Ensemble forecasting is a method commonly used in weather forecasting and other fields to improve the accuracy and reliability of predictions. It involves running multiple computer models with slightly different initial conditions or parameters to create a range of possible outcomes. By combining these different models, ensemble forecasting can provide more accurate forecasts and also give an indication of the uncertainty or variability in the predicted outcomes. This approach helps forecasters to better understand the potential range of scenarios and make more informed decisions based on the likelihood of different outcomes.