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GEMI INDEX [1 record]

Record 1 2006-05-15

English

Subject field(s)
  • Environmental Studies and Analyses
  • Remote Sensing
  • Biogeography
DEF

A non-linear index to monitor global vegetation from satellites.

CONT

The Global Environment Monitoring Index(GEMI, Pinty and Verstraete 1992), is another method that minimizes atmosphere-induced variations in the vegetation index. The GEMI index also provides greater sensitivity to changes in biomass at high levels of biomass.

OBS

global environment monitoring index; GEMI : term and abbreviation officially approved by the RADARSAT-2 Terminology Approval Group(RTAG).

French

Domaine(s)
  • Études et analyses environnementales
  • Télédétection
  • Biogéographie
DEF

Indice obtenu par la combinaison non linéaire de deux canaux spectraux identiques à ceux utilisés dans l'indice de Tucker mais pondérés par des coefficients.

CONT

Le GEMI est un indice de végétation non linéaire développé par Pinty & Verstraete (1992) pour minimiser l'effet de l'atmosphère sur la mesure.

OBS

Cet indice est destiné à l'étude de l'état, de la distribution spatiale et de l'évolution temporelle de la couverture végétale, sur une région du globe, à partir de données multibandes de satellites.

OBS

indice de végétation zonale; GEMI : terme et abréviation uniformisés par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).

Spanish

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