MODIS Aqua Daily NDSI

  • The MODIS/MYD09GA_006_NDSI dataset provides daily Normalized Difference Snow Index (NDSI) values globally from July 4, 2002, to February 25, 2023.

  • NDSI, derived from MODIS surface reflectance, helps identify snow cover by comparing reflectance in the visible and mid-infrared spectrum, with values ranging from -1.0 to 1.0.

  • The dataset is freely available for use, sale, and redistribution through Google Earth Engine, a platform for geospatial data analysis and visualization.

  • This dataset is provided by Google and is part of the MODIS Aqua collection, offering a 463.313-meter pixel resolution.
MODIS/MYD09GA_006_NDSI
Dataset Availability
2002-07-04T00:00:00Z–2023-02-25T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("MODIS/MYD09GA_006_NDSI")
Cadence
1 Day
Tags
aqua
daily
global
modis
myd09ga
ndsi
surface-reflectance
usgs
vegetation-indices

Description

The Normalized Difference Snow Index is used to identify snow, based on its characteristically higher reflectance in the visible portion of the spectrum compared to the mid-IR. NDSI is computed using the Green and Mid-IR bands, and has a range of -1.0 to 1.0. See Riggs et al. (1994) for details. This product is generated from the MODIS/006/MYD09GA surface reflectance composites.

Bands

Bands

Name Pixel Size Description
NDSI 463.313 meters

Normalized Difference Snow Index

Terms of Use

Terms of Use

MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('MODIS/MYD09GA_006_NDSI')
                  .filter(ee.Filter.date('2018-04-01', '2018-06-01'));
var colorized = dataset.select('NDSI');
var colorizedVis = {
  palette: ['000088', '0000ff', '8888ff', 'ffffff'],
};
Map.setCenter(-7.03, 31.05, 2);
Map.addLayer(colorized, colorizedVis, 'Colorized');
Open in Code Editor
The Normalized Difference Snow Index is used to identify snow, based on its characteristically higher reflectance in the visible portion of the spectrum compared to the mid-IR. NDSI is computed using the Green and Mid-IR bands, and has a range of -1.0 to 1.0. See Riggs et al. (1994) for …
MODIS/MYD09GA_006_NDSI, aqua,daily,global,modis,ndsi,surface-reflectance,usgs,vegetation-indices
2002-07-04T00:00:00Z/2023-02-25T00:00:00Z
-90 -180 90 180
Google Earth Engine