Note on Nocturnal Radiation Reversal

REGINALD H. CLARKE Division of Atmospheric Physics, Commonwealth Scientific and Industrial Research Organization, Aspendale, Victoria, Australia

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Abstract

Nocturnal radiation reversal is essentially an unsteady, advective effect. It requires that clouds or fog drift over a previously cooled surface. In the case of higher clouds, reversal can occur only with a sufficiently intense surface temperature inversion.

Statistics of authentic cases of reversal occurring at Aspendale, Australia (38°02′S, 138°06′E), are given and related to other meteorological variables.

Abstract

Nocturnal radiation reversal is essentially an unsteady, advective effect. It requires that clouds or fog drift over a previously cooled surface. In the case of higher clouds, reversal can occur only with a sufficiently intense surface temperature inversion.

Statistics of authentic cases of reversal occurring at Aspendale, Australia (38°02′S, 138°06′E), are given and related to other meteorological variables.

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