Vineyard's Nutritional Status Service – High Resolution

The Vineyard’s Nutritional Status Service provides a set of EO products that deliver information about the nutritional status of the crop. Three products are delivered through this service: light absorption by pigments, chlorophyll a and b content, and nitrogen content. For each product, one EO index has been selected as the most suitable to provide information on the corresponding variable. This service can be requested by LEONSEGS' users at High Resolution (HR) or Very High Resolution (VHR). For the HR option, the chlorophyll a and b content product can be generated using either Sentinel-2 or Landsat 8/9 data, with the system automatically selecting the best available option. The light absorption by pigments and nitrogen content products require the red-edge band for the calculation of the corresponding EO indices and can therefore only be generated using Sentinel-2 data.

This service is part of the set of Earth Observation (EO) services developed in order to illustrate, test, validate and demonstrate the LEONSEGS capabilities. The defined use cases are implemented and tested in two Areas of Interest (AoIs), located in Spain and Austria. This service is only provided for the Spanish use case, focused on vineyard monitoring.

This record provides examples of the outputs produced by the LEONSEGS system in response to a user requesting the Vineyard’s Nutritional Status service at HR level.

Outputs:
• The Modified Anthocyanin Reflectance Index (mARI), used to provide the light absorption by plant pigments information. 
• The Chlorophyll Index Green (CIgreen), used to provide the chlorophyll a and b content. 
• The Visible Atmospherically Resistant Index RedEdge (VARIrededge), used to provide the plant nitrogen content of the plants. 

For each EO index product, the following files are provided:
      - GeoTIFF raster containing the original index values
      - Categorized GeoTIFF raster
      - RGB visualization GeoTIFF
      - PNG legend associated with the RGB visualization
      - Raster footprint geometry (.wkt)
      - ISO 19115/19139 metadata (.xml)
      - STAC metadata (.geojson)

The categorized values have been specifically adjusted for vineyard crops according to crop phenology; therefore, these values are not applicable to other crop types.

For a given EO product, multiple examples may be available, representing the full range of satellite missions: Landsat 8, Landsat 9, Sentinel-2A, Sentinel-2B, and Sentinel-2C.