Características de lluvia y eventos extremos en los Andes Tropicales usando un radar de lluvia de Apuntamiento Vertical

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Publicado: Feb 28, 2025
DOI: https://doi.org/10.17163/lgr.n41.2025.04
Palabras clave:
Eventos extremos, Capa de fusión, Ciclo diario de lluvia, Estructura vertical de lluvia, Andes Tropicales

Contenido principal del artículo

Javier Chininín-Cabrera
Departamento de Recursos Hídricos y Ciencias Ambientales Universidad de Cuenca, 010207, Cuenca, Ecuador.
https://orcid.org/0000-0003-3412-5576
Rolando Célleri
Facultad de Ingeniería, Universidad de Cuenca, 010203, Cuenca, Ecuador.
https://orcid.org/0000-0002-7683-3768

Resumen

La información de la estructura vertical de la lluvia en los Andes es bastante limitada, a pesar de su importancia en aspectos como modelos de clima (MC) y estimación cuantitativa de lluvia (ECL). Dentro de estos aspectos, los eventos extremos conforman un punto de alto interés debido a la necesidad de mitigar los problemas sociales que pueden ocasionar. Por lo tanto, el objetivo de esta investigación es caracterizar la estructura vertical de la lluvia y eventos extremos en los Andes Tropicales usando un micro radar de lluvia de apuntamiento vertical. Para esto, (i) se determinó el ciclo diario de lluvia; (ii) se caracterizó la bright band; (iii) se caracterizó la columna de agua y los perfiles verticales promedio de reflectividad. Se utilizaron 5 años de datos medidos con un radar de apuntamiento vertical instalado en Cuenca, Ecuador. Los principales resultados indican que (i) los eventos de lluvia con altas intensidades se concentran entre las 12:30 – 20:00 h (Tiempo Local), y en este intervalo se registra el 77 % del total de lluvia; (ii) la bright band tiene un espesor entre 200 y 400 m y su parte superior (capa de fusión) se ubica entre 4500 y 4900 m snm; y (iii) la lluvia muestra una alta variabilidad en la columna de agua: durante la etapa convectiva los valores de reflectividad pueden aumentar hasta en un 94 % desde la capa de fusión hasta la superficie. Los resultados evidencian la alta complejidad de los eventos de lluvia de la zona andina y la necesidad de considerar estos aspectos para mejorar la precisión de MC y ECL.

Detalles del artículo

Número
Vol. 41 Núm. 1 (2025): (marzo 2025 -agosto 2025)
Sección
Artículo Científico
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Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.

 Universidad Politécnica Salesiana of Ecuador preserves the copyrights of the published works and will favor the reuse of the works. The works are published in the electronic edition of the journal under a Creative Commons Attribution/Noncommercial-No Derivative Works 3.0 Ecuador license: works can be copied, used, disseminated, transmitted and publicly displayed.

The undersigned author partially transfers the copyrights of this work to Universidad Politécnica Salesiana of Ecuador for the printed edition.

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