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Twenty Years of Ozone Decline - Proceedings of the Symposium for the 20th Anniversary of the Montreal Protocol (Hardcover, 2009 ed.)
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Discovery Miles 57 820
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Twenty Years of Ozone Decline - Proceedings of the Symposium for the 20th Anniversary of the Montreal Protocol (Hardcover, 2009 ed.)
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Homer speaks of lightning bolts after which 'a grim reek of sulphur
bursts forth' and the air was '?lled with reeking brimstone'.
(Homer 3000 BC). The odour was not actually the smell of sulphur
dioxide associated with burning sulphur, but rather was the ?rst
recorded detection of the presence of another strong odour, that of
ozone (O ) in Earth's atmosphere. These molecules were formed by
the passage of 3 lightning through the air, created by splitting
the abundant molecular oxygen (O ) 2 molecules into two, followed
by the addition of each of the free O atoms to another O to form
the triatomic product. In fact, most of the ozone molecules present
2 in the atmosphere at any time have been made by this same
two-step splitti- plus-combination process, although the initiating
cause usually begins with very energetic solar ultraviolet (UV)
radiation rather than lightning. Many thousands of years later, the
modern history of ozone began with its synthesis in the laboratory
of H. F. Schonbein in 1840 (Nolte 1999), although the positive
con?rmation of its three-oxygen atom chemical formula came along
sometime later. Scienti?c interest in high-altitude stratospheric
ozone dates back to 1881 when Hartley measured the spectrum of
ozone in the laboratory and found that its ability to absorb UV
light extended only to 293nm at the long wavelength end (Hartley
1881a).
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