Fig. 4.
Model 4 parameter uncertainties. (A) Contours of the optimal RMSE for each value of TEP and TEB (i.e., the fit reflects an optimization over α, fT, and T100,warm for each TEB, TEP combination). The gradual slope of the contours across the upper left quadrant of the parameter space and extending into the upper right quadrant indicates weak constraints on TE values across this range. The star corresponds to the best fit in TEB, TEP space. The thick black contour corresponds to the 95% confidence interval on TEB, TEP. (B) As in A, but the optimal α value for each TEB, TEP combination is contoured instead of RMSE. Note the broad range of α values that fall within the 95% TEB, TEP confidence intervals and the strong negative correlation between TE values and α.