BGS Hosted Metadata
Historic Standardised Streamflow Index (SSI) using Tweedie distribution with standard period 1961-2010 for 303 UK catchments (1891-2015)
This dataset contains the Standardised Streamflow Index (SSI) data for 303 catchments across the United Kingdom from 1891 to 2015. The SSI is a drought index based on the cumulative probability of a given monthly mean streamflow occurring for a given catchment. Here, the SSI is calculated for the following accumulation periods: 1, 3, 6, 9, 12, 18 and 24 months. Each accumulation period is calculated for calendar end-months. The standard period used to fit the Tweedie distribution is 1961-2010. The SSI was produced by the RCUK-funded Historic Droughts project in order to characterise and explore hydrological drought severity over the period 1891-2015. This dataset is an outcome of the Historic Droughts Project (grant number: NE/L01016X/1). Full details about this dataset can be found at https://doi.org/10.5285/58ef13a9-539f-46e5-88ad-c89274191ff9
Simple
- Date (Publication)
- 2018-03-12
- Date (Creation)
- 2017-03-01
- Citation identifier
- https://catalogue.ceh.ac.uk/id/58ef13a9-539f-46e5-88ad-c89274191ff9
- Citation identifier
- doi: / 10.5285/58ef13a9-539f-46e5-88ad-c89274191ff9
- Other citation details
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Barker, L.J., Smith, K.A., Svensson, C., Tanguy, M., Hannaford, J. (2018). Historic Standardised Streamflow Index (SSI) using Tweedie distribution with standard period 1961-2010 for 303 UK catchments (1891-2015). NERC Environmental Information Data Centre 10.5285/58ef13a9-539f-46e5-88ad-c89274191ff9
- Point of contact
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Organisation name Individual name Electronic mail address Role UK Centre for Ecology & Hydrology Barker, L.
Point of contact Centre for Ecology & Hydrology Barker, L.J. Author Centre for Ecology & Hydrology Smith, K.A. Author Centre for Ecology & Hydrology Svensson, C. Author Centre for Ecology & Hydrology Tanguy, M. Author Centre for Ecology & Hydrology Hannaford, J. Author NERC Environmental Information Data Centre Publisher NERC EDS Environmental Information Data Centre Custodian UK Centre for Ecology & Hydrology Owner
- Maintenance and update frequency
- Not planned
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GEMET - INSPIRE themes, version 1.0
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Hydrography
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- Access constraints
- Other restrictions
- Other constraints
- no limitations
- Use constraints
- Other restrictions
- Use constraints
- Other restrictions
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© UK Centre for Ecology & Hydrology
- Use constraints
- Other restrictions
- Other constraints
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If you reuse this data, you should cite: Barker, L.J., Smith, K.A., Svensson, C., Tanguy, M., Hannaford, J. (2018). Historic Standardised Streamflow Index (SSI) using Tweedie distribution with standard period 1961-2010 for 303 UK catchments (1891-2015). NERC Environmental Information Data Centre https://doi.org/10.5285/58ef13a9-539f-46e5-88ad-c89274191ff9
- Spatial representation type
- Text, table
- Language
- English
- Character set
- UTF8
- Topic category
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- Inland waters
- Environment
- Begin date
- 1891-01-01
- End date
- 2015-11-01
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- Unique resource identifier
- OSGB 1936 / British National Grid
- Distribution format
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Name Version Comma-separated values (CSV)
- Distributor contact
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Organisation name Individual name Electronic mail address Role NERC EDS Environmental Information Data Centre
Distributor
- OnLine resource
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Protocol Linkage Name https://catalogue.ceh.ac.uk/datastore/eidchub/58ef13a9-539f-46e5-88ad-c89274191ff9 Download the data
- OnLine resource
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Protocol Linkage Name https://data-package.ceh.ac.uk/sd/58ef13a9-539f-46e5-88ad-c89274191ff9.zip Supporting information
- Hierarchy level
- Dataset
- Other
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dataset
Conformance result
- Title
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Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
- Date (Publication)
- 2010-12-08
- Statement
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The SSI is calculated as defined in Svensson, et al., (2017 https://doi.org/ 10.1002/2016WR019276) and is based on the cumulative probability of a given monthly mean streamflow occurring for a given catchment. Here the SSI is calculated for the following accumulation periods: 1, 3, 6, 9, 12, 18 and 24 months. The Tweedie distribution was fitted to each accumulated time series of monthly mean flows. The 'SCI' package for R was used to calculate the SSI and a new function was written to enable the SCI package to call the 'tweedie' package for R. The input data used is monthly mean streamflow derived from modelled reconstructed streamflow (Smith et al., 2018 https://doi.org/10.5285/f710bed1-e564-47bf-b82c-4c2a2fe2810e). Data were exported in comma separated value files (.csv format) and ingested into the EIDC.
Metadata
- File identifier
- 58ef13a9-539f-46e5-88ad-c89274191ff9 XML
- Metadata language
- English
- Character set
- 8859 Part 1
- Hierarchy level
- Dataset
- Hierarchy level name
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dataset
- Date stamp
- 2025-03-21T13:35:37
- Metadata standard name
- UK GEMINI
- Metadata standard version
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2.3
- Metadata author
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Organisation name Individual name Electronic mail address Role NERC EDS Environmental Information Data Centre Point of contact
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