Point precipitation measurements: why are they not corrected?
1987
Knowledge of precipitation is based on point measurements obtained from can-type gauges exposed above ground-level, a technique applied and unchanged ever since the early days of civilization. Such measurements are subject to a systematic error of up to 50%. This error has been known and efforts to eliminate it been made since the seventeenth century. From that time, a myriad of papers has been published suggesting protection measures or correction procedures. Yet the precipitation measurements are still not corrected. The reasons for this state of affairs are analysed and future prospects discussed.
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