  The electromagnetic effect is studied on the short wavelength branch of the
ion temperature gradient mode in the linear regime for the first time using a
global gyrokinetic model. The short wavelength ion temperature gradient mode
growth rate is found to be reduced in the presence of electromagnetic
perturbations at finite plasma $\beta$. The effect on real frequency is found
to be weak. The threshold value of $\eta_i$ is found to increase for the mode
as the magnitude of $\beta$ is increased. The global mode structure of the
short wavelength branch of the ion temperature gradient mode is compared with
the conventional branch. The magnetic character of the mode, measured as the
ratio of mode average square values of electromagnetic potential to
electrostatic potential, is found to increase with increasing values of the
plasma $\beta$. The mixing length estimate for flux shows that the maximum
contribution still comes from the long wavelengths modes. The magnitude of the
flux decreases with increasing $\beta$.
