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Inicio  /  Hydrology  /  Vol: 9 Par: 3 (2022)  /  Artículo
ARTÍCULO
TITULO

Drivers of Dust-Enhanced Snowpack Melt-Out and Streamflow Timing

Steven R. Fassnacht    
Caroline R. Duncan    
Anna K. D. Pfohl    
Ryan W. Webb    
Jeffrey E. Derry    
William E. Sanford    
Danielle C. Reimanis and Lenka G. Doskocil    

Resumen

The presence of dust on the snowpack accelerates snowmelt. This has been observed through snowpack and hydrometeorological measurements at a small study watershed in southwestern Colorado. For a 13-year period, we quantified the annual dust-enhanced energy absorption (DEAE) and used this information to model the snowpack melt-out under observed (with dust present) and clean conditions (no dust). We determine the difference in snow cover duration between actual (dust present) and simulated ideal (clean) snowpack (?SAG) to characterize the shifts in melt timing for each year. We compute the center of mass of runoff (tQ50) as a characteristic of snowmelt. DEAE, ?SAG and tQ50 vary from year to year, and are dictated by the quantity of snow accumulation, and to a lesser extent the number of dust events, the annual dust loading, and springtime snowfall.

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MATERIAS
INFRAESTRUCTURA
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