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Please use this identifier to cite or link to this item: http://dspace.ucuenca.edu.ec/handle/123456789/28971
Title: Effect of the resolution of tipping-bucket rain gauge and calculation method on rainfall intensities in an andean mountain gradient
Authors: Muñoz, P
Celleri Alvear, Rolando Enrique
Feyen, Jan Jozef Albert
metadata.dc.ucuenca.correspondencia: Muñoz, P.; Departamento de Recursos Hídricos y Ciencias Ambientales, Universidad de CuencaEcuador; email: paul.andres.munoz@gmail.com
Keywords: Altitudinal Gradient
Percent Absolute Bias
Precipitation Sensor
Páramo Ecoregion
Rainfall Intensity
Issue Date: 16-Nov-2016
metadata.dc.ucuenca.embargoend: 1-Jan-2022
metadata.dc.ucuenca.volumen: 8
metadata.dc.source: Water (Switzerland)
metadata.dc.identifier.doi: 10.3390/w8110534
Publisher: MDPI AG
metadata.dc.type: Article
A laser-optical disdrometer served as reference to assess the absolute percent bias of calculated rainfall intensity using the data of different-resolution tipping-bucket rain gauges classically applied by climatologists and hydrologists in the Andean region. Additionally, the impact of the calculation method (tip counting versus cubic spline interpolation) was examined. The combined effect was assessed for different rainfall intensity classes (0-0.99, 1-1.99, 2-4.99, and 5-10 mm·h-1) and timescales (5, 10, 30, and 60 min). Additionally, the variation in percent absolute bias of the Davis rain gauge, the collector most widely used in the study region, was defined with respect to the Texas rain gauge along an elevation gradient between 3300 and 4000 m a.s.l. Results reveal that the value of the percent absolute bias is largest for small rainfall intensities (?2 mm·h-1) and short timescales (?10 min), and decreases when the cubic spline interpolation is used. No relation was found between the error, the elevation, and rainfall depth along the gradient. Based on the research findings, it is recommended to measure precipitation in the high Andean mountain region with a high-resolution sensor and to consider cubic spline for the computation of intensities.
URI: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85003502834&doi=10.3390%2fw8110534&partnerID=40&md5=a948549a5e832026b0a6f196e8b5d299
ISSN: 20734441
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