Barker, L.J.; Smith, K.A.; Svensson, C.; Tanguy, M.; Hannaford, J.

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).

Publication date: 2018-03-12

Get the data

This dataset is made available under the terms of the Open Government Licence

Format of the data: Comma-separated values (CSV)

You must 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

 

© UK Centre for Ecology & Hydrology

Where/When

Study area
Temporal extent
1891-01-01    to    2015-11-01

Provenance & quality

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.

Related

This dataset is included in the following collections

Historic droughts: hydro-meteorological data outputs

Citations

West, H., Quinn, N., & Horswell, M. (2022). Spatio-temporal propagation of North Atlantic Oscillation (NAO) rainfall deviations to streamflow in British catchments. In Hydrological Sciences Journal (Vol. 67, Issue 5, pp. 676–688). Informa UK Limited https://doi.org/10.1080/02626667.2022.2038791

Correspondence/contact details

Lucy Barker
UK Centre for Ecology & Hydrology
Maclean Building, Benson Lane, Crowmarsh Gifford
Wallingford
Oxfordshire
OX10 8BB
UNITED KINGDOM
 enquiries@ceh.ac.uk

Authors

Barker, L.J.
Centre for Ecology & Hydrology
Smith, K.A.
Centre for Ecology & Hydrology
Svensson, C.
Centre for Ecology & Hydrology
Tanguy, M.
Centre for Ecology & Hydrology
Hannaford, J.
Centre for Ecology & Hydrology

Other contacts

Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC Environmental Information Data Centre
 info@eidc.ac.uk
Rights Holder
UK Centre for Ecology & Hydrology
 enquiries@ceh.ac.uk

Additional metadata

Topic categories
Inland Waters , Environment
Keywords
Catchment,  Drought,  Drought Catalogue,  Drought Indicator,  Drought Inventory,  Historic Droughts,  SSI,  Standardised Streamflow Index,  United Kingdom Water Scarcity
INSPIRE Theme
Hydrography
Funding
Natural Environment Research Council Award: NE/L01016X/1
Spatial representation type
Tabular (text)
Spatial reference system
OSGB 1936 / British National Grid
Last updated
07 July 2022 12:31