26ce15dd-f994-40e0-8a09-5f257cc1f2ab
English
ISO/IEC 8859-1 (also known as Latin 1)
dataset
dataset
Environmental Information Data Centre
Lancaster Environment Centre, Library Avenue, Bailrigg
Lancaster
LA1 4AP
UK
info@eidc.ac.uk
pointOfContact
2022-07-11T08:32:59
UK GEMINI
2.3
OSGB 1936 / British National Grid
Peak flow and probability of exceedance data for Grid-to-Grid modelled widespread flooding events across mainland GB from 1980-2010 and 2050-2080
2022-06-27
publication
https://catalogue.ceh.ac.uk/id/26ce15dd-f994-40e0-8a09-5f257cc1f2ab
10.5285/26ce15dd-f994-40e0-8a09-5f257cc1f2ab
doi:
Griffin, A., Kay, A., Bell, V., Stewart, E.J., Sayer, P., Carr, S. (2022). Peak flow and probability of exceedance data for Grid-to-Grid modelled widespread flooding events across mainland GB from 1980-2010 and 2050-2080. NERC EDS Environmental Information Data Centre 10.5285/26ce15dd-f994-40e0-8a09-5f257cc1f2ab
This dataset is a set of 24 gridded netcdf files, each including data describing a total of 14,400 widespread flooding events across mainland GB, with event selection based on a peaks-over-threshold approach. The data describes peak river flow in m3/s and the associated annual probability of exceedance for each 1km grid-square on the GB river network. The data is extracted from daily time series data from the Grid-to-Grid model, using UKCP18 12km regional projections from 12 members of a perturbed parameter ensemble, over the periods Dec 1980 – Nov 2010 and Dec 2050 – Nov 2080 (based on 360-day years). Multi-day events were summarised by taking cell-wise flow maxima.
This data was generated for use in analysis of risk through catastrophe modelling using the Future Flows Explorer. It was generated and interpreted by UKCEH, working with Sayers & Partners Consultancy, as part of the AquaCAT project, part of the UK Climate Resilience Programme. Full details about this dataset can be found at https://doi.org/10.5285/26ce15dd-f994-40e0-8a09-5f257cc1f2ab
Dr Adam Griffin
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
pointOfContact
Griffin, A.
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
author
Kay, A.
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
author
Bell, V.
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
author
Stewart, E.J.
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
author
Sayer, P.
Sayers and Partners Consultancy
enquiries@ceh.ac.uk
author
Carr, S.
Sayers and Partners Consultancy
enquiries@ceh.ac.uk
author
NERC EDS Environmental Information Data Centre
enquiries@ceh.ac.uk
custodian
NERC EDS Environmental Information Data Centre
enquiries@ceh.ac.uk
publisher
UK Centre for Ecology & Hydrology
enquiries@ceh.ac.uk
owner
Sayers and Partners Consultancy
enquiries@ceh.ac.uk
owner
Environmental Monitoring Facilities
theme
GEMET - INSPIRE themes, version 1.0
2008-06-01
publication
Hydrology
Environmental risk
Flood frequency
otherRestrictions
no limitations
otherRestrictions
This resource is available under the terms of the Open Government Licence
otherRestrictions
If you reuse this data, you should cite: Griffin, A., Kay, A., Bell, V., Stewart, E.J., Sayer, P., Carr, S. (2022). Peak flow and probability of exceedance data for Grid-to-Grid modelled widespread flooding events across mainland GB from 1980-2010 and 2050-2080. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/26ce15dd-f994-40e0-8a09-5f257cc1f2ab
textTable
vector
1000
English
utf8
environment
1980-12-01
2080-11-30
-8.648
1.768
49.864
60.861
Comma-separated values (CSV)
Shapefile
NERC EDS Environmental Information Data Centre
info@eidc.ac.uk
distributor
https://data-package.ceh.ac.uk/data/26ce15dd-f994-40e0-8a09-5f257cc1f2ab
Download the data
Download a copy of this data
download
https://data-package.ceh.ac.uk/sd/26ce15dd-f994-40e0-8a09-5f257cc1f2ab.zip
Supporting information
Supporting information available to assist in re-use of this dataset
information
dataset
dataset
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
2010-12-08
Hydrological flow records were generated using Grid-to-Grid and UKCP18 12km regional projections. Widespread events were selected for which daily flow exceeded a 99.5% percentile simultaneously over at least 20km^2. Multi-day events (consecutive days for which the above conditions were met) are summarised by pointwise maxima of flow.
Probabilities of exceedance are computed pointwise using a mixed distribution, with an empirical distribution used for non-extreme values (below the 99.5% percentile) and a Generalised Pareto distribution used above, both fitted to the full time series of daily flow.