RunMACRO: A program to facilitate sensitivity analyses using the water flow and solute movement model MACRO

Sensitivity analyses of pesticide leaching often involve a large range of simulations based on nearly identical set-ups. Using RunMACRO it is possible to make large numbers of simulations with a minimum of exertion. Running many nearly identical model set-ups is tedious and might introduce errors in selecting the correct values from a long range of parameter files that are appropriate to the model set-up. RunMACRO makes the task easier and minimises the risk of errors in the generation of parameter files and model executions. Using RunMACRO, it is possible to create a suite of MACRO simulations based on a single parameter file where the range or a list of values for one to three parameters is specified. RunMACRO then creates a parameter file for each of the simulations and runs the simulations one by one. RunMACRO can easily be modified to be used with other simulation programs that use ASCII-based parameter files and can be started from a command prompt. RunMACRO is available free to use and modify from the Geological Survey of Denmark and Greenland's home page.