Development and Evaluation of a Hybrid Eulerian-Lagrangian Modeling Approach

Beata Czader1, Peter Percell1, Daewon Byun1 and Yunsoo Choi2, (1)University of Houston, Houston, TX, United States, (2)University of Houston, Department of Earth and Atmospheric Sciences, Houston, TX, United States
Abstract:
A hybrid Lagrangian-Eulerian modeling tool has been developed using the CMAQ code. It is a moving nest domain that resides in a base Eulerian model with the same vertical CMAQ structure and physical and chemical interactions. It may follow the trajectory defined by the mean mixed-layer wind or any other user defined trajectory. It was developed as a computationally efficient 3-D grid sub-model for the purpose of evaluations of the source-receptor relationship. The correctness of the algorithms and the overall performance was evaluated against CMAQ simulation results.