Inconsistencias temporales en los patrones espaciales del equivalente de agua en nieve: regresiones entre telemetría de nieve y topografía en la cuenca del río Colorado

Autores/as

  • S. R. Fassnacht Watershed Science, Colorado State University
  • K. A. Dressler Office of Research, Pennsylvania State University
  • D. M. Hultstrand Watershed Science, Colorado State University
  • R. C. Bales University of California
  • G. Patterson Watershed Science, Colorado State University

DOI:

https://doi.org/10.3989/Pirineos.2012.167008

Palabras clave:

Río Colorado, SNOTEL, equivalente de agua en nieve, topografía

Resumen


Se analiza la relación entre el equivalente de agua en la nieve (SWE) y 28 variables (27 variables topográficas y otra basada en la densidad del dosel) para la Cuenca del Río Colorado, EE.UU. mediante regresión multivariante. Estas variables incluyen la localización, pendiente y orientación a diferentes escalas, además de variables derivadas para indicar la distancia a las fuentes de humedad y la proximidad a las barreras topográficas, además de las características de las barreras topográficas entre las fuentes de humedad, las áreas de acumulación de nieve y la densidad del dosel. Se utilizaron telemetrías semanales de nieve (SNOTEL) desde 1990 hasta 1999. Las variables más importantes fueron la elevación y la pendiente a escala regional (81 km²). Dada la alta variabilidad estacional e interanual, fue necesario establecer regresiones específicas para cada intervalo disponible de datos. La variación interanual en la relación entre variables topográficas y el SWE se corresponde con la cantidad de nieve acumulada a lo largo de la temporada y el ciclo de El Niño-Oscilación del Pacífico Sur.

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Publicado

2012-05-21

Cómo citar

Fassnacht, S. R., Dressler, K. A., Hultstrand, D. M., Bales, R. C., & Patterson, G. (2012). Inconsistencias temporales en los patrones espaciales del equivalente de agua en nieve: regresiones entre telemetría de nieve y topografía en la cuenca del río Colorado. Pirineos, 167, 165–185. https://doi.org/10.3989/Pirineos.2012.167008

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