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Relative distribution of nutrient concentration - Total Phosphorus (HOLAS 2)

Concentration of phosphorus pressure layer is interpolated from annual seasonal average of total phosphorus measurements from surface waters (0-10 m) extracted from ICES’s oceanographic database, database of Swedish Meteorological and Hydrological Institute, EEA’s Eionet database and Data from Gulf of Finland year 2014.


The points were interpolated to cover the entire Baltic Sea with Spline with barriers interpolation method. Values were log-transformed and normalised (more detailed description below).

Simple

Date (Creation)
2018-01-15
Unique resource identifier
https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/bbf73bb1-38b0-45af-928a-17635dbd8c51
pointOfContact
  HELCOM Secretariat

GEMET - INSPIRE themes, version 1.0

  • Bio-geographical regions

GEMET

  • phosphorus

  • environmental impact

Keywords
  • MADS

  • HOLAS2

Use constraints
Other restrictions
Other constraints

Use constraints: Data can be used freely given that the source is cited.

Access constraints
Other restrictions
Other constraints
Access constraints: No limitations on public access.
Spatial representation type
Grid
Metadata language
English
Topic category
  • Environment
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Begin date
2011-01-01
End date
2016-12-13
Unique resource identifier
EPSG:3035
Distribution format
  • TIFF ( )

OnLine resource
Download dataset ( WWW:LINK-1.0-http--link )
OnLine resource
Open in Map Viewer ( WWW:LINK-1.0-http--link )
Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Statement

Point wise concentration values (µmol / l) were aggregated to 5x5km grid and annual seasonal avergages (2011-2016) were calculated per grid cell (winter: december, january, february; spring: march, april, may; summer: june, july, august; autumn: september, october, november). Grid values were interpolated to 1x1km grid with "spline with barriers" method. A mild generalisation was applied for the layer.


All values above 95 percentile and under 5 percentile were grouped together to avoid over-influence of extreme values. Layer was log-transformed and normalised.


Data source:

ICES’s oceanographic database ( http://www.ices.dk/marine-data/data-portals/Pages/ocean.aspx), For Sweden: SMHI ( http://www.smhi.se/klimatdata/oceanografi/havsmiljodata/marina-miljoovervakningsdata), eionet ( https://www.eionet.europa.eu/), Gulf of Finland year 2014.


Data quality: Not known gaps


Attribute information: Pressure value


Spatial coverage: Entire Baltic Sea.


Spatial resolution: Original data as points, interpolated to 1 km x 1 km grid.

File identifier
bbf73bb1-38b0-45af-928a-17635dbd8c51 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2023-03-15T14:46:34
pointOfContact
  HELCOM Secretariat
 
 

Overviews

Spatial extent

N
S
E
W
thumbnail


Keywords

GEMET
environmental impact phosphorus
GEMET - INSPIRE themes, version 1.0
Bio-geographical regions

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