Landsat SAVI

Overview
Extent
    Global
Spatial Resolution
    30m
Data Source(s)
    LANDSAT
Science Partner

Description

The Landsat program provides the longest continuous record of satellite earth observations. Landsat spatial, spectral, and temporal resolutions allow for imagery to be processed at sufficient spatial and temporal detail that is optimal for field scale land surface monitoring, management, and research. Landsat data is available for Landsat 5, 7, 8, and composites of 4/5/7/8 using top of atmosphere or at surface reflectance data.

Soil Adjusted Vegetation Index (SAVI) provides information on vegetation growth and productivity while correcting for influences of soil reflectance. Effects due to climate, weather, fire, water, and vegetation and crop management can be assessed through developing and visualizing maps, time series, and anomalies of SAVI.

SAVI is calculated as the normalized difference between the red and near infrared (NIR) bands following the equation (NIR – Red) / (NIR + Red + L), where L is a soil brightness correction factor which is typically 0.5 (Huete 1988; Ray 2020). Soil reflectance adjustments have shown to be useful for applications in sparse vegetative cover.

Bands Used:
Near Infrared (NIR): 0.77-0.90 μm
Red: 0.63-0.69 μm

Technical Information

Feature
Detail
Extent
Global
Period of Record
1984-present
Spatial Resolution
30m
Temporal Resolution
8-16 days
Data Summaries
max, min, mean, median, anomalies, trend and statistical significance, spatial and temporal aggregations, time series
Data Source(s)
U.S. Geological Survey
Data Formats
raster (geotiff), raster tile (tile ID), time series (.csv, .xls, .json, .geojson)

End User License Agreement

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Your license is subject to your prior acceptance of either this Licensed Application End User License Agreement (“Standard EULA”), or a custom end user license agreement between you and the Application Provider (“Custom EULA”), if one is provided.

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