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The Lead Centre partecipated to the Meteorological Technology World Expo 2017 in Amsterdam

The Lead Centre partecipated to the Metoemet final meeting in Moncalieri (Tourin), presentig the results performed in the Research Excellence Grant (REG3) of the Meteomet2 project.

The Lead Centre will participate to the WMO TECO 2016 conference and the International Conference on Metrology for Meteorology and Climate with poster presentations on the more recent research developments and ongoing collaborations.

Wind tunnel experiments are currently under execution at the DICCA laboratories to provide information on rain gauges performance under turbulent winds and validation of CFD numerical analysis.

Oral presentation at the AMS annual meeting in New Orleans. Download the presentation.

Oral and poster presentations at the UrbanRain workshop (Pontresina). Download the short paper on the jointed CFD activity with EML.

The Lead Centre has recently signed a new research agreement with LSI LASTEM to study an improved rainfall intensity sensor compliant with UNI 11452:2012.

Arctic Circle 2015 Assembly

Presentation at the Arctic Metrology breakout session of the Arctic Circle 2015 Assembly.

New publications about the Lead Centre CFD studies available on AMS journals.

New field activities

Installation and set-up of aerodynamic gauges and a laser disdrometer at the Vigna di Valle field site.

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Highlights

See REAL-TIME rainfall intensity observations measured by a CAE tipping-bucket rain gauge (link to the UniGe meteo station).

Last precipitation date: 2018-04-18



Computational Fluid Dyanmics analysis of precipitation gauges wind induced errors
( see Publications )

WMO Intercomparisons

The history of instrument intercomparisons in the case of rainfall measurements dates back significantly in the last centuries. Symons realized the first intercomparison of rain gauge instruments at Hawskers - Yorkshire, UK in 1858 (from Stow, 1871 as reported by Goodison et al., 1998), whose experiments in the field are depicted below. However, most international rain gauges intercomparison efforts focused on accumulated amounts of precipitation, low intensity rainfall (snow) and sometimes only on qualitative RI information (light, moderate, and heavy).



Symons, 1858

The latest WMO international intercomparison effort had the objective to assess and compare counting and catching errors of both catching and non-catching type of rain intensity gauges.


One Laboratory Intercomparison of Rainfall Intensity (RI) gauges was first held at the recognised laboratories of Météo France, KNMI (The Netherlands), and the University of Genoa (Italy) — the project leader — and was concluded in 2005: results are available on the WMO Web site (here), and are published in Lanza and Stagi, 2008. The developed procedure for laboratory calibration of catchment type RI gauges and the reference instruments to be used for Field RI Intercomparison initiatives have become recommendations of CIMO XIV, the fourteenth session of the WMO Commission for Instruments and Methods of Observation (link).

The first Field Intercomparison of Rainfall Intensity (RI) gauges was organised from October 2007 to April 2009 in Vigna di Valle, Rome (Italy) under the guidance of Eckardt Lanzinger – the project leader. The campaign was held at the Centre of Meteorological Experimentations (ReSMA) of the Italian Meteorological Service. A group of 30 previously selected rain gauges based on different measuring principles were involved in the Intercomparison. Installation of the instruments in the field was preceded by the laboratory calibration of all submitted catching-type rain gauges at the University of Genoa. Results are available on the WMO Web site (here), and are published in Lanza and Stagi, 2009 and Lanza and Vuerich, 2009.

LC-PrIN - WMO-CIMO Lead Centre "B.Castelli" on Precipitation Intensity