At the Climate Modeling Alliance, or CliMA for short, a consortium of scientists and engineers from Caltech, JPL, MIT, and the Naval Postgraduate School are building a new climate model from the ground up. They’re fusing Earth observations and high-resolution simulations into a model that will capture important small-scale features, such as clouds and ocean turbulence, better than current models. The goal is a model that projects future climate change with uncertainties at least two times smaller than existing models.