Harp Piemonte — Mosaic pictures Sentinel 2 — Spring 2021

The image is a multitemporal mosaic produced from the collection of images acquired by the pair of Sentinel 2A-2B satellites of the European Copernicus programme during spring 2021 on Piedmont. For each of the visible bands from the multitemporal stack (B4 Red, B3 Green, B2 Blue) the median reflectance value of each pixel has been calculated to compose an image in real colors of seasonal synthesis. Before entering the stack, the individual images were appropriately masked to eliminate the cloud cover.The mosaic was realised by Arpa Piemonte as part of the activities related to the national soil consumption monitoring project 2021 conducted by the National System for Environmental Protection (SNPA) through the coordination of ISPRA and the involvement of several regional agencies. The project aims to monitor the transformations of the territory due to urban, infrastructural, commercial expansions, etc. with the consequent loss of natural, agricultural and semi-natural soil, understood as an essential and fundamentally non-renewable environmental resource.