Inaccuracy in rainfall measurement

Abstract

RAINGAUGES are intended to give accurate measurements of precipitation. There is, however, a growing interest in the chemical composition of rainwater, and in the effects of chemicals in rain on plants and soil. It is also sometimes realised that the water collected in raingauges may be contaminated by dry deposition on the collecting funnels, and also by chemicals derived from the materials used in constructing these funnels and the collecting bottles beneath them.