Scalar contains the code used for studying iterative ensemble smoothers in a scalar case with large ensemble sizes. Results were published in
Geir Evensen, Analysis of iterative ensemble smoothers for solving inverse problems, Computational Geosciences, 2018, vol 22, issue 3, pp 885–908 https://link.springer.com/article/10.1007%2Fs10596-018-9731-y
Geir Evensen, Introducing Stochastic Model Errors In Ensemble-Based History Matching, Computational Geosciences, 2019 https://link.springer.com/article/10.1007%2Fs10596-019-9819-z
Evensen, G., P. Raanes, A. Stordal, and J. Hove, Efficient implementation of an iterative ensemble smoother for data assimilation and reservoir history matching, Frontiers in Applied Mathematics and Statistics, 2019, https://doi.org/10.3389/fams.2019.00047
Raanes, P. N., A. S. Stordal, and G. Evensen, Revising the stochastic iterative ensemble smoother, Nonlin. Processes Geophys, 26, 325–338, 2019. https://www.nonlin-processes-geophys.net/26/325/2019/