Sentences with phrase «with atmospheric lifetimes»

Abstract - Although carbon dioxide emissions are by far the most important mediator of anthropogenic climate disruption, a number of shorter - lived substances with atmospheric lifetimes of under a...

Currently only ozone - depleting substances with atmospheric lifetimes ranging from a year to over 100 years, are controlled because they linger in the atmosphere long enough to reach the upper atmosphere, called the stratosphere.

GEM, with an atmospheric lifetime in the range of 5 — 24 months, can be transported across long distances to remote locations before conversion to divalent Hg species by atmospheric oxidation processes (4).

Not exact matches

«It is ironic that high concentrations of molecules with high global warming potential (GWP), the worst - case scenario for Earth's climate, is the optimal scenario for detecting an alien civilization, as GWP increases with stronger infrared absorption and longer atmospheric lifetime,» say the authors.

The seasonal cycle in atmospheric CO2 shows that the lifetime of a CO2 molecule in the air before it is exchanged with another in the land biosphere is about 12 years.

With a long atmospheric lifetime of about 6 months, mercury emissions spread across the globe.

They were, therefore, taken off the market a few years later and themselves replaced with compounds that had much shorter atmospheric lifetimes.

With a lifetime of ~ 10 years, spreading emissions over 30 - year period would of course reduce the peak atmospheric burden (though CH4 lifetime would presumably increase with higher CH4 concentratiWith a lifetime of ~ 10 years, spreading emissions over 30 - year period would of course reduce the peak atmospheric burden (though CH4 lifetime would presumably increase with higher CH4 concentratiwith higher CH4 concentration).

I think I know what you mean here but in the context of the previous Much Ado about Methane article with discussion of the difference between atmospheric lifetime of a CO2 molecule vs. lifetime of an increase in concentration, this could also be put more clearly.

By using dual radioactive tracers with differing lifetimes, Wilson et al. [2017] found short term increases in CH4 and CO2 release during periods of thaw in a discontinuous permafrost were generally offset by long - term accumulation of peat in the ensuing millennia, leading the regions to continue to be net carbon sinks with negative atmospheric radiative forcing, given the long life - time of atmospheric CO2.

However, we only started seriously reducing CFC emissions 20 years ago (with the Montreal Protocol - the ozone version of the Kyoto Protocol), and CFCs have a long atmospheric lifetime, so the recovery will take time.

Aerosols, with their short atmospheric lifetime, and highly variable geographic distribution, are difficult to observe quantitatively from space with currently available satellite instrumentation which only measure the spectral intensity of reflected solar radiation.

Certainly, CO2 and other anthropogenic GHG emissions are a potent driver of warming, with water serving in a feedback role due to its short atmospheric lifetime.

«Even with mitigation efforts,» the Summit report says, «climate change will continue to unfold for decades due to the long atmospheric lifetime of past greenhouse - gas emissions and the gradual release of excess heat that has built up in the oceans.

«With this picture in mind, even if emissions were stopped overnight globally, the atmospheric concentrations would continue for decades because of the long lifetime of these greenhouse gases in the atmosphere,» he said.

This conflates the average lifetime of a single molecule with the decay of atmospheric concentration following an increase above equilibrium levels.

Sadly, you have conflated the average time that an individual CO2 molecule stays in the atmosphere before being replaced (called airborne residence time) with the time it takes the CO2 concentration to return to pre-pulse values after the addition of a pulse of CO2 to the atmosphere (called e-folding time or pulse decay time or atmospheric lifetime).

Another feedback has been identified for the addition of N2O to the atmosphere; it is associated with stratospheric O3 chemistry and shortens the perturbation lifetime relative to the global atmospheric lifetime of N2O by about 5 %.

«uncertainty with the RF of the gas» might be seized on by deniers who will wrongly interpret it as an admission of ignorance when it is really just a shorthand way of saying that a tonne of any gas has an atmospheric lifetime and impact which will depend on plenty of chance events such as where it was emitted, what the temperature was at the time, etc etc and we can compensate for imperfect information by using probability distributions.

The juiciest disaster - movie scenario would be a release of enough methane to significantly change the atmospheric concentration, on a time scale that is fast compared with the lifetime of methane.