Snow surface roughness across spatio-temporal scales

Water
By: , and 

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Abstract

The snow surface is at the interface between the atmosphere and Earth. The surface of the snowpack changes due to its interaction with precipitation, wind, humidity, short- and long-wave radiation, underlying terrain characteristics, and land cover. These connections create a dynamic snow surface that impacts the energy and mass balance of the snowpack, blowing snow potential, and other snowpack processes. Despite this, the snow surface is generally considered a constant parameter in many Earth system models. Data from the National Aeronautics and Space Administration (NASA) Cold Land Processes Experiment (CLPX) collected in 2002 and 2003 across northern Colorado were used to investigate the spatial and temporal variability of snow surface roughness. The random roughness (RR) and fractal dimension (D) metrics used in this investigation are well correlated. However, roughness is not correlated across scales, computed here from snow roughness boards at a millimeter resolution and airborne lidar at a meter resolution. Process scale differences were found based on land cover at each of the two measurement scales, as appraised through measurements in the forest and alpine.

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Publication type Article
Publication Subtype Journal Article
Title Snow surface roughness across spatio-temporal scales
Series title Water
DOI 10.3390/w15122196
Volume 15
Issue 12
Year Published 2023
Language English
Publisher MDPI
Contributing office(s) Colorado Water Science Center
Description 2196, 14 p.
Country United States
State Colorado
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