Protocols
5 protocols
analytical
Satellite-based snow disappearance tracking
Time-series analysis of Landsat and Sentinel satellite imagery to determine seasonal snow disappearance dates using Normalized Difference Snow Index with interpolation algorithms to fill temporal gaps...
analytical
Linear regression gap filling
Statistical method used to fill missing data areas using relationships between 2018 and 2019 snow depths or snow depth to elevation relationships.
analytical
NDVI calculation from NAIP imagery
Calculation of Normalized Differential Vegetation Index from 4-band aerial imagery using (NIR-Red)/(NIR+Red) formula.
analytical
bilinear resampling
Resampling of 0.6m resolution imagery to 1m grid resolution using bilinear interpolation.
analytical
snow-free growing degree day calculation
Temperatures above 5°C summed only for days estimated to be free of snow to measure energy available for biological processes.