Extensive Dust Layer in the Northern Hemisphere


A DUST layer covering much of the northern hemisphere has been observed during the summer of 1972. The altitude of the layer varied between 8 and 9 km with typical submicron particulate concentrations ranging between 1 and 10 per cubic centimetre.

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  1. 1

    Smithsonian Center for Short-lived Phenomena, Event Card 1405.

  2. 2

    Rosen, J. M., J. Geophys. Res., 73, 479 (1968).

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ROSEN, J., HOFMANN, D., PEPIN, T. et al. Extensive Dust Layer in the Northern Hemisphere. Nature 240, 347–348 (1972). https://doi.org/10.1038/240347a0

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