Greenhouse gases absorb, thermalize, and re-emit longwave radiation in the wavelengths of interest at Earth-like temperatures. gases have other important characteristics that matter. Their atmospheric lifetime is one. Water [H?O] has a VERY SHORT lifetime on the order of a week or so, while CO? has several lifetimes [defined mathematically using a time as an exponential term], one of which is on the order of millennia. Longer lifetimes means released extras take longer to remove using natural processes. Their mixing into the atmosphere is another. H?O is poorly mixed and almost only appears in the lower troposphere and even then not equally at every latitude or longitude. CO? on the other hand is very well mixed and appears at all latitudes, longitudes, and altitudes in roughly similar proportions -- variations due mostly to seasons and plant respiration effects. Effectiveness is still another. Some greenhouse gases affect longwave radiation in bands that are mostly "clear" and are therefore very effective when released. Some greenhouse gases, like CO?, affect longwave radiation in "gray or black" bands, which means their effectiveness is diminished (pressure broadening causes effects in gray regions and changes in their effective radiation altitudes still mean there is significant non-negligible impact, though.)
The assignment of modern change in energy and retained latent and sensible heat to anthropogenic causes is due to two overarching facts: almost all experimental result remains entirely consistent with well-established physics theory and no viable alternative theories have successfully been proposed that can explain prior results or predict future results nearly as well. Myriad details provide supporting "pillars." For example, the isotopes of carbon are three: 12C, 13C and 1?C. Only 12C and 13C are stable. 1?C is radioactive, with a halflife of 5730 ± 40 years. Fossil fuels are in the ground so long, that there is zero 1?C in them. However, since 1?C is continually regenerated at a relatively fixed rate in the upper atmosphere by cosmic ray bombardment of 1?N and absorbed by plants through respiration, the atmosphere normally (without fossil fuel gas releases) has a fixed equillibrium state of 1?C in it. With the release of fossil fuels, which have lots of 12C and 13C but no 1?C, the change in the relative ratios of the three isotopes can be readily predicted (we know how much fossil fuel is burned with good accuracy.) This quantitative prediction of change has been observed and is entirely consistent with theory on the topic. That's only one of many hundreds of such experimental result tethered to physics theory "pillars" that would need explanation by an alternative theory. None has been proposed that can manage even a few of these pillars, let alone most of them.
Fossil fuel CO? releases are huge, which is why it is so important despite the fact that the sky is already largely darkened by existing atmospheric CO?. Increasing CO? levels darkens the gray, pressure broadened outer wavelength bands, which aren't already "black" yet, and it also raises the effective altitude at which CO? trapped wavelengths can escape into space. Since there is an adiobatic rate of increase in temperature moving downward towards the surface from this altitude on the order of 3F to 3.5F per thousand feet, raising this effective altitude a few hundred feet would increase the surface temperature by a few tenths of a degree (F). This is complicated by the fact that it's usually a little colder, higher up; but also that if this effective point of radiation is colder then less energy escapes into space due to Stefan-Boltzmann. If the temperature stays the same a little higher up (and radiates just as much) then the surface temp rises because of the increased altitude and the distance to ground level. If it is colder there (and radiates less), then more heat is retained on Earth and the surface temp rises and eventually so does the temp at this new, higher altitude (so that enough energy can be released into space to put things back into energy balance.) Either way, similar results.
The presence of increasing amount of carbon dioxide and other greenhouse gases in the Earth's atmosphere magnifies, or enhances the greenhouse effect which creating a large imbalance in the nature. It result to Earth warm, additional amounts of these gases leads to more heat being trapped on the planet. It is causing global warming as well as affecting the Earth's weather patterns and in this way enhanced greenhouse gas related or linked with global warming.
CO2 holds energy which means hotter stuff
usins fuels
