Tracer-tracer Relations as a Tool for Research on Polar Ozone Loss
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Beschreibung
Ozone was discovered by Christian Friedrich Sch¨onbein in 1839. Sch¨onbein himself believed
that ozone plays an important role in the Earth system and suggested (in 1853) that
long-term ozone measurements in the atmosphere should be performed on an international
scale: “Geneigt zu glauben, das atm. Ozon spiele im Haushalte der Erde eine wichtige Rolle,
halte ich es f¨ur w¨unschenswerth, dass m¨oglichst zahlreiche, sowohl grosse Zeitr¨aume als bedeutende
L¨anderstrecken umfassende, untereinander vergleichbare Beobachtungen ¨uber die
Ver¨anderungen des Ozongehaltes der Atmosph¨are angestellt werden. . . 2” (in a letter to Justus
von Liebig, Kahlbaum and Thon, 1900, p. 10). Indeed numerous measurements were
made during the second half of the 19th century using a method that Sch¨onbein had developed
(for a detailed discussion of the early measurements of atmospheric ozone see e.g.,
Crutzen, 1988; London and Liu, 1992; Sonnemann, 1992). This early interest in ozone was
motivated to a large extent by the fact that ozone, at that time, was considered an indicator
of clean, healthy air and that ozone-poor air was thought to promote sickness. Measurement
series of ozone were performed in spas with the intention of demonstrating how beneficial
to health a stay would be (Lender, 1872). This view persisted for many decades and was
held by leading scientists in the field; as late as 1946 Regener stated “Anwesenheit von Ozon
ist ein Indikator f¨ur gute Luft3”. Today, of course, it is known that high concentrations of
tropospheric ozone are detrimental to human health and similarly harmful to other living
systems. ...
Autor*in
Rolf Müller