Environmental sciences: Monitoring ozone recovery
A paper describing a new metric for monitoring the recovery of the ozone layer and assessing the impact of illicit and unregulated emissions of ozone-depleting substances on the ozone layer has been published.Naturewill be published inThis new metric could be a useful new tool for policy makers and scientists to assess the impact of specific ozone-depleting substances.
The Montreal Protocol, an international treaty aimed at protecting the ozone layer, has reduced atmospheric concentrations of ozone-depleting substances, and we have entered a new phase of ozone recovery.These monitoring metrics are needed to clarify how ozone recovery, Montreal Protocol violations and other emissions affect the ozone layer.However, traditional metrics remain ambiguous and new metrics are needed.
John Pyle and colleagues propose an integrated ozone depletion metric to show the effects of emerging emissions on the ozone layer.This metric takes into account the emission intensity and residence time in the atmosphere or stratosphere of new substances, and also provides information on how the ozone layer may recover from emissions of specific substances, as well as previous measurements. Easier to calculate than standard.
For gases with known atmospheric lifetimes, Pyle et al. assess the impact of this integrated ozone depletion metric on the ozone layer and its importance to policy goals for any emission scenario. It shows the view that it will be a simple means to
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* This article is reprinted from "Nature Japan Featured Highlights".
Reprinted from: "Environmental Science: Monitoring Ozone Recovery'
