, Chemistry and Radiation Changes in the Ozone Layer, Kluwer, Dordrecht, 2000, p. 398.Zerefos, C.S.; Isaksen, I. S. A.; Ziomas, I. Chemistry and radiation changes in the ozone layer. Boston: Kluwer Academic Publishers, 2000.
But safely up in the stratosphere (15 to 50 km above the Earth’s surface) ozone is as important to life as oxygen itself. If concentrated and compressed under atmospheric pressure at the bottom of the atmosphere, the whole ozone layer would be only 3-5 mm thick. This thin layer of ...
In 1987 Congress signed on to the Montreal Protocol on Substances That Deplete the Ozone Layer, an international treaty requiring the phasing out of all nonessential uses of CFCs. At that time, medical inhalers were considered an essential use because no viablealternative propellant existed. In ...
With the depletion of the stratospheric ozone layer, the atmosphere became more transparent to solar ultraviolet radiation. The penetration of this radiation is also affected by tropospheric ozone, aerosol, and clouds. Increases in tropospheric ozone may have decreased the levels of the solar ...
By 1975, the chlorine concentration was 1.4 parts per billion. By 1992 it was nearly 3, the chlorine reacting with chemicals to open a hole in the ozone layer each Antarctic spring MEGA-CITIES Thirteen cities have 10 million-plus people, making 46 per cent of the population urban. Expert...
result in any changes to the ozone layer; whether the proponents were suggesting that bodies operating under the United Nations Framework Convention on Climate Change were lacking in relevant expertise; and whether the amendments were an attempt to pre-empt the action [...] conf.montreal-prot...
TheChangesinSomething 1.简述某一事物的变化情况2.说明引起变化的原因3.分析其影响或走向（原因分析类）写作模式 参考范文 Ⅵ.Writing Back ChangesinGreatNaturalDisastersWorldwide 1401201008060402001960s1970s1980s1990s 下一页 大的自然灾害(单位：次)死亡人口（单位：万）Ⅵ.Writing Back 写作模式（原因分析类）1)...
[...] nutrients and the variability and resilience of the base of the food web — changes known and foreseen, including changes in ultraviolet radiation [...] from ozone-layer problems. daccess-ods.un.org daccess-ods.un.org 7.A. 初级生产的全球分布:目前分布状况的原因——影响营养物质循环...
During recent years there have been suggestions 1– that man's activities might reduce the thickness of the atmospheric ozone layer. Reductions in ozone could then give rise to an increase in potentially harmful solar UV radiation at the Earth's surface. Concern has been expressed particularly ...
Recently, the surface ozone concentration in the Korean peninsula has been increasing more rapidly than in the past, and seasonal changes are appearing such as increases in the number of ozone alerts in springtime. We examined changes in the timing of annual maximum South Korean O3 levels by fit...