The WMO precipitation measurement intercomparisons

This paper presents the results of international precipitation measurement intercomparisons organized by the World Meteorological Organization between 1955 and 2008. They have focussed on the impact of wind, evaporation and other systematic error sources on rain, snow and precipitation intensity measurement using standard gauges and different types of tipping-bucket and weighing gauges. The application of the results of WMO intercomparisons represents the state-of-the-art of precipitation measurements and the ultimate step to increase the reliability of point precipitation measurements and hydrological studies. It indicates that missing correction application makes any intercomparison measurements using different precipitation gauges 50 years behind the age and in any case, their results questionable.