It is believed that ion temperature gradient (ITG) driven turbulence and the related zonal flow are responsible for ion transport in tokamak plasmas. Many studies have been done in the electrostatic limit, and the role of electromagnetic effects on the transport is one of the recent topics[1,2]. Here by extending the previous cylindrical code for drift-Alfven turbulence we have developed a global Landau-fluid code for electromagnetic turbulence in a tokamak plasma [3]. The code solves temporal evolution of five fields (density, vorticity, magnetic potential, ion parallel velocity and ion temperature). A preliminary simulation shows that in a finite beta tokamak plasma the toroidal ITG mode is linearly stabilized by increasing plasma beta, while the kinetic ballooning mode (KBM) becomes unstable [4]. Finite beta effect may play an important role on the zonal flow generation and then the transport. We will report the results of nonlinear simulation.

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