Question

The question is: In a model ensemble system, what do meteorologists change each time they run a simulation of the same model?



the mathematical equations used
the predicted forecast
the initial conditions
the range of possible outcomes

Answer 1

In a model ensemble system, meteorologists change **the initial conditions** each time they run a simulation of the same model. This is done to account for uncertainties and to explore a range of possible outcomes based on slight variations in the starting state of the atmosphere. By varying the initial conditions, meteorologists can generate multiple forecasts that provide a better understanding of the potential range of weather scenarios.