Information for Sensor and Index

Formula

General Formula	$\frac{GREEN - RED}{GREEN + RED}$
Specific Formula	$\frac{4 - 9}{4 + 9}$
Calculated	Automatic
Comment

Sensor

Name	MERIS
Full Name	Medium Resolution Imaging Spectrometer
Bands	15
Spectrum [nm]	407.5-905
Spat.Res. [m]	300-300
Inclination	68.5
Platform	Envisat
Operator	ESA
Date of Launch	0000-00-00
Comment	15 spectral bands, programmable in width and position, in the visible and near infra-red
Usable for Indices	yes
Description

Index

Name	Normalized Difference Green/Red Normalized green red difference index, Visible Atmospherically Resistant Indices Green (VIgreen)
Abbreviation	NGRDI
Formula	$\frac{GREEN - RED}{GREEN + RED}$
Variables
Expl. of Variables
Wavelengths	490:570,640:760
Source	Original formula
Description

References

Nr.	Author/Title	Year	Comment
1	Gitelson, A. A.; Kaufman, Y. J.; Stark, R.; Rundquist, D. - Novel algorithms for remote estimation of vegetation fraction	2002
2	Zarco-Tejada, P. J.; Miller, J. R.; Noland, T. L.; Mohammed, G. H.; Sampson, P. H. - Scaling-up and model inversion methods with narrow-band optical indices for chlorophyll content estimation in closed forest canopies with hyperspectral data	2001

Visualisation

Sensor

Index