Information for Sensor and Index

Formula

General Formula ( n ( 1 - 0.25 n ) - RED - 0.125 1 - RED )
Specific Formula ( 2 ( NIR22 - Red_phonometer2 ) + 1.5 NIR2 + 0.5 Red_phonometer NIR2 + Red_phonometer + 0.5 ( 1 - 0.25 2 ( NIR22 - Red_phonometer2 ) + 1.5 NIR2 + 0.5 Red_phonometer NIR2 + Red_phonometer + 0.5 ) - Red_phonometer - 0.125 1 - Red_phonometer )
Calculated Automatic
Comment

Sensor

Name GOMOS
Full Name Global Ozone Monitoring by Occultation of Stars
Bands 5
Spectrum [nm] 250-952
Spat.Res. [m] 0-0
Inclination 0
Platform ENVISAT
Operator ESA
Date of Launch 2002-03-01
Comment
Usable for Indices yes
Description

Index

Name Global Environment Monitoring Index
Abbreviation GEMI
Formula ( n ( 1 - 0.25 n ) - 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

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