Baltic Sea - DIVAnd 6-year seasonal analysis of Water body chlorophyll-a 1974/2021 v2023

Running 6-year analysis of Water body chlorophyll-a in the Baltic Sea. Four seasons (March-May, June-August, September-November, December-February). Every year of the time dimension corresponds to a 6-year centred average. Periods span between 1974-2021. Analyses for depths (m) (HELCOM standard depths): 0, 5, 10, 15, 20, 30.

Data Sources: observational data from SeaDataNet/EMODnet Chemistry Data Network. 
Description of DIVA analysis: Geostatistical data analysis by DIVAnd (Data-Interpolating Variational Analysis in n dimensions) tool. 
GEBCO_08 Grid (30 arc-seconds) topography is used for the contouring preparation. 
Files contain analysed fields, error fields and combined field with the deepest value for each grid point selected. 
Also pre-masked fields using relative error threshold 0.3 and 0.5 are included. 
In the analyses the horizontal correlation length is fixed to 80 km and decreasing towards the coastline, 
the vertical correlation length is varying with depth.
Signal to noise ratio is fixed to 1.0. 
Background fields were created using data for the given time period and season. 
Log transformation was used in the analyses. No detrending, advection constraints or weighting are applied. 
Unit is mg/m3.
Identifier
Source https://data.blue-cloud.org/search-details?step=~012e1da99a3-037f-455d-bf65-2fe85337ca43
Metadata Access https://data.blue-cloud.org/api/collections/e1da99a3-037f-455d-bf65-2fe85337ca43
Provenance
Publisher Blue-Cloud Data Discovery & Access service; EMODnet Chemistry
Contributor EMODnet Chemistry; Swedish Meteorological and Hydrological Institute; Aarhus University, Department of Bioscience, Marine Ecology Roskilde; Baltic Sea 2020; Billerud Karlsborg Ab; Blekingekusten Coalition of Water Conservation; Carl von Ossietzky University of Oldenburg, Institute for Chemistry and Biology of the Marine Environment; Chief Inspectorate for Environmental Protection; Coastal Committee of Kalmar County; Coastal Committee of Svealand; Committee of North Eastern Halsingland Coordinated Recipient Monitoring; County Administration Board of Norrbottens lan; County Administration Board of Sodermanlands lan; County Administration Board of Stockholm lan; County Administration Board of Uppsala lan; County Administration Board of Vasternorrlands lan; County Administrative Board of Gotland; County Administrative Board of Vasterbotten; DTU Aqua, National Institute of Aquatic Resources, Technical University of Denmark; Dalalven Water Conservation Association; Department of Marine Systems at Tallinn University of Technology; Estonian Marine Institute; Finnish Environment Institute; Finnish Institute of Marine Research; Foreningen Nenningesund; Haninge Municipality; Holmen Papper Ab; Institute of Marine Research; Institute of Meteorology and Water Management National Research Institute, Poland; Latvian Institute of Aquatic Ecology; Leibniz Institute for Baltic Sea Research Warnemünde; Motala strom Coalition of Water Conservation; Norrtalje Kommun; Northwest Skane Coastal Comittee; Nynashamns Municipality; Oresund Water Conservation Association; SSAB; South Coast Water Conservation Association; State Agency for Environment, Nature and Geology, Mecklenburg-Vorpommern; State Agency for Nature and Environment of Schleswig Holstein; State Office for Agriculture, Environment and Rural Areas of Schleswig Holstein; Stockholm Marine Research Centre; Swedish Environmental Protection Agency; The Swedish Agency for Marine and Water Management; The Swedish Board of Fisheries
Publication Year 2024
OpenAccess true
Contact blue-cloud-support(at)maris.nl
Representation
Discipline Marine Science
Spatial Coverage (9.400W, 53.000S, 30.900E, 65.900N)
Temporal Coverage Begin 1974-08-19T00:00:00Z
Temporal Coverage End 2021-11-11T08:06:28Z