Gaofen-1 CRI550
Carotenoid Reflectance Index 550 for Gaofen-1
Vegetation Satellite Provider: CNSA
Applications
carotenoid content estimation
plant stress detection
photosynthetic efficiency assessment
leaf pigment analysis
plant health monitoring
phenological studies
Quick Stats
Category: vegetation
Sensor: Gaofen-1
Provider: CNSA
Bands Used: 2
Description
The Carotenoid Reflectance Index 550 (CRI550) was developed by Gitelson et al. (2002) to assess carotenoid content in plant leaves. It uses reciprocal reflectance at 510nm (sensitive to carotenoids) and 550nm (to remove chlorophyll effects), providing a non-destructive method for carotenoid estimation.
Formulas
General Formula
Gaofen-1 Specific Formula
(1 / Blue) - (1 / Green)Spectral Band Visualization
Band Wavelengths
510: 510
550: 550
Code Examples
cri550.py
References
Gitelson, A.A., Zur, Y., Chivkunova, O.B., and Merzlyak, M.N. (2002) - Assessing carotenoid content in plant leaves with reflectance spectroscopy. Photochemistry and Photobiology, 75(3), 272-281