Baltic Sea vegetation in Finland and Sweden in summer 2019/Coverage of aquatic vegetation in Finland and Sweden in the Baltic Sea in summer 2019.

**[EN]** In 2021, the Blue Carbon Habitats* project of the Finnish Environment Institute and Stockholm University produced a water vegetation overlay map from the Finnish coast and the two pilot areas in Sweden to map the distribution of reeds. The value 1 of the material indicates vegetation, 0 water and 127 non-interpretation areas (so-called nodata). The data is based on the observations of the Sentinel-2 satellite series MSI instrument from July 2019. The vegetation index (NDVI) and the distance of the observation embryo from the shore are the predictive variables for assessing vegetation coverage (weeds, reeds, macrophytic aquatic vegetation). The interpretation of satellite data is made with a resolution of 10 m and only for the Baltic Sea shore zone. The smallest unit in the data is composed of five observation elements and is therefore five ares size. The material is part of SYKE’s open data (CC BY 4.0). The data is based on monthly reflectance values downloaded from [S2 Global Mosaic](https://s2gm.sentinel-hub.com/) from Sentinel-2 channels 4 and 8. The full title of the project was: “Blue Carbon Habitats — a comprehensive mapping of Nordic salt Marshes for estimating Blue Carbon storage potential — a pilot study”, funded by the Nordic Council of Ministers. *** **[En]** In 2021, the Blue Carbon Habitats* project of the Finnish Environment Institute and Stockholm University produced a land cover map of aquatic vegetation of the Finnish coast and two pilot areas in Sweden, with the aim of mapping the distribution of reed belts. The value 1 in the layer indicates vegetation, the value 0 water and 127 areas excluded from the interpretation (so-called nodata areas). The data are based on observations from the Sentinel-2 satellite series MSI instrument from July 2019. The vegetation index (NDVI) and the distance of the observation cell from the shore are predictor variables used to estimate cover of aquatic vegetation (reeds, sedges, rushes, macrophytic aquatic vegetation). From the satellite data, the interpretation is made with a resolution of 10 m and only applies to the coastal zone of the Baltic Sea. The Mininum MappED Unit (MMU) of the data consists of five observation cells and is thus the size of five ares. The dataset is part of SYKE’s open data policy (CC BY 4.0). The data is based on monthly reflectance values from Sentinel-2 bands 4 and 8 downloaded from [S2 Global Mosaic](https://s2gm.sentinel-hub.com/). The full name of the project was: ‘Blue Carbon Habitats — a comprehensive mapping of Nordic salt Marshes for estimating Blue Carbon storage potential — a pilot study,’ and it was funded by the Nordic Council of Ministers. *** **WMS server/WMS service endpoint**: https://geoserver2.ymparisto.fi/geoserver/eo/wms **WMS level/WMS layer**: BLUECARBON_VEGETATION_FINSWEDEMO *** **[EN]** Material is a unique experimental material produced to meet the needs of the completed project. It is no longer actively maintained. **[En]** This is a unique test dataset produced for the needs of a completed project. It is no longer actively maintained.