38b8dd1c-9dfc-43c5-9336-22a1ea37a6cc English HELCOM Secretariat data@helcom.fi 2023-04-14T14:11:40 EPSG:3035 Relative distribution of nutrient concentration - Total Nitrogen and Phosphorus HOLAS 3 2023-03-15 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/38b8dd1c-9dfc-43c5-9336-22a1ea37a6cc The layer depicts the pressure of eutrophication in the Baltic Sea, based on the data from the HOLAS 3 integrated eutrophication assessment. The methodology utilizes the Eutrophication Quality Ratios (EQRS) available for each HELCOM assessment unit on level 4b. The results of integrated eutrophication assessment combines the information of the three MSFD criteria groups (C1: Nutrient levels, C2: Direct effect, C3: Indirect effect) and use this value as an indication of pressure for each assessment unit. The Spatial Impact and Pressure Assessment is carried out using a 1x1km grid while the Integrated eutrophication status is assessed on vector based HELCOM assessment units, the vector data are rasterized. First, the vector data are rasterized to 100x100m resolution, and after that it is aggregated to a 10x10km grid using a mean value. A 10 km grid is used in order to make the gradients between assessment units slightly smoother and finally the values converted to 1x1 km resolution. The scale for the pressure values in the map (0.26-1) represents the scale in the original source data. HELCOM Secretariat data@helcom.fi Bio-geographical regions GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme phosphorus environmental impact nitrogen GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS HOLAS3 Pressure layer Use constraints: Data can be used freely given that the source is cited (following creative commons license CC-BY). The source should be cited as: “HELCOM HOLAS 3 Dataset (2023)" Access constraints: No limitations on public access. English environment 7.5348 33.8582 52.5021 66.4302 2016-01-01 2021-12-31 ESRI Shapefile 1.0 https://maps.helcom.fi/website/MADS/download/?id=38b8dd1c-9dfc-43c5-9336-22a1ea37a6cc WWW:LINK-1.0-http--link Download Relative distribution of nutrient concentration - Total Nitrogen and Phosphorus HOLAS 3 https://maps.helcom.fi/website/mapservice/?datasetID=38b8dd1c-9dfc-43c5-9336-22a1ea37a6cc WWW:LINK-1.0-http--link View Relative distribution of nutrient concentration - Total Nitrogen and Phosphorus HOLAS 3 Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 HELCOM HOLAS3 HEAT assessment output were converted to 1x1 km grid. Reverse EQRS value are directly used as the pressure value for the layer. In order to follow a precautionary principle, and to have a harmonized methodology with hazardous substances pressure layer, all values that fall into to the worst category (0,8-1,0) are set to have the pressure value 1. The values for the HOLAS 3 assessment have some gaps for certain assessment units, and these data gaps were filled with the HOLAS 2 integrated eutrophication assessment result values. These HOLAS 3 values were normalized according to (ER/pressure values): 0-0,5/0-0,2; 0,5-1/0,2-0,4; 1-1,5/0,4-0,6; 1,5-2/0,6-0,8 and >2/1, for Danish WFD Moderate/0,5; Poor/0,7 and Bad/1.