Investigation of causes of errors in numerical prediction to specify CO2 seepage information in the ocean

摘要

Carbon Capture and Storage (CCS) is one of the important solutions against the increase of CO2 emission in the world. Especially, technology of CO2 storage under the seafloor gathers attentions and is promoted to reach on practical stage until 2020 in Japan. In this study, we developed the estimation method to specify the leakage information such like location and time for leakage accident. Our method is derived from adjoint marginal sensitivity method. We conducted test calculation with the two type release situation (momentum and continuous release) and evaluated the error and factor.