Period: 2016 – present

Sensor: Sentinel 2 MSI

Frequency: 5 days at equator

Resolutions: 20m

Extent: Global

The product algorithm can be accessed here.

Algorithm description:

Anthocyanin Reflectance Index (ARI1) can be calculated as:

$ARI1\quad =\frac { 1 }{ { R }_{ Band3 } } \quad -\quad \frac { 1 }{ { R }_{ Band5 } }$

Accuracy: Product is new and has not been validated.

Reference:

Gitelson, A. A., Merzlyak, M. N. & Chivkunova, O. B. Optical Properties and Nondestructive Estimation of Anthocyanin Content in Plant Leaves. Photochem. Photobiol. 74, 38–45 (2001).