Sensitivity analysis is a cornerstone of robust groundwater modeling, yet traditional "one-at-a-time" methods are often too computationally expensive for complex projects. To solve this, INTERA has developed Mf6Adj, an open-source tool designed to drastically streamline modeling workflows. By utilizing the adjoint solution (or influence function), Mf6Adj uses numerical linear algebra to simultaneously estimate sensitivity coefficients for a wide range of model inputs. The result? You can achieve the same insights as traditional methods but with only a single forward run. Because it leverages the MODFLOW 6 API, Mf6Adj integrates seamlessly without requiring any changes to the underlying code base. Join us as we explore the theory, implementation, and practical application of this powerful new tool for the groundwater community.
Watch this webinar to come away with:
Adjoint Theory Simplified: A high-level look at the math underlying the adjoint method and why it is more efficient than traditional evaluations.
The Mf6Adj Framework:
How INTERA developed this tool to work natively with the MODFLOW 6 API.
Practical Workflows: Step-by-step guidance on applying Mf6Adj to identify inputs that influence critical outcomes, such as surface-water/groundwater exchange.
Use-Case Demonstrations: Real-world examples of Mf6Adj applied to complex groundwater flow problems.
