Taking into account Eq. (5), the melting temperatures of metals under high pressure can be evaluated. It is obviously that required input parameters to investigate melting temperature Tm as a function of pressure P are T0, B_0^T, βT and q. The values T0, B_0^T andβT can be gathered from experiments while the q parameter can be obtained by fitting the experimental data of high pressuredependent Grüneisen parameters to Eq. (4).