Dependence of Computed Trajectory of Tropical Cyclones in the Northwest Pacific on the Parameterization of Physical Processes Based on the AHW Model

M. A. Novitskii, S. A. Petrichenko, and L. A. Tereb

Considered are different sets of parameterization schemes for the processes of energy ex¬change between the ocean and atmosphere in tropical cyclones (TCs), of boundary and surface TC lay¬ers, radiation fluxes, microphysics, and convection. Presented are the results of the research that studied how these schemes affect the goodness of fit between the model trajectories of concrete TCs in the Northwest Pacific and real data for different types of trajectories at the TC simulation by the AHW model. It is demonstrated that it is reasonable to use the Kain-Fritsch convection parameterization scheme for computing the movement of any TC in the Northwest Pacific. For TCs moving mainly in northern and northeastern directions, the specific set of parameterization schemes for physical pro¬cesses at the subgrid scale can be recommended most likely even at the presence of loop-like features in their trajectories.