2 citations · 3 across the 3 of their papers we have counts for
3 papers
Model Error Covariance Estimation for Weak Constraint Data Assimilation
Sandra R. Babyale, Jodi Mead, Donna Calhoun +1
State estimates from weak constraint 4D-Var data assimilation can vary significantly depending on the data and model error covariances. As a result, the accuracy of these estimates…
A Fast Direct Solver for Elliptic PDEs on a Hierarchy of Adaptively Refined Quadtrees
Damyn Chipman, Donna Calhoun, Carsten Burstedde
We describe a fast, direct solver for elliptic partial differential equations on a two-dimensional hierarchy of adaptively refined, Cartesian meshes. Our solver, inspired by the Hi…
Simulating the 1976 Teton Dam Failure using Geoclaw and HEC-RAS and comparing with Historical Observations
Hannah Spero, Donna Calhoun, Michael Schubert
Dam failures occur worldwide, often from factors including aging structures, extreme hydrologic loading, and design oversights related to the changing climate. Understanding and mi…