Figure 3
From: A simplified model to estimate nonlinear turbulent transport by linear dynamics in plasma turbulence

Comparison of the turbulent heat diffusivities between the nonlinear gyrokinetic simulation results \(\bar{\chi }_{\textrm{i}}/\chi _{\textrm{i}}^{\textrm{GB}}\) and the NFR–estimated \(\chi _{\textrm{i}}^{\textrm{NFR}}/{\chi _{\textrm{i}}^{\textrm{GB}}}\), where the datasets of \(\rho =0.5\), 0.6, 0.75 are used in the regression.