ozone hole

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ozone hole

[′ō‚zōn ‚hōl]
(meteorology)
References in periodicals archive ?
Past studies have used statistical analyses of changes in the ozone hole's size to argue that ozone depletion is decreasing.
The report stated when the process of ozone depletion takes place, chlorine was found in various molecular forms, most of which were not measured.
Although warmer-than-average stratospheric weather conditions have reduced ozone depletion during the past two years, the current ozone hole area is still large because levels of ozone-depleting substances like chlorine and bromine remain high enough to produce significant ozone loss.
The researchers found that while the amount of ozone depletion arising from VSLS today is small compared to that caused by longer-lived gases, such as CFCs, VSLS-driven ozone depletion was found to be almost four times more efficient at influencing climate.
86 ozone depletion potential (ODP) tonnes is the baseline HCFC consumption in the country; importation-wise, base level in 2013 was 2,644 metric tonnes (MT).
These ozone instruments capture different aspects of ozone depletion.
Ozone depletion has been linked to an increase in ultraviolet radiation that causes skin cancer.
The reporting period can best be characterized as a period of transition for the GEF ozone depletion focal area.
Geir Braathen, the United Nations weather agency's top ozone expert, said ozone depletion had a late onset in this year's southern hemisphere winter, when low temperatures normally trigger chemical reactions that break down the atmospheric layer that filters dangerous solar radiation.
Ozone depletion has been most severe at the poles, but there has been a seasonal decline of up to 10 per cent at mid-latitudes - a band covering much of North America and Europe.
For example, in the section on ozone depletion, Hill says, "However, as happens with many environmental issues, there are skeptics.