Errors Analysis in Extreme Rainfall Recording due to Tipping Bucket Rain Gauge Performance

Javier González, Julián Lajara, Sarai Díaz

Tuesday 30 june 2015

12:45 - 12:48h at North America (level 0)

Themes: (T) Extreme events, natural variability and climate change, (ST) Hydrological extremes: floods and droughts, Poster pitches

Parallel session: Poster pitches: 5I. Extreme - Flood Drought

The measurement of rain intensity is traditionally performed by means of tipping bucket rain gauges (TBRs), the most popular and widespread type of rain gauge actually employed worldwide. These instruments are known to underestimate rainfall at higher intensities (>100 mm/h) because of the rainwater amount that is lost during the tipping movement of the buckets. The related biases are known as systematic mechanical errors and result in the overestimation of rainfall at lower intensities (