Snow water equivalent accumulation patterns from a trajectory approach over the U.S. southern rocky mountains

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Abstract

The spatial characteristics and patterns of snow accumulation and ablation inform the amount of water stored and subsequently available for runoff and the timing of snowmelt. This paper characterizes the snow accumulation phase to investigate the spatiotemporal snow water equivalent (SWE) distribution by fitting a function to the trajectory plot of the standard deviation versus mean SWE across a domain. Data were used from 90 snow stations for a 34-year period across the Southern Rocky Mountains in the western United States. The stations were divided into sub-sets based on elevation, latitude, and the mean annual maximum SWE. The best function was a linear fit, excluding the first 35 mm of SWE. There was less variability with SWE data compared to snow depth data. The trajectory of the accumulation phase was consistent for most years, with limited correlation to the amount of accumulation. These trajectories are more similar for the northern portion of the domain and for below average snow years. This work could inform where to locate new stations, or be applied to other earth system variables.

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APA

Schrock, I. J. Y., Fassnacht, S. R., Collados-Lara, A. J., Sanford, W. E., Pfohl, A. K. D., & Morán-Tejeda, E. (2021). Snow water equivalent accumulation patterns from a trajectory approach over the U.S. southern rocky mountains. Hydrology, 8(3). https://doi.org/10.3390/hydrology8030124

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