Articles | Volume 25, issue 7
Hydrol. Earth Syst. Sci., 25, 4159–4183, 2021
https://doi.org/10.5194/hess-25-4159-2021
Hydrol. Earth Syst. Sci., 25, 4159–4183, 2021
https://doi.org/10.5194/hess-25-4159-2021

Research article 22 Jul 2021

Research article | 22 Jul 2021

Conditioning ensemble streamflow prediction with the North Atlantic Oscillation improves skill at longer lead times

Seán Donegan et al.

Data sets

Hydro-Data Office of Public Works https://waterlevel.ie/hydro-data/

HydroNet Environmental Protection Agency https://epawebapp.epa.ie/hydronet/

Download
Short summary
We benchmarked the skill of ensemble streamflow prediction (ESP) for a diverse sample of 46 Irish catchments. We found that ESP is skilful in the majority of catchments up to several months ahead. However, the level of skill was strongly dependent on lead time, initialisation month, and individual catchment location and storage properties. We also conditioned ESP with the winter North Atlantic Oscillation and show that improvements in forecast skill, reliability, and discrimination are possible.