Hazard assessment for river flooding using river discharge statistics#
This workflow uses the dataset of hydrological climate impact indicators by SMHI that is available via the Copernicus Data Store. Based on this dataset, we can assess the projected changes in river discharges due to climate change, modelled using a European-wide hydrological model forced with climate models.
The dataset contains two types of model data: gridded data (E-HYPEgrid model) and catchment-level data (E-HYPEcatch model). In this workflow we will only use the catchment-level model data. The resolution of the catchment-level data is approx. 0.11 degrees (5-10 km).
The following variables are used in this workflow:
daily timeseries of river discharges for a historical period in order to assess the variation in discharge and compare to local observations.
monthly means of catchment-level river discharges to assess the seasonal changes in river discharges in the historical and future climates.
extreme river discharges for different return periods and their relative changes for different climate models, climate scenarios and timeframes (early-, mid- and end-century) to assess potential changes in flood hazard.
Relative change of extreme river discharges is available for 2, 5, 10, 50-year return periods and for the following timelines:
early century (2011-2040)
mid-century (2041-2070)
end-century (2071-2100)
For each time period, climate scenarios RCP2.6, RCP4.5 and RCP8.5 are available. Relative increases in flood recurrence for these periods are expressed relative to the reference period (1971-2000).
Structure of the workflow#
Note
This workflow currently assesses hazard only.