Normalized Difference Vegetation Index for Andalusia Region based on MODIS

<p><strong>Normalized Difference Vegetation Index</strong> (NDVI) calculated using MODIS09 imagery provided by USGS/EROS.The original MODIS09 bands were used as data source and then the ndvi was calculated.&nbsp;</p> <p>NDVI&nbsp;quantifies vegetation by measuring the difference between near-infrared&nbsp;and red light (which vegetation absorbs). NDVI is a standardized way to measure healthy vegetation. High NDVI values indicates&nbsp;healthy vegetation.</p> <p><br> Each compressed file contains the NDVI by years. Internally each file have an ISO TC 211 metadata with a complete geographical description.</p> <p>spatial resolution: 463.313m<br> format: GeoTiff<br> reference system:SR-ORG 6842</p> <p>&nbsp;</p> <p>To easily manage the data, each file follow name structure:</p> <p>YYYYMMDD_medgold_workpackage_AoI_sensor_index.</p> <p>YYYYMMDD: Imagery acquisition date</p> <p>medgold: Project name</p> <p>sensor: sensor name</p> <p>workpackage: sectorial workpackage name ( WP2 - Olive Oil Sector, WP3 &ndash; Grape Wine sector, WP4- &nbsp;Durum wheat pasta sector)</p> <p>AoI: Andalusia, Douro Valley.</p> <p>Index: NDVI, NMDI, NDWI</p> <p>Example:</p> <p>20000218_medgold_wp2_andalusia_MOD09A1_ndvi</p> <p>&nbsp;</p>