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
dataset
https://catalogue.ceh.ac.uk/datastore/eidchub/58ef13a9-539f-46e5-88ad-c89274191ff9
name: Download the data
description: Download a copy of this data
function: download
https://data-package.ceh.ac.uk/sd/58ef13a9-539f-46e5-88ad-c89274191ff9.zip
name: Supporting information
description: Supporting information available to assist in re-use of this dataset
function: information
https://catalogue.ceh.ac.uk/id/58ef13a9-539f-46e5-88ad-c89274191ff9
doi:
eng
inlandWaters
environment
Hydrography
publication
2008-06-01
creation
2006-01-01
Historic Droughts
Drought
Water Scarcity
Drought Inventory
Drought Catalogue
Drought Indicator
SSI
Standardised Streamflow Index
Catchment
-8.648
1.768
60.861
49.864
1891-01-01
2015-11-01
publication
2018-03-12
creation
2017-03-01
notPlanned
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.
publication
2010-12-08
Comma-separated values (CSV)
© UK Centre for Ecology & Hydrology
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
UK Centre for Ecology & Hydrology
pointOfContact
Centre for Ecology & Hydrology
author
Centre for Ecology & Hydrology
author
Centre for Ecology & Hydrology
author
Centre for Ecology & Hydrology
author
Centre for Ecology & Hydrology
author
NERC Environmental Information Data Centre
publisher
NERC EDS Environmental Information Data Centre
custodian
UK Centre for Ecology & Hydrology
owner
Environmental Information Data Centre
Lancaster Environment Centre, Library Avenue, Bailrigg
Lancaster
LA1 4AP
UK
pointOfContact
2022-11-03T15:53:09