Monitoring spatio-temporal snow depth in the Chilean Andes using spaceborne tri-stereo photogrammetry

Data provided for submitted work: Thomas E. Shaw, César Deschamps-Berger, Simon Gascoin, James McPhee Monitoring spatial and temporal differences in Andean snow depth derived from satellite tri-stereo photogrammetry --------- Contents: 'SDmap_2017_3m.tif' = Filtered DEM difference for September 4th 2017. 'SDmap_2019_3m.tif' = Filtered DEM difference for September 2nd 2019. 'SDmap_gapfilled_2017_3m.tif' = Filtered DEM difference for September 4th 2017, gap-filled by random forest model. Random forest model initialised by 100 runs, using all available snow depths in 2017 and topographic indices as predictors (Shaw et al., 2020). 'SDmap_gapfilled_2019_3m.tif' = As above, but for the filtered DEM difference of September 2nd 2019. 'Slope_3m.tif' = Slope angle (°) derived from the snow-free DEM (6th January 2018). 'TPI_3m.tif' = Topographic position index (TPI - Revuelto et al., 2014) derived from the snow-free DEM (6th January 2018) based upon a 60 m search distance. 'Aspect_3m.tif' = Aspect (°) derived from the snow-free DEM (6th January 2018). 'Exposure_SX_3m.tif' = Exposure parameter (SX) based upon Winstral et al. (2002) derived from the snow-free DEM (6th January 2018) and dominant ERA5 10 m wind direction for 2017 and 2019 winter average (45°). 'SkyViewFraction_3m.tif' = Sky view fraction derived from the snow-free DEM (6th January 2018). --------- NOTE: Products of the Pléiades DEM processing are provided here, though publication of the raw Pléiades DEMs are restricted by the regulations of the CNES agreement for grant PNTS‐2018‐ 4. --------- Cited works: Revuelto, J., López-Moreno, J. I., Azorin-Molina, C., & Vicente-Serrano, S. M. (2014). Topographic control of snowpack distribution in a small catchment in the central Spanish Pyrenees: Intra- and inter-annual persistence. The Cryosphere, 8(5), 1989–2006. https://doi.org/10.5194/tc-8-1989-2014 Shaw, T. E., Gascoin, S., Mendoza, P. A., Pellicciotti, F., & McPhee, J. (2020). Snow Depth Patterns in a High Mountain Andean Catchment from Satellite Optical Tristereoscopic Remote Sensing Water Resources Research. Water Resources Research, 56, 1–23. https://doi.org/10.1029/2019WR024880 Winstral, A., Elder, K., & Davis, R. E. (2002). Spatial Snow Modeling of Wind-Redistributed Snow Using Terrain-Based Parameters. Journal of Hydrometeorology, 3(5), 524–538. https://doi.org/10.1175/1525-7541(2002)003<0524:SSMOWR>2.0.CO;2