Abstract
DETERMINATION of vertical distributions of ozone from lunar eclipse observations1 suggests the practicability of similar ground-based, optical methods, provided ‘screens’ more amenable to experimental control than the Moon can be used. Alternatives are noctilucent clouds, atmospheric layers, balloons, and artificial Earth satellites. Noctilucent clouds are rather rare and beyond experimental control; ionospheric layers give very limited information2, as do other atmospheric layers such as sodium3. Following a suggestion by Dr. V. D. Hopper of this Department, a method analogous to the lunar eclipse method has therefore been developed in Melbourne, for initial application to ground-based filter photometric observations of balloons at twilight.
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PITTOCK, A. A Twilight Method of determining the Vertical Distribution of Ozone. Nature 190, 426–427 (1961). https://doi.org/10.1038/190426a0
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DOI: https://doi.org/10.1038/190426a0
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