The Normalized Difference Snow Index

The Normalized Difference Snow Index (NDSI) was designed to estimate the amount of a pixel covered in snow (Riggs et al. 1994):

NDSI = (green – SWIR) / (green + SWIR

example

};

// Data

// get landsat 8 image
var image = ee.Image(“LANDSAT/LC08/C01/T1_RT_TOA/LC08_148035_20131103″);

// Functions

// calculate ndsi
var ndsi = image.normalizedDifference([‘B3’, ‘B6’]);

// Add to map
Map.addLayer(ndsi,viz,”snow index K2”);
Map.centerObject(ndsi,7);

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