CO-Benefits Risk Assessment Health Impacts Screening and Mapping Tool (COBRA)

New! COBRA Desktop and Web Edition 5.0.

COBRA Desktop Edition and Web Edition can now evaluate the health impacts of ozone (O₃) formation, in addition to particulate matter (PM_2.5), due to changes in the air pollutants assessed by the model.
Develop Your Inputs for COBRA

Use these factsheets to estimate emissions inputs for COBRA analyses.
COBRA in Action

COBRA has been featured in more than 150 studies and analyses by government agencies, industry experts, academic researchers, and other organizations. See examples of how others have used COBRA.