972c58e2-b197-4929-aa10-85e703510d64 English HELCOM Secretariat data@helcom.fi 2021-09-09T11:59:00 EPSG:3035 Productive surface wates Chl-a (HOLAS 2) 2016-04-06 https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/972c58e2-b197-4929-aa10-85e703510d64 Springtime Chl-a concentration is here used as a proxy for productive surface waters. In the Baltic Sea Impact Index (BSII), areas with high springtime phytoplankton production will be given higher importance, as they are considered important areas for the Baltic Sea food web. In the current map, mean of springtime maximum weekly values (weeks 12-22, years 2003-2011) Chl-a concentration of the surface waters has been used, derived from satellite data (MERIS). Years 2003-2011 have been used, as there is no MERIS data available for years 2012-2016. The data for eastern Baltic Sea is provided by the Finnish Environment Institute (~300m resolution). Outside this high resolution data, MERIS-data downloaded from JRC-database has been used (~4 km resolution, to calculate average of maximum monthly values for April or May for 2003-2011). Both datasets were converted to 1 km x 1 km grid cells. HELCOM Secretariat data@helcom.fi Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme chlorophyll marine ecology GEMET 2018-08-16 geonetwork.thesaurus.external.theme.gemet-en MADS HOLAS2 ecosystem component Biodiversity Use constraints: Data can be used freely given that the source is cited as "HELCOM HOLAS II Dataset: Productive surface waters (2017)" Access constraints: No limitations on public access. English environment biota 7.530495 34.131647 52.277123 66.475422 2003-01-01 2011-12-31 TIFF https://maps.helcom.fi/website/MADS/download/?id=972c58e2-b197-4929-aa10-85e703510d64 WWW:LINK-1.0-http--link Download dataset 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 Data source: Eastern Baltic Sea (excluding some coastal areas): 300 m resolution satellite data (MERIS) on Chl-a concentration (maximum value of weeks 12-22, 2003-2011) provided by the Finnish Environment Institute. Western Baltic Sea and some coastal areas: 4 km resolution satellite data (MERIS) on Chl-a concentration (maximum monthly value of April-May, 2003-2011), downloaded from EU Joint Research Centre database. Data quality: The data quality can be considered good where higher resolution data is available. Outside this data, the data quality is reduced.