-
Christian Schöenbein identifies ozone in the laboratory
-
Christian Schöenbein identifies ozone in the laboratory
-
Auguste de la Rive and Jean-Charles de Marignac suggest ozone is a form of oxygen; confirmed by Thomas Andrews in 1856
-
Auguste de la Rive and Jean-Charles de Marignac suggest ozone is a form of oxygen; confirmed by Thomas Andrews in 1856
-
Andrei Houzeau finds ozone present in natural air
-
Andrei Houzeau finds ozone present in natural air
-
Jean-Louis Soret proves that ozone is O3
-
Jean-Louis Soret proves that ozone is O3
-
Marie Alfred Cornu measures solar spectrum and finds sharp cutoff in ultraviolet (UV) light
-
Walter Hartley recognizes cutoff corresponds to UV absorption by ozone
-
John William Strutt (Lord Rayleigh) shows absorption is not in lower atmosphere
-
Charles Fabry makes first spectrometric measurements of "thickness" of ozone layer
-
G.M.B. Dobson develops ozone spectrophotometer and begins regular measurements of ozone abundance (Arosa, Switzerland)
-
Jean Cabannes and Jean Dufay show ozone is about 10 miles high
-
Thomas Midgley synthesizes chlorofluorocarbons (CFC's)
-
Sydney Chapman describes theory that explains existence of an ozone "layer"
-
Ozonesonde (balloon) measurements establish the ozone concentration is maximum around 12 miles up
-
David Bates and Marcel Nicolet propose catalytic (HOx) ozone destruction
-
Catalytic destruction is necessary in order to explain ozone amounts
-
Paul Crutzen discovers NOx catalytic cycle
-
Dept of Transportation sponsors intensive program of research, The Climatic Impact Assessment Program (CIAP)
-
Renewed expansion of CFC market
-
CFC production ends in US and Europe
-
Maximum CFC concentrations in stratosphere are reached
-
CFC production ends world-wide
