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Instituto de Ciencias de la Atmósfera y Cambio Climático, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx
Ávila Carrasco, José Roberto, et al. (2024). Enhancing geostatistical precipitation estimations for the Santiago River basin, Mexico. Atmósfera; Vol. 38, 2024; 739-757. Recuperado de https://repositorio.unam.mx/contenidos/4158781
Autor(es)
Ávila Carrasco, José Roberto; Júnez Ferreira, Hugo Enrique; Herrera, Graciela del Socorro
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
Enhancing geostatistical precipitation estimations for the Santiago River basin, Mexico
Fecha
2024-07-05
Resumen
Accurate precipitation estimation is crucial for understanding the hydrological cycle, its applications in basin-specific planning, and outliers event prediction. Multivariate geostatistics leverage correlated variables, such as terrain elevation and shoreline distance, to reduce estimation error uncertainty. However, the distinct characteristics of humid and dry seasons demand specific estimation approaches. Precise precipitation estimation poses a challenge in the vast and diverse Santiago River basin (SRB) along Mexico’s west coast. This study assessed precipitation estimates for dry and humid seasons using ordinary kriging and ordinary cokriging with altitude and shoreline distance as auxiliary variables. Evaluation of error metrics revealed superior results incorporating shoreline distance as a covariable in the wet month of July, especially after logarithmic transformation, yielding a 17% improvement in average standardized error compared to the univariate approach. Conversely, optimal results were achieved for the dry month (February) using ordinary kriging excluding outliers’ values, effectively reducing the average squared error.
Tema
seasonal changes; kriging; cokriging; gridded rain; relief variability; shoreline distance; topographic elevation
Idioma
eng
ISSN
ISSN electrónico: 2395-8812; ISSN impreso: 0187-6236
