72854fcb-4739-46db-a595-d120c27dda4f English HELCOM Secretariat data@helcom.fi 2023-04-14T14:11:12 EPSG:3035 Cyanobacterial bloom index HOLAS 3 2023-03-18 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/72854fcb-4739-46db-a595-d120c27dda4f This pre-core indicator evaluates the eutrophication status of the Baltic Sea area based on cyanobacterial bloom index. The index is calculated using two types of data: biomass data and Earth observation data. More detailed description on methodology can be found at HELCOM pre-core indicator report and http://www.helcom.fi/Documents/Eutrophication%20assessment%20manual.pdf This dataset displays the result of the indicator in HELCOM Assessment Scale 4 (Division of the Baltic Sea into 17 open sea sub-basins and division of coastal areas to WFD water types or water bodies), but applicable only to certain open sea assessment units. Attribute information: "HELCOM_ID" = Code of the HELCOM scale 4 assessment unit "Country" = country/ opensea "level_2" = name of the subbasin "level_4" = Name of the HELCOM scale 4 assessment unit "Area (km2)" = Area of the HELCOM scale 2 assessment unit “Season” = Season of the indicator (Summer = June-September) “Period” = Assessment unit period start and end year (20162021 = 2016 – 2021) "Indicator value (ES)" = Indicator value calculated for the assessment unit "Standard deviation (STD)" = Standard deviation of data used for calculating ES "Number of samples " = Number of samples (not applicable for cyanobacterial bloom index) "Threshold value (ET)" = Commonly agreed threshold value "Ratio between ES and ET (ER)" = Ratio between ES and ET (in case of indicator with positive response to eutrophication) "ES_SCORE” = Confidence based on the data used for calculating ES "ET_SCORE” = Confidence of target-setting procedure "I_SCORE” = Confidence (%) = average of ES-Score and ET-Score "Indicator Weight" = Indicator Weight in integrated eutrophication assessment “Status” = Status of the indicator (“Achieve”, “Fail”, “Not assessed” or "Not applicable") "AULEVEL" = Assessment unit level used for the indicator "FID_12" = "Indicator" = Indicator name “CONFIDENCE” = Confidence of result based on I-SCORE (“High”, “Moderate”, “Low” or "Not assessed") HELCOM Secretariat data@helcom.fi Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS HOLAS3 Pre-Core indicator 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 7.5265 33.7966 52.5359 66.4241 2016-01-01 2021-12-31 ESRI Shapefile 1.0 https://maps.helcom.fi/website/MADS/download/?id=72854fcb-4739-46db-a595-d120c27dda4f WWW:LINK-1.0-http--link Download Cyanobacterial bloom index HOLAS 3 https://maps.helcom.fi/website/mapservice/?datasetID=72854fcb-4739-46db-a595-d120c27dda4f WWW:LINK-1.0-http--link View Cyanobacterial bloom index 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 The remote sensing data source was the daily surface algae products of the Finnish Environment Institute (SYKE) from the years 2003-2014 (operative version of the product can be found on www.syke.fi/surfacealgalblooms), which are in turn based on the respective chlorophyll a and turbidity products. The remote sensing data used in this study were produced with same methods as the operative version but reprocessed in order to provide as harmonized data set as possible. Chlorophyll a concentrations were derived for the MERIS observations using BEAM plug-in processor MERIS Case-2 Water Properties Processor (FUB) according to Schroeder et al. (2007) and Schroeder et al. (2007a; 2007b). The MERIS turbidity estimations applied the BEAM plug-in processor Case 2 Regional (C2R; version 1.6.2) according to Doerffer and Schiller (2007). The use of this processor for MERIS data is supported also by other studies conducted in the Baltic Sea by Kratzer et al. (2008), Beltrán-Abaunza et al. (2014) and Harvey et al. (2015). The MODIS chlorophyll a and turbidity were derived according to Maritorena et al. (2002; 2010) and O’Reilly et al. (1998; 2000). In the case of MODIS data, the algorithms for chlorophyll a and turbidity were adjusted to the best performance when compared to in situ data (available monitoring programme observations). The cyanobacteria biomass was collected and analysed by the HELCOM PEG group. Additional information: http://www.helcom.fi/baltic-sea-trends/indicators/cyanobacterial-bloom-index