Modified Soil Adjusted Vegetation Index (MSAVI) minimizes the effect of bare soil on the Soil Adjusted Vegetation Index (SAVI).
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Landsat Surface Reflectance-derived Modified Soil Adjusted Vegetation Index (MSAVI) are produced from Landsat 4–5 Thematic Mapper (TM), Landsat 7 Enhanced Thematic Mapper Plus (ETM+), and Landsat 8-9* Operational Land Imager (OLI)/Thermal Infrared Sensor (TIRS) Collection 1 and Collection 2 scenes that have been processed to Landsat Level-2 Surface Reflectance products. *Landsat 9 = Collection 2 only
MSAVI minimizes the effect of bare soil on the Soil Adjusted Vegetation Index (SAVI). MSAVI is calculated as a ratio between the R and NIR values with an inductive L function applied to maximize reduction of soil effects on the vegetation signal.
(2 * NIR + 1 – sqrt ((2 * NIR + 1)2 – 8 * (NIR - R))) / 2
In Landsat 4-7, MSAVI = (2 * Band 4 + 1 – sqrt ((2 * Band 4 + 1)2 – 8 * (Band 4 – Band 3))) / 2.
In Landsat 8-9, MSAVI = (2 * Band 5 + 1 – sqrt ((2 * Band 5 + 1)2 – 8 * (Band 5 – Band 4))) / 2.
MSAVI is delivered as a single band product, specified as shown in the table below.
| Attribute | Value |
|---|---|
| Long Name | Modified Soil Adjusted Vegetation Index |
| Short Name | LC8MSAVI, LE7MSAVI, LT5MSAVI, or LT4MSAVI |
| File Name | *_sr_msavi.tif |
| Data Type | Signed 16-bit Integer |
| Units | Spectral Index (Band Ratio) |
| Valid Range | -10,000 — 10,000 |
| Fill Value | -9999 |
| Saturate Value | 20,000 |
| Scale Factor | *0.0001 |
Data Access
Landsat Surface Reflectance-derived MSAVI are produced on-demand, using the USGS Earth Resources Observation and Science (EROS) Center Science Processing Architecture (ESPA) On Demand Interface.
Visit the Landsat Surface Reflectance-derived Spectral Indices page for information on product contraints, citation, and reference information.