The Center for Integrated Space Weather Modeling (CISM) The goal of the Center for Integrated Space Weather Modeling (CISM) is to build a physics-based model of space weather capable of forecasting what will occur in the space environment near Earth as a result of what happens on the Sun. Just as hurricanes, drought, or even a heavy snowfall will affect people’s economic well-being—or simply force changes in their daily routine – so unusual or extreme space weather, despite its seeming remoteness, can have a similar impact.