There is a new video out by Paul Burgess which explains the way in which greenhouse gases work in our atmosphere and why there is no need to fear the increase in CO2 or methane. Paul has a way of putting across the science in a clear and understandable way in just over 20 minutes. Here is the link;
CO2 has a long atmopsheric lifetime. Other significant GHGs do not last as long in the atmosphere. CO2 although the weakest GHG in the short term is really the strongest GHG in the long term. Its the long atmospheric lifetime that defines the climate that we have.
ReplyDeletehttps://en.wikipedia.org/wiki/Carbon_dioxide_in_Earth%27s_atmosphere
Carbon dioxide is a greenhouse gas. It absorbs and emits infrared radiation at its two infrared-active vibrational frequencies. The two wavelengths are 4.26 μm (2,347 cm−1) (asymmetric stretching vibrational mode) and 14.99 μm (667 cm−1) (bending vibrational mode). CO2 plays a significant role in influencing Earth's surface temperature through the greenhouse effect.[6] Light emission from the Earth's surface is most intense in the infrared region between 200 and 2500 cm−1,[7] as opposed to light emission from the much hotter Sun which is most intense in the visible region. Absorption of infrared light at the vibrational frequencies of atmospheric CO2 traps energy near the surface, warming the surface of Earth and its lower atmosphere. Less energy reaches the upper atmosphere, which is therefore cooler because of this absorption.[8]
The increase in atmospheric concentrations of CO2 and other long-lived greenhouse gases such as methane increase the absorption and emission of infrared radiation by the atmosphere. This has led to a rise in average global temperature and ocean acidification. Another direct effect is the CO2 fertilization effect. The increase in atmospheric concentrations of CO2 causes a range of further effects of climate change on the environment and human living conditions.
Your comments are not directed at the precise content of the post, which clearly shows that warming has been exaggerated. CO2 has played a significant role as a greenhouse gas. This is not disputed. What is in dispute is whether the increase that is happening now will produce further significant increases in the earth's surface temperature and the answer to that is no.
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