Articles | Volume 14, issue 8
Atmos. Meas. Tech., 14, 5607–5623, 2021
https://doi.org/10.5194/amt-14-5607-2021
Atmos. Meas. Tech., 14, 5607–5623, 2021
https://doi.org/10.5194/amt-14-5607-2021

Research article 17 Aug 2021

Research article | 17 Aug 2021

Something fishy going on? Evaluating the Poisson hypothesis for rainfall estimation using intervalometers: results from an experiment in Tanzania

Didier de Villiers et al.

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Short summary
Ground-based rainfall observations across the African continent are sparse. We present a new and inexpensive rainfall measuring instrument (the intervalometer) and use it to derive reasonably accurate rainfall rates. These are dependent on a fundamental assumption that is widely used in parameterisations of the rain drop size distribution. This assumption is tested and found to not apply for most raindrops but is still useful in deriving rainfall rates. The intervalometer shows good potential.