AI-generated Key Takeaways
-
This MODIS dataset provides daily global Normalized Difference Snow Index (NDSI) values derived from MOD09GA surface reflectance composites.
-
NDSI, ranging from -1.0 to 1.0, helps identify snow cover based on reflectance differences in the visible and mid-infrared spectrum.
-
This dataset is deprecated; consider using the updated MODIS/MOD09GA_006_NDSI dataset for current snow cover information.
-
Data is available from February 24, 2000, to March 30, 2017, and is freely accessible for research, education, and non-profit use.
-
The dataset is provided by Google and has no restrictions on subsequent use, sale, or redistribution.

- Dataset Availability
- 2000-02-24T00:00:00Z–2017-03-30T00:00:00Z
- Dataset Provider
- Cadence
- 1 Day
- Tags
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/MOD09GA 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.