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.本数据集为针对2015年卡尔布科火山喷发事件的英国气象局数值大气扩散模拟环境（Numerical Atmospheric-dispersion Modelling Environment，缩写为NAME）伞状云（umbrella cloud）模拟数据集，所用模型版本为v8.1。该.zip文件内的每个子文件夹名称，代表对应模拟所采用的三项参数的取值（总计152组模拟）：烟柱侵入高度（z）、伞状云厚度（dz）与体积流量（Q）。子文件夹内的每个独立.txt文件，代表该文件夹名称所对应三项伞状云参数组合下，单次模拟中特定时间步的NAME输出结果（火山灰浓度）。本数据集仅模拟了本次火山喷发的第二阶段。