Unless we have a detailed understanding of the wind field over the Bay and the rainfall and evaporation distribution over the entire Peninsula, we will be unable to predict the physical effects of Restoration i.e., what parts of the Bay will be aff ected by altered water flows and what the resultant changes will be. Providing estimates of these critical parameters and how they will be locally and regionally altered by the major land use changes implicit in Restoration is the goal of the SFERPM Atmospheric Science projects.