bd70f21d-17c6-4451-ab65-3d2df30dda79 Start-of-season date 2017-present (raster 10m and 100m) Copernicus Land Monitoring Service JRC-Copernicus-Land@ec.europa.eu https://land.copernicus.eu/ European Environment Agency Point of contact sdi@eea.europa.eu 2022-11-10 English The Start-of-Season Date (SOSD), one of the Vegetation Phenology and Productivity (VPP) parameters, is a product of the pan-European High Resolution Vegetation Phenology and Productivity (HR-VPP) component of the Copernicus Land Monitoring Service (CLMS). The Start-of-Season Date (SOSD) marks the date when the vegetation growing season starts in the time profile of the Plant Phenology Index (PPI). The start-of-season occurs, by definition, when the PPI value reaches 25% of the season amplitude during the green-up period. The Plant Phenology Index (PPI) is a physically based vegetation index, developed for improving the monitoring of the vegetation growth cycle. The PPI index values, with 5-day satellite revisit cycle, are first used in a function fitting to derive the PPI Seasonal Trajectories, which is a filtered time series with regular 10-day time step. From these Seasonal Trajectories, a suite of 13 Vegetation Phenology and Productivity (VPP) parameters are then computed and provided, for up to two seasons each year. The Start-of-Season Date is one of the 13 parameters. The full list is available in the table 3 of the Product User Manual in the below link section. A complementary quality indicator (QFLAG) provides a confidence level, that is described in table 4 of the same manual. The SOSD dataset is made available as raster files with 10 x 10m and 100 x 100m resolutions, in ETRS89-LAEA projection corresponding to the HRL grid, for those tiles that cover the EEA38 countries and the United Kingdom and for two seasons in each year from 2017 onwards. It is updated in the first quarter of each year. EEA38 (from 2020) United Kingdom Spatial extent Copernicus Growing season Phenology Plants EEA keyword list Environmental monitoring facilities Habitats and biotopes Orthoimagery GEMET - INSPIRE themes, version 1.0 The Copernicus component is governed by Regulation (EU) No 2021/696 of the European Parliament and of the Council of 28 April 2021 establishing the Union Space Programme and the European Union Agency for the Space Programme and repealing Regulations (EU) No 912/2010, (EU) No 1285/2013 and (EU) No 377/2014 and Decision No 541/2014/EU. Within the Copernicus component, a portfolio of land monitoring activities has been delegated by the European Union to the European Environment Agency (EEA) and the DG Joint Research Centre of the European Commission. No limitations to public access https://inspire.ec.europa.eu/metadata-codelist/LimitationsOnPublicAccess/noLimitations Copernicus Land Monitoring Service (requires authentication) https://land.copernicus.eu/en/products/vegetation/high-resolution-start-of-season-date#download WEkEO Portal (requires authentication) https://wekeo.copernicus.eu/data?view=catalogue&facets=contactOrg%7EEuropean+Environment+Agency Product Information and Technical Documentation https://land.copernicus.eu/en/products/vegetation EEA Geospatial Data Catalogue https://doi.org/10.2909/9d63441b-0ce1-4ef6-a4fa-ecab6af8d506 Europe -25 45 72 26 2017-01-01 European Commission Owner https://commission.europa.eu/ Copernicus Land Monitoring Service Custodian JRC-Copernicus-Land@ec.europa.eu https://land.copernicus.eu/ European Environment Agency Publisher sdi@eea.europa.eu http://www.eea.europa.eu/ Copernicus Land Monitoring Service helpdesk Point of contact JRC-Copernicus-Land@ec.europa.eu https://land.copernicus.eu/en/contact-service-helpdesk Vegetation Phenology and Productivity parameters (VPP) are based on Plant Phenology Index (PPI) seasonal trajectories and are yearly produced for two seasons using the Timesat software. One of the parameters is the start date of the vegetation growing season (Start-of-Season Date - SOSD). The related PPI value and slope (rate of PPI change) for this date are available as well. The data is natively produced in UTM projection, at 10m resolution, and then reprojected to ETRS89-LAEA (EPSG:3035) and resampled to 100m. Copernicus Land Monitoring Service (2022).Start-of-season date 2017-present (raster 10m and 100m), Europe, yearly, Nov. 2022 - adjusted to the HRL grid. European Environment Agency https://doi.org/10.2909/9d63441b-0ce1-4ef6-a4fa-ecab6af8d506.