CoSMoS-AK Modeled flood and erosion hazards at Golovin- Coastal Alaska

This data release consists of flood hazard maps from compound coastal hazards--specifically sea-level rise (SLR) and projected coastal storms. Products include projected flood depths, flood extents including uncertainties, water elevations, wave heights, velocity hazard, and erosion and sedimentation pattern. These are generated using a suite of numerical models driven by outputs from Global Climate Models (GCMs) included in the Coupled Model Intercomparison Project Phase 6 (CMIP6; Haarsma and others, 2016). The resulting data include gridded maps and shapefiles that reflect projected coastal hazards due to sea level rise (SLR) and plausible future storm scenarios. These scenarios account for changes in storm behavior, reductions in sea ice cover, and natural variability. Flood simulations incorporate dynamic contributions from tides, storm surge, waves, and seasonal sea-level fluctuations--providing a comprehensive view of potential future flooding. Outputs cover six SLR scenarios (0, 0.5, 1.0, 1.5, 2.0, and 3.0 meters) combined with five storm return periods (1-year, 10-year, 20-year, 50-year, and 100-year events), along with a background condition representing no storm (only astronomical tides and average atmospheric conditions). Additionally, this data release includes the XBeach model used for Golovin, Alaska.