Arpa Piemonte - Sentinel 2 image mosaic - Autumn 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 program during the autumn of 2021 over Piedmont. For each of the bands of visible light from the multi-time stack (B4 Red, B3 Green, B2 Blue) the median reflectance value of each pixel was calculated to arrive at composing an image in real colors of seasonal synthesis. Before merging into the stack, the individual images were suitably masked to eliminate the cloud cover. The mosaic was created by Arpa Piemonte as part of the activities connected to the 2022 national soil consumption monitoring project conducted by the National System for Environmental Protection (SNPA) through the coordination of ISPRA and the involvement of various 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.

Data and Resources

Additional Info

Field	Value
Last Updated	May 3, 2023, 22:26 (UTC)
Created	May 3, 2023, 22:26 (UTC)
GUID	arlpa_to:SENTINEL2_AUTUMN_2021-2022-12-15:16:16
access_constraints	["Restrictions for the map service: http://webgis.arpa.piemonte.it/w-met/_Licenze/Licenza_map_service.pdfRestrictions for the dataset: For further information, see the website https://scihub.copernicus.eu/ and https://sentinels.copernicus.eu/documents/247904/690755/Sentinel_Data_Legal_Notice"]
bbox-east-long	9.98
bbox-north-lat	46.50
bbox-south-lat	44.05
bbox-west-long	6.60
contact-email	webgis@arpa.piemonte.it
coupled-resource	[]
dataset-reference-date	[{"type": "creation", "value": "2020-01-10"}, {"type": "publication", "value": "2020-01-10"}, {"type": "revision", "value": "2020-12-15"}]
frequency-of-update	notPlanned
graphic-preview-file	http://webgis.arpa.piemonte.it/w-metadoc/thumbnail/Sentinel2_autunno_2018.jpg
graphic-preview-type	jpg
harvest_object_id	abf5bedd-ca2c-4596-ad88-69eeb4a37a36
harvest_source_id	5045f9a0-4055-43f6-b140-9cd49466666b
harvest_source_title	GeoDatiGovIt RNDT
licence	["Copernicus Sentinel Data - This service contains modified Copernicus Sentinel data (years: 2019) Any initiative to disseminate the information contained in the dataset or derived from it (cartograms, reports, information services), must always mention the source of the original data (authors, owner). For any aggregation or re-elaboration of the data provided aimed at the creation of products other than the original, while the obligation to cite the source remains, we decline all responsibility."]
lineage	The dataset constitutes a mosaic of images acquired by the Sentinel 2A satellite during the autumn of 2021. Although the images that make up the mosaic refer to a single season, they are not necessarily contemporary: in fact, several satellite passages are needed to cover the entire regional territory . The images were downloaded from the European site https://scihub.copernicus.eu/ which makes available all the satellite images acquired within the Copernicus project. The choice of images to use (in the form of tiles) falls on those with less cloud cover and, when incomplete, on those that integrate the missing portions. After an appropriate composition of bands (4 out of 13 available) and visual stretching to improve their readability, they are mosaiced and published in the form of a cache with clipping on regional borders (Piedmont - Liguria - VDA).
metadata-date	2021-10-01
metadata-language	ita
progress
resource-type	dataset
responsible-party	[{"name": "Arpa Piemonte", "roles": ["pointOfContact"]}]
spatial	{"type": "Polygon", "coordinates": [[[6.6, 44.05], [9.98, 44.05], [9.98, 46.5], [6.6, 46.5], [6.6, 44.05]]]}
spatial-data-service-type
spatial-reference-system
spatial_harvester	true
temporal-extent-begin	2019-09-23
temporal-extent-end	2019-12-21