Data release related to NAME umbrella cloud parameter sensitivity tests for the 2015 Calbuco volcanic eruption

Dataset of the Met Office Numerical Atmospheric-dispersion Modelling Environment (NAME) umbrella cloud simulations for the 2015 Calbuco volcanic eruption (model version v8.1). The name of each subfolder in the .zip file represents the values used for the three parameters considered in that simulation (152 simulations in total): plume intrusion height (z) umbrella cloud thickness (dz) volume flow rate (Q) Each individual .txt file within the subfolder represents the NAME output (volcanic ash concentration) for a specific time step for the simulation with the given combination of the three umbrella cloud parameters in the name of the folder. Only the second phase of the eruption is simulated.