The Implications of Ozone Depletion on Human Health Essay.
Ozone depletion, gradual thinning of Earth ’s ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. ozone depletion Antarctic ozone hole, September 17, 2001.
The hole in the ozone layer has been a cause for concern for a number of years. UK ozone levels are recorded regularly to assess the changing state of the ozone layer and help us to understand the.
Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole.
History of the study of atmospheric ozone. Richard S. Stolarski. NASA Goddard Space Flight Center. Greenbelt, MD 20771. USA. Abstract. Ozone is a substance that touches on our modern society in many ways. Ozone is used in industrial processes and as a disinfectant. Ozone is a strong oxidizing agent that is present in photochemical smog.
The ozone hole has steadily grown in size (up to 27 million sq. km.) and length of existence (from August through early December) over the past two decades. After a series of rigorous meetings and negotiations, the Montreal Protocol on Substances that Deplete the Ozone Layer was finally agreed upon on 16 september 1987 at the Headquarters of the International Civil Aviation Organization in.
Conclusions: Looking back over the scientific investigation of ozone depletion, we can see how the Molina-Rowland hypothesis evolved with new data.When chlorine nitrate, a chemical that ties up chlorine in an ozone-safe form, was added to the hypothesis, the expected amount of ozone loss decreased.
The finding is important because the lower stratosphere contains the largest fraction of the ozone layer. Overall, Ball says, global ozone has declined 5 percent between 1970 and 1998—prior to.