HELCOM Metadata catalogue
Total nitrogen 2018 (HOLAS 2)
This indicator evaluates the eutrophication status of the Baltic Sea area based on annual total nitrogen concentration. The measured average total nitrogen is derived from in-situ measurements from oceanographic monitoring data for 2011-2016 (µmol/l), surface water (0-10 m). More detailed description on methodology can be found at http://www.helcom.fi/baltic-sea-trends/indicators/total-nitrogen-(tn)/ 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). The open sea areas have been assessed based on HELCOM Monitoring data and results for coastal areas are based on national WFD results. Some of the open sea areas have not been assessed due to lack of commonly agreed threshold value.
Attribute information:
“HELCOM_ID” = Code of the HELCOM scale 4 assessment unit
"Country" = Country/ Opensea
"level_2" = Name of the HELCOM scale 2 assessment unit
"Name" = Name of the HELCOM scale 4 assessment unit”
"Area (km2)" = Area of the HELCOM scale 2 assessment unit
"Indicator" = Name of indicator
“Season” = Season of the indicator
“Period” = Assessment unit period (20112016 = 2011 – 2016)
"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 per assessment unit
"Thershold value (ET)" = Commonly agreed thershold 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 (“Good”, “Not good”, “Not assessed” or "Not applicable")
“Confidence” = Confidence of result based on I-SCORE (“High”, “Moderate” or “Low”)
"AULEVEL" = Assessment unit level used for the indicator
"ET_wint" = Commonly agreed thershold value in winter
"ER_winter" = Ratio between ES and ET (in case of indicator with positive response to eutrophication) in winter
"Winter status" = Status of the indicator (“Achieve”, “Fail” or “Not assessed”) in winter
Simple
- Date (Publication)
- 2018-06-28
- Unique resource identifier
- https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/0451441e-b1b7-40ab-8cbd-25b629885dec
-
GEMET - INSPIRE themes, version 1.0
-
-
Oceanographic geographical features
-
- Keywords
-
-
MADS
-
HOLAS2 2018 Core indicator
-
Core indicator
-
- Use constraints
- Other restrictions
- Other constraints
-
Use constraints: Data can be used freely given that the source (HELCOM) is cited.
- Access constraints
- Other restrictions
- Other constraints
- Access constraints: No limitations on public access.
- Spatial representation type
- Vector
- Metadata language
- English
- Topic category
-
- Environment
))
- Begin date
- 2011-01-01
- End date
- 2016-12-31
- Unique resource identifier
- EPSG:3035
- Distribution format
-
-
ESRI Shapefile
(
1.0
)
-
ESRI Shapefile
(
1.0
)
- 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
-
The dataset was created in June 2018.
Data source: The average for 2011-2016 was estimated using monitoring data provided by the HELCOM Contracting Parties, and kept in the HELCOM COMBINE database, hosted by ICES (www.ices.dk). Nominated members of HELCOM STATE & CONSERVATION group were given the opportunity to review the data, and to supply any missing monitoring observations, in order to achieve a complete dataset.
Description of data: The data includes total nitrogen observations, determined as explained in the HELCOM COMBINE manual. Measurements made at the depth of 0 – 10 m from the surface were used in the assessment.
Temporal coverage: The raw data includes observations throughout the year, during the assessment period 2011-2016. For the summer average, observations taken during June-September were included only.
Data aggregation: The 2011-2016 averages for each sub-basin were produced as an inter-annual estimates using observations from all months / June-September.
Additional information:
http://www.helcom.fi/baltic-sea-trends/indicators/total-nitrogen-(tn)/
- File identifier
- 0451441e-b1b7-40ab-8cbd-25b629885dec XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2023-03-19T03:20:07
Overviews
Spatial extent
Provided by
