HELCOM Metadata catalogue
PLC Assessment data 1995-2022
The data set includes the water flow and nutrient inputs (total nitrogen and phosphorous) of monitored river catchments and unmonitored areas as well as the nutrient inputs from point sources (municipal, industrial and aquaculture) that are directly discharging into the sea. The water flow and nutrient input data is available as actual (non-normalized) and flow normalized.
The data covers the whole Baltic Sea drainage area and the years 1995-2022. Together the riverine and point source inputs provide the total land-based load of nutrients into the Baltic Sea. The data consists of several excel spreadsheets providing background info and actual load values. The spatial delineation of these catchments can be accessed through the metadata record for PLC Assessment data river catchments ( https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/d7b5404a-b3e1-4fe6-be35-a12055736783). The tabular and the spatial data includes the catchments that have a full time series of data for 1995-2022, and the nutrient load of rivers with incomplete time series are added to the adjacent unmonitored areas.
The non-normalized data is used in the HELCOM Baltic Sea Environmental Fact Sheet (BSEFS) on Waterborne nitrogen and phosphorus inputs and water flow to the Baltic Sea that is published annually ( https://helcom.fi/baltic-sea-trends/environment-fact-sheets/eutrophication/). The normalized data is used for the inputs of nutrients core indicator ( https://indicators.helcom.fi/indicator/inputs-of-nutrients/) as well as the NIC assessment ( https://helcom.fi/baltic-sea-action-plan/nutrient-reduction-scheme/national-nutrient-input-ceilings/).
The assessment data set is based on the reporting by HELCOM Contracting Parties within the Pollution Load Compilation framework (PLC). The assessment dataset is produced by the Baltic Nest Institute (BNI), Stockholm University together with the Danish Centre for Environment and Energy (DCE), Aarhus University from the original reported data. For a more detailed description of the spreadsheets and included data, please scroll down to lineage.
Simple
- Date (Revision)
- 2024-12-17T10:18:00
- Unique resource identifier
- https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/441f878f-67e7-4aa8-927e-8f5e073dc893
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GEMET - INSPIRE themes, version 1.0
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Environmental monitoring facilities
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GEMET
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pollution monitoring
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river water
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hazardous substance
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nutrient
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river pollution
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direct discharger
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waste water discharge
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indirect discharger
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- Keywords
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- Access constraints
- Other restrictions
- Other constraints
- Access constraints: No limitations on public access.
- Use constraints
- Other restrictions
- Other constraints
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Use constraints: Data can be used freely given that the source (HELCOM) is cited.
- Spatial representation type
- Text, table
- Metadata language
- English
- Topic category
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- Environment
- Begin date
- 1995-01-01 Unknown
- End date
- 2022-12-31 Now
- Distribution format
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XLSX
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XLSX
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- OnLine resource
- AssessmentDataSet1995_2022 ( WWW:DOWNLOAD-1.0-http--download )
- Hierarchy level
- Non geographic dataset
Conformance result
- Date (Publication)
- 2010-12-08
- Statement
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List of spreadsheets included in the dataset and a short description of the content are given below.
DataDescription
Gives a brief description of the data including the units of the values.
AggregationsOfIncompleteRiverTi
Provides the list of catchments with incomplete time series and to which unmonitored areas these catchments are aggregated.
UnmonitoredAreasMergedInMonitor
Provides a list of river specific unmonitored catchments and to which catchments these are merged.
OriginalRivers_Flow, TN and TP
Original time series of flow and nutrient data for monitored catchments without merging the catcments as described in two previous spreadsheets.
OriginalUnmonitored_Flow, TN and TP
Original time series of flow and nutrient data for unmonitored catchments without merging the catcments as described in two previous spreadsheets.
Rivers_Flow, TN and TP
The main assessment data set, including full time series of flow and actual (non-normalized) TN and TP load data for monitored rivers and unmonitored areas.
Rivers_NormTN and TP
The same data set as above, but with flow normalized nutrient values.
Industry, Aquaculture and Municipal, TN and TP
Includes the nutrient load values for the point sources that discharge directly to the sea.
Please note that originally there have been gaps in the time series of national inputs in the PLC water database. Therefore, DCE and BNI amended the dataset filling in missing and correcting suspicious data to establish an assessment dataset which then was checked and approved to used in different PLC assessments. A description of the methods used to fill data gaps in is given in chapter 1.2 in BSEP 141 (HELCOM, 2013d): https://www.helcom.fi/wp-content/uploads/2019/08/BSEP141.pdf
All data have been compiled in accordance with PLC guidelines that also includes additional information for example on data collection, normalisation methodologies, sampling and quality assurance ( https://helcom.fi/wp-content/uploads/2022/04/HELCOM-PLC-Water-Guidelines-2022.pdf).
- File identifier
- 441f878f-67e7-4aa8-927e-8f5e073dc893 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2024-12-17T14:38:36
