Data publication platform of Utrecht University

Vogels, Marjolein

Illustration of irrigation patterns for a subset area in the Central Rift Valley Ethiopia

2019-01-09T08:14:08.000000 Open - freely retrievable

These files show the output for a subset area located in the Central Rift Valley, Ethiopia (incorporates the city Adama and Koka Lake), following the workflow in the associated paper (Spatio-temporal patterns of smallholder irrigated agriculture in the Horn of Africa using GEOBIA and Sentinel-2 imagery from M.F.A. Vogels, S.M. de Jong, G. Sterk, H. Douma, E.A. Addink; Utrecht University). The studied year is September 2016 to August 2017. It contains: 1) the cropland classification, 2) whether crop growth in cropland objects is irrigation- or rainfall-induced between months (e.g. September - October), 3) total number of irrigation events in one year (min: 0, max: 11), 4) total number of irrigation events in the dry season (min: 0, max: 5), and 5) total number of periods that irrigation could not be calculated as a result of cloud cover (cloud cover in the NDVI in one or both months). Data structure: 1) the dry-season mosaic (further information can be found in the paper), 2) 12 monthly NDVI composites (further information can be found in the paper), 3) a shapefile, which contains the polygon (object) geometry with an attribute 'FIDjoin', 4) three csv's, which comprise one csv per spatial-heterogeneity threshold (15%, 25%, 35%) with an attribute 'FIDjoin' and output attributes, 5) a QGIS visualization project.

smallholder irrigation agriculture irrigation monitoring Horn of Africa Google Earth Engine development methods remote sensing object-based image analysis

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