Gaofen-1 mARI

Modified Anthocyanin Reflectance Index for Gaofen-1

Vegetation Satellite Provider: CNSA

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Applications

anthocyanin content estimation

leaf density correction

plant stress detection

senescence monitoring

fruit ripeness assessment

improved physiological status monitoring

Quick Stats

Category: vegetation

Sensor: Gaofen-1

Provider: CNSA

Bands Used: 3

Description

The Modified Anthocyanin Reflectance Index (mARI or ARI2) is an enhanced version of ARI that corrects for leaf density and thickness by incorporating a near-infrared band. This modification improves the accuracy of anthocyanin estimation by accounting for leaf scattering properties.

Formulas

General Formula

Gaofen-1 Specific Formula

((1 / Green) - (1 / Panchromatic)) * NIR

Spectral Band Visualization

Band Wavelengths

550: 550

700: 700

NIR: 760-800

Code Examples

ari2.py

References

Gitelson, A.A., Keydan, G.P., and Merzlyak, M.N. (2006) - Three-band model for noninvasive estimation of chlorophyll, carotenoids, and anthocyanin contents in higher plant leaves