2026-06-27T10:43:52Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/949552025-08-28T15:20:55Zcom_20.500.14352_14col_20.500.14352_15

Tapiador, Francisco Navarro, Andrés Moreno, Raúl Jiménez-Alcazar, Alfonso Marcos, Cecilia Tokay, Ali Durán Montejano, Luis Bodoque, José María Martín, Raúl Petersen, Walt Castro, Martí 2024-01-24T08:49:03Z 2024-01-24T08:49:03Z 2017 Tapiador, F. J., and Coauthors, 2017: On the Optimal Measuring Area for Pointwise Rainfall Estimation: A Dedicated Experiment with 14 Laser Disdrometers. J. Hydrometeor., 18, 753–760, https://doi.org/10.1175/JHM-D-16-0127.1. 1525-755X 10.1175/JHM-D-16-0127.1 https://hdl.handle.net/20.500.14352/94955 1525-7541 https://doi.org/10.1175/JHM-D-16-0127.1 Laser disdrometers measure the particle size distribution (PSD) of hydrometeors through a small cross-sectional (tens of square centimeters) surface. Such a limited area induces a sampling effect in the estimates of the PSD, which translates to error in the reflectivity-rain-rate (Z-R) relationship used for ground radar estimates of rainfall, estimates of kinetic energy of precipitation, and any other hydrometeorological application relying on particle size information. Here, the results of a dedicated experiment to estimate the extent of the effect of limited area sampling of rainfall are presented. Using 14 Parsivel, version 1 (Parsivel-1), disdrometers placed within 6 m(2), it was found that the combined area of at least seven disdrometers is required for the estimates to start converging to a stable value. The results can be used to quantify the degree of over-/underestimation of precipitation parameters for a single instrument due to the limited collecting area effect. It has been found that a single disdrometer may underestimate instantaneous rain rate by 70%. eng restricted access On the optimal measuring area for pointwise rainfall estimation: a dedicated experiment with 14 laser disdrometers journal article