The University of Colorado has a research group that has been working on evaluating the efficacy of cloud seeding to increase winter snowpack in mountains. Here

The University of Colorado has a research group that has been working on evaluating the efficacy of cloud seeding to increase winter snowpack in mountains. Here's one of their papers: https://www.pnas.org/doi/10.1073/pnas.1917204117 https://www.pnas.org/doi/10.1073/pnas.1917204117