Abstract

A small portable rainfall simulator is described which is inexpensive to construct and use and which requires relatively little water. Although drops are produced by drop-formers a satisfactory drop-size distribution is obtained by allowing the drops to break-up by falling onto a 3 mm wire mesh. The kinetic energy of the simulated rain is lower than that of natural rainfall because of the low fall height. Characteristics of the simulated rain are described and the use of the simulator briefly illustrated by results obtained from forested areas in Luxembourg.

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