Metrological analysis of a gravimetric calibration system for tipping-bucket rain gauges

Meteorological applications

article

Márcio A. A. Santana¹  Patrícia L. O. Guimarães¹  Luca G. Lanza²  Emanuele Vuerich³ 

[1] National Institute for Space Research Center for Weather Forecasting and Climate Research (CPTEC);Department of Civil, Chemical and Environmental Engineering, University of Genoa;WMO/CIMO Lead Centre “B. Castelli” on Precipitation Intensity;Italian Met Service/Centre of Meteorological Experimentations (ReSMA)

关键词: metrology;    rain gauges;    calibration;    uncertainty;    tipping-bucket;    laboratory;   

DOI  :  10.1002/met.1540

学科分类：社会科学、人文和艺术（综合）

来源: Wiley

【 摘 要 】

The monitoring of hydro-meteorological variables for operational and research purposes requires accurate measurements. The reliability of such measurements varies depending on the need to meet different requirements in several sectors, including aviation, agriculture, civil protection, entertainment and weather forecast. In the case of rain gauges, many factors and variables affect the measurement of liquid and solid precipitation in the field. Calibration is a primary tool for quality control and requires suitable infrastructure to perform the tests, and is done by using properly evaluated testing methods and procedures. The current study presents the analysis of a typical calibration system for tipping-bucket rain gauges, using the gravimetric method, in accordance with the recommendations and requirements of both meteorology and metrology. As a result, the uncertainty contribution of each component of the system and an assessment of the resulting overall uncertainty budget are obtained.

【 授权许可】

CC BY|CC BY-NC|CC BY-NC-ND