Dr. Frolov is a data assimilation and coupled model forecasting expert with strong track record of formulating and implementing advance computing algorithms that drive Earth Science modeling and observation workflows. Past contributions include scientific support for negotiation of the US-Canada water sharing treaty; design of the US strategy for harmful algal bloom observations; implementation of the coupled data assimilation and coupled ensemble forecast component of the Navy’s S2S forecast model. Dr. Frolov’s present focus is on the development of the coupled reanalysis with the NOAA’s Unified Forecast System and on the development of the NOAA-native AI models for Earth system prediction.