Sensitivity of AMM15-surge to varying tidal boundary conditions and bottom friction coefficients

Operational storm surge forecasting at the Met Office is undergoing transition from the model code developed by the National Oceanography Centre (NOC) to new configurations based on a depth-averaged configuration of the NEMO ocean model (Madec et al., 1998; Madec et al., 2014). The legacy configurations of CS3X (e.g. Horsburgh et al., 2008; Flowerdew et al., 2010) will continue to run in deterministic and ensemble modes during 2019/2020 but will be retired shortly thereafter once the NEMO suite can supply all operational products to the UK stakeholders.