Date of Original Version
The interaction of binary tropical cyclones (TC) is investigated using a coupled TC-ocean movable nested-grid model. The model consists of an eight-layer atmospheric model in the sigma coordinate system and a three-layer primitive equation ocean model. There are five meshes in the TC model. The outermost domain (3840 km × 3840 km) is motionless. For the description of each TC in a TC pair, two telescopically nested meshes of finer resolution are used. The pair of the middle (1600 km × 1600 km) and innermost (800 km × 800 km) meshes move with the center of a corresponding TC. The space increments of the outermost domain and the middle and finest meshes are 160, 80, and 40 km. The oceanic domain contains 107 × 107 grid points, with the spatial increment of 40 km. In all numerical experiments a pair of equal strength axisymmetric vortices was located at different separation distances.
Falkovich, A.I., A.P. Khain, and I. Ginis, 1995: Motion and Evolution of Binary Tropical Cyclones in a Coupled Atmosphere–Ocean Numerical Model. Mon. Wea. Rev., 123, 1345–1363, doi: 10.1175/1520-0493(1995)123<1345:MAEOBT>2.0.CO;2.