3d-fun / gmbtools

DEM processing and geodetic mass balance calculation for mountain glaciers

gmbtools

Utilities for DEM processing/analysis, calculating geodetic mass balance, and plotting

Developed for the NASA High-mountain Asia Team (HiMAT) and USGS/NPS CONUS glacier programs. Scripts are in various stages of development, and many still have hardcoded paths that need to be cleaned up.

Generic tools:

• make_mos.sh - create 2, 8 and 32-m tiled mosaics, count maps, indices, etc. from a set of input DEMs
• dem_mosaic_validtiles.py - wrapper around ASP dem_mosaic utility to write valid mosaic tiles in parallel
• mb_parallel.py - parallel computation of geodetic mass balance for a set of input glacier polygons and DEM sources
• mb_plot.py - create regional mass balance plots for output from mb_parallel
• dem_gallery.py - create gallery plot for many input DEMs
• dem_anomaly.py - create anomaly maps and animations
• lag_dz.py - create Lagrangian Dh/Dt products (adapted from old script, needs refactoring), requires pixel disparity maps created using https://github.com/dshean/vmap

Continental US (CONUS) tools:

• prism.py - create seasonal PRISM temp and precip products
• mb_bar_plot.py - create seasonal/annual mass balance bar plot (currently SCG, should add cumulative panel)
• conus_site_poly.py - filter available DEMS for sites of interest and generate time series stack products

Data download and wrangling:

• get_srtm_tilelist.py and get_srtm_tiles.sh - Identify, download, process and mosaic SRTM tiles
• get_ned_tiles.sh - Identify, download, process and mosaic NED tiles
• lidar_proc.sh - clean up WA/OR LiDAR data
• process_usgs_dem.py - clean up USGS DEMs generated by M. Fahey from NTM and DG imagery using ERDAS Imagine+LPS

Snowtools repo (moved to https://github.com/dshean/snowtools)

• get_snotel.py - query and extract SNOTEL recordsquery and extract SNOTEL records for arbitrary input raster
• swe.py - Generate snow-water equivalent maps from input elevation change products
• get_modscag.py - query and extract MODSCAG fractional snow-covered area (fSCA) products