Rate factor (ice) কী?

The rate factor $A(T)$ of Glen’s law, also called the softness of the ice, is written $A = A_0\exp(-Q/RT)$, with an activation energy $Q$. A widely used fit (Paterson and Budd) takes $A_0 = 3.61 \times 10^{-13}\,\mathrm{s}^{-1}\,\mathrm{Pa}^{-3}$ and $Q = 60\,\mathrm{kJ}/\mathrm{mol}$ below $-10\,{}^{\circ}\mathrm{C}$, and $A_0 = 1.73 \times 10^{3}\,\mathrm{s}^{-1}\,\mathrm{Pa}^{-3}$ and $Q = 139\,\mathrm{kJ}/\mathrm{mol}$ above it, closer to the melting point, where the ice softens faster with temperature.