Information for Sensor and Index

Formula

General Formula	$(n (1 - 0.25 n) - \frac{RED - 0.125}{1 - RED})$
Specific Formula	$(\frac{2 ({VIS_0.8_}^{2} - {HRV}^{2}) + 1.5 VIS_0.8_+ 0.5 HRV}{VIS_0.8_+ HRV + 0.5} (1 - 0.25 \frac{2 ({VIS_0.8_}^{2} - {HRV}^{2}) + 1.5 VIS_0.8_+ 0.5 HRV}{VIS_0.8_+ HRV + 0.5}) - \frac{HRV - 0.125}{1 - HRV})$
Calculated	Automatic
Comment

Sensor

Name	SEVIRI
Full Name
Bands	12
Spectrum [nm]	560-14400
Spat.Res. [m]	1000-3000
Inclination	0
Platform	MSG (Meteosat Second Generation)
Operator
Date of Launch	0000-00-00
Comment
Usable for Indices	yes
Description

Index

Name	Global Environment Monitoring Index
Abbreviation	GEMI
Formula	$(n (1 - 0.25 n) - \frac{RED - 0.125}{1 - RED})$
Variables	n = ( 2 * ( NIR ^2 - RED ^2) + 1.5 * NIR + 0.5 * RED ) / ( NIR + RED + 0.5 )
Expl. of Variables
Wavelengths	640:760,780:1400
Source	Original formula
Description	Bannari 1996

References

No results for the selected combination.

Visualisation

Sensor

Index