atmospheric lifetime

atmospheric lifetime

The length of time a given species resides in the atmosphere, determined by its sources, sinks and reactivity.
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If you release something with an atmospheric lifetime of, say, four months at 50 or 60-degrees north, by the time it gets down to the tropics --particularly to these regions of the tropics where the majority of stratospheric exchange takes place--because of their short lifetimes, a lot of it will have reacted away, broken down lower in the atmosphere before they get the chance to get into the stratosphere.
Although HFCs cause a greenhouse effect that's thousands of times more powerful than carbon dioxide's, their average atmospheric lifetime is roughly 15 years - unlike carbon dioxide, which can persist in the atmosphere for centuries.
2 Since the atmospheric lifetime of BC is only a few days, reducing BC emissions can bring about a more rapid climate response than reductions in CO2 and other long-lived greenhouse gases alone.
Therefore, we can clearly identify the large uncertainty in quantifying the forcing caused by aerosols on the Earth's radiative balance, because the chemical, physics and optical proprieties of aerosol are extremely variable in space and time due to the short atmospheric lifetime of aerosols and that their emissions are not uniform (Forster et al.
Buchwitz said: "The interpretation of the pattern is not trivial as the atmospheric lifetime of CO2 is very long (many years).
The 23 articles review the year's scientific developments regarding such matters as an African perspective on global warming, evolution of the genus Homo, the atmospheric lifetime of fossil fuel carbon dioxide, mammalian response to Cenozoic climate change, forensic seismology and the Comprehensive Nuclear-Test-Ban Treaty, planetary migration and what it means for planet formation, the growth and evolution of asteroids, a multi-proxy perspective and protozoic case study of Euxinia in the ancient oceans, and the polar deposits of Mars.
In addition, the blowing agent will have an atmospheric lifetime of just a few days.
The Honeywell material, which should be available in sample quantities later this year, is a non-flammable liquid that the company says will offer performance benefits comparable to those of other fluorocarbons, but with a low global-warming potential, in addition, the blowing agent will have an atmospheric lifetime of just a few days.
Explaining the products he says Novec 1230 fluid is a highly efficient fire extinguishing agent offering a long-term, sustainable technology that has the greatest margin of safety for use in occupied spaces, has a global warming potential of 1, zero ozone depletion potential and the lowest atmospheric lifetime for halocarbon alternatives -- five days.
The liquid has an atmospheric lifetime of just five days and a global warming potential of one, making it uniquely positioned to meet current halon replacement regulations in the country.
The radiative forcing together with an atmospheric lifetime determined from laboratory photochemical kinetic measurements is then used to derive the GWP of the compound.
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