Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS
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Identification info
- Metadata Language
- English (en)
- Character set
- utf8
- Dataset Reference Date ()
- 2017-02-23
- Dataset Reference Date ()
- 2014-11-30
- Identifier
- doi: / 10.5285/8c5d9e38-0244-4a39-8600-a85513a6fecf
- Other citation details
- Daldorph, P. (2017). Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS. NERC Environmental Information Data Centre 10.5285/8c5d9e38-0244-4a39-8600-a85513a6fecf
- Maintenance and update frequency
- notPlanned
- GEMET - INSPIRE themes, version 1.0 ()
-
- Environmental Monitoring Facilities
- Limitations on Public Access
- otherRestrictions
- Other constraints
- Registration is required to access this data
- Use constraints
- otherRestrictions
- Other constraints
- Licence terms and conditions apply
- Use constraints
- otherRestrictions
- Other constraints
- The following copyright notice should be placed on all copies of information or images derived from this dataset: 'Based upon [insert dataset name] © Copyright and Database right UKWIR.'
- Use constraints
- otherRestrictions
- Other constraints
- If you reuse this data, you should cite: Daldorph, P. (2017). Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS. NERC Environmental Information Data Centre https://doi.org/10.5285/8c5d9e38-0244-4a39-8600-a85513a6fecf
- Spatial representation type
- vector
- Distance
- 1000 urn:ogc:def:uom:EPSG::9001
- Topic category
-
- Environment
- Begin date
- 2006-01-01
- End date
- 2009-12-31
Distribution Information
- Data format
-
-
ESRI shapefile
()
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ESRI shapefile
()
- Resource Locator
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Supporting information
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Supporting information
Supporting information available to assist in re-use of this dataset
- Quality Scope
- dataset
- Other
- dataset
Report
- Dataset Reference Date ()
- 2010-12-08
- Statement
- This dataset has been modelled with The Source Apportionment-GIS (SAGIS) using data from the period spanning from 2006 to 2009. Input datasets include: river network outline, water body boundary, hydrology and river monitoring data, rainfall, land use and agricultural data, on-site wastewater treatment system, sewage treatment works, combined sewer overflows and storm tank locations, soil erosion, highway runoff and pollution inventory industrial discharges to river and sewer including extensive sewage treatment works data. Loads are converted to concentrations in river waters using the SIMulation of CATchments (SIMCAT) water quality model, which is incorporated within SAGIS, so that the contribution to in-stream concentrations from individual sources can be quantified. Diffuse sources of nutrient pollution are incorporated into SAGIS from the Phosphorus and Sediment Yield Characterisation In Catchments (PSYCHIC) model (developed by a consortium of academic and government organisations led by ADAS Water Quality). SAGIS models are not time based and do not show seasonal variation; river flow can vary according to seasonal changes which would have an impact on results. The model will also always be a simplified version of reality and so must be used as an advisory tool and not as the sole basis of decisions. Data is often subject to change and so the models require regular updates. Livestock and arable inputs have been calculated from the ADAS models PSYCHIC and NEAPN and have been shown to overestimate inputs in some areas. There is also a related issue, of changing crop types and land use.
Metadata
- File identifier
- 8c5d9e38-0244-4a39-8600-a85513a6fecf XML
- Metadata Language
- English (en)
- Character set
- ISO/IEC 8859-1 (also known as Latin 1)
- Resource type
- dataset
- Hierarchy level name
- dataset
- Metadata Date
- 2024-03-01T11:52:21
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3