PROJECT SUMMARY This project will measure the vulnerability and resilience of household food security to climate shocks in Nigeria, Ethiopia, Tanzania and Malawi. We will link longitudinal data on food security from approximately 4000 households per country, observed at 3-4 time points, to newly-available, very-high-resolution data on climate exposures. We will then use these data to investigate household vulnerability and resilience to climate shocks by examining both immediate and medium-term effects of climate anomalies on multiple measures of food security across various subpopulations. This research will represent the first multi-country investigation of vulnerability and resilience of food security to climate shocks, focusing on four countries where these concerns are paramount.