Zhiqiang Liu

Zhiqiang Liu is a Ph.D. student at the Institute of Atmospheric Physics (IAP). He developed COLA and COLA-urban CO2 data assimilation systems from the global to city scale using GEOS-Chem and WRF, respectively. These systems involve several novel techniques for ensemble-type CO2 inversion, such as the Constrained Ensemble Kalman Filter (CEnKF) and assimilation a priori as unique observation (AAPO). The system is computationally efficient and less dependent on the a priori estimation.