منابع مشابه
Stratospheric Ozone Depletion
There is now strong evidence that a consequence of human activities is the inadvertent accumulation of a variety of trace gases in the earth’s atmosphere. In the past decade, these global-scale changes in the chemical composition of the atmosphere have led to a very significant depletion of the stratospheric ozone layer over Antarctica in the southern spring months and also at northern latitude...
متن کاملStratospheric ozone depletion.
Solar ultraviolet radiation creates an ozone layer in the atmosphere which in turn completely absorbs the most energetic fraction of this radiation. This process both warms the air, creating the stratosphere between 15 and 50 km altitude, and protects the biological activities at the Earth's surface from this damaging radiation. In the last half-century, the chemical mechanisms operating within...
متن کامل1 3 . Stratospheric ozone depletion
The ozone layer in the stratosphere absorbs a large part of the harmful UV-radiation coming from the sun. In the natural situation ozone is continuously being formed and destroyed. However, a number of man-made chemicals that contain fluorine, bromine and chlorine groups, called Ozone Depleting Substances (ODS), can greatly increase the rate of destruction, leading to a reduction in the thickne...
متن کاملStratospheric Ozone Depletion in CESM
7 Observations show an increase in maximum precipitation extremes and a decrease in 8 maximum temperature extremes over southeastern South America (SESA) in the second 9 half of the 20th century. The Community Earth System Model (CESM) Large Ensemble 10 (LE) experiments are able to successfully reproduce the observed trends of extreme precip11 itation and temperature over SESA. Careful analysis...
متن کاملStratospheric ozone depletion, ultraviolet radiation and health
To our forebears the sky was the realm of the gods, inaccessible to mere humans. Only 100 years ago, the few scientists studying environmental problems would have been incredulous at suggestions that, by the late twentieth century, humankind would have begun to change the composition and function of the stratosphere. Yet this has happened. After 8000 generations of Homo sapiens, this generation...
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ژورنال
عنوان ژورنال: Annual Review of Physical Chemistry
سال: 1991
ISSN: 0066-426X,1545-1593
DOI: 10.1146/annurev.pc.42.100191.003503