Search results for " aridity indices"

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Estimation of the time lag occurring between vegetation indices and aridity indices in a Sicilian semi-arid catchment

2009

The evolution of drought phenomena in a Sicilian semi-arid catchment has been analyzed processing both remote sensing images and climatic data for the period 1985-2000. The remote sensing dataset includes Landsat TM and ETM+ multispectral images, while the climatic dataset includes monthly rainfall and air temperature. The results have been specifically discussed for areas where it is possible to neglect agricultural activities and vegetation growth is only influenced by natural forcing. The main outcome of this study is the quantification of the time lag between the remote sensing retrieved vegetation indices and the aridity indices (AIs) calculated from climatic data. Moreover the obtaine…

Atmospheric Sciencegeography.geographical_feature_categoryvegetation indices aridity indices drought time series time lagApplied MathematicsMultispectral imageSettore ICAR/02 - Costruzioni Idrauliche E Marittime E IdrologiaDrainage basinVegetationForcing (mathematics)Aridlanguage.human_languageGeographyRemote sensing (archaeology)ClimatologylanguageAridity indexComputers in Earth SciencesSicilianGeneral Environmental Science

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