Environment and health: 3. Ozone depletion and ultraviolet radiation.
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چکیده
منابع مشابه
Ozone depletion and increased UV-B radiation: is there a real threat to photosynthesis?
on photosynthetic competence or light-interception. It is concluded that O 3 depletion and the concurrent rise This critical review of recent literature questions earlin UV-B irradiance is not a direct threat to photosynier predictions that photosynthetic productivity of thetic productivity of crops and natural vegetation. higher plants is vulnerable to increased ultraviolet-B (UV-B) radiation ...
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Stratospheric ozone depletion and the concomitant increase in irradiance of ultraviolet-B radiation (UVB) at the earth’s surface represent major threats to terrestrial and aquatic ecosystems. In costal rocky shore environments, seaweeds constitute a group of organisms of particular significance to ecosystem function. Thus, impairment of seaweed performance by UVB-exposure may result in severe c...
متن کاملSolar ultraviolet radiation in a changing climate
The projected large increases in damaging ultraviolet radiation as a result of global emissions of ozonedepleting substances have been forestalled by the success of the Montreal Protocol. New challenges are now arising in relation to climate change. We highlight the complex interactions between the drivers of climate change and those of stratospheric ozone depletion, and the positive and negati...
متن کاملUltraviolet Radiation in the Arctic: The Impact of Potential Ozone Depletions and Cloud Effects
An atmospheric radiation model is used to study the combined effects of ozone depletions/redistributions and particulate clouds on atmospheric heating/photolysis rates and ultraviolet radiation reaching the biosphere. Four types of particulate clouds prevalent in the summertime Arctic are considered: stratospheric aerosols, tropospheric aerosols (Arctic haze), cirrus clouds, and stratus clouds....
متن کاملConsiderations for evaluating ultraviolet radiation-induced genetic damage relative to Antarctic ozone depletion.
Springtime ozone depletion over the Antarctic results in increased UVB in local marine environments. It has been established that decreases in primary productivity occur with decreases in ozone concentrations, but the impact of increased UVB on the functioning and stability of the ecosystem has not yet been determined. Very little has been done to evaluate the potential for genetic damage cause...
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عنوان ژورنال:
- CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne
دوره 163 7 شماره
صفحات -
تاریخ انتشار 2000