turn cause "[[greenhouse gases]]" such as [[carbon dioxide]] to have higher concentrations, which in turn would accelerate the warming trend. Alarming increases of 3 to 15 degrees Fahrenheit have been predicted.
Outside of the political sphere, few academics give any credence to this theory.
[[Richard Lindzen]] wrote:
MIT professor [[Richard Lindzen]] wrote:
:It is still of interest to ask what we would expect a doubling of carbon dioxide to do. A large number of calculations show that if this is all that happened, we might expect a warming of from .5 to 1.2 degrees centigrade. The general consensus is that such warming would present few, if any, problems. ... current models depend heavily on undemonstrated positive feedback factors to predict high levels of warming. [http://www.cato.org/pubs/regulation/regv15n2/reg15n2g.html]
:It is still of interest to ask what we would expect a doubling of carbon dioxide to do. A large number of calculations show that if this is all that happened, we might expect a warming of from .5 to 1.2 degrees centigrade. The general consensus is that such warming would present few, if any, problems. ... current models depend heavily on undemonstrated positive feedback factors to predict high levels of warming. [http://www.cato.org/pubs/regulation/regv15n2/reg15n2g.html]