Skip to Main Content
Topographic, meteorologic, and canopy controls on the scaling characteristics of the spatial distribution of snow depth fieldsAuthor(s): Ernesto Trujillo; Jorge A. Ramirez; Kelly J. Elder
Source: Water Resources Research. 43, W07409, doi:10.1029/2006WR005317.
Publication Series: Miscellaneous Publication
PDF: Download Publication (675 B)
DescriptionIn this study, LIDAR snow depths, bare ground elevations (topography), and elevations filtered to the top of vegetation (topography + vegetation) in five 1-km2 areas are used to determine whether the spatial distribution of snow depth exhibits scale invariance, and the control that vegetation, topography, and winds exert on such behavior. The one-dimensional and mean two-dimensional power spectra of snow depth exhibit power law behavior in two frequency intervals separated by a scale break located between 7 m and 45 m. The spectral exponents for the low-frequency range vary between 0.1 and 1.2 for the one-dimensional spectra, and between 1.3 and 2.2 for the mean twodimensional power spectra. The spectral exponents for the high-frequency range vary between 3.3 and 3.6 for the one-dimensional spectra, and between 4.0 and 4.5 for the mean two-dimensional spectra. Such spectral exponents indicate the existence of two distinct scaling regimes, with significantly larger variations occurring in the larger-scale regime. Similar bilinear power law spectra were obtained for the fields of vegetation height, with crossover wavelengths between 7 m and 14 m. Further analysis of the snow depth and vegetation fields, together with wind data, support the conclusion that the break in the scaling behavior of snow depth is controlled by the scaling characteristics of the spatial distribution of vegetation height when snow redistribution by wind is minimal and canopy interception is dominant, and by the interaction of winds with features such as surface concavities and vegetation when snow redistribution by wind is dominant.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationTrujillo, Ernesto; Ramirez, Jorge A.; Elder, Kelly J. 2007. Topographic, meteorologic, and canopy controls on the scaling characteristics of the spatial distribution of snow depth fields. Water Resources Research. 43, W07409, doi:10.1029/2006WR005317.
Keywordssnow depth, LIDAR, topography, vegetation, spatial distribution
- Interannual consistency in fractal snow depth patterns at two Colorado mountain sites
- A distributed snow-evolution modeling system (SnowModel)
- Mesocell study area snow distributions for the Cold Land Processes Experiment (CLPX)
XML: View XML