Figure 3. Sensitivity to input variables. Winter classification ANN accuracy predicting active MJO days at leads of 0, 5, and 10 days given different input variables. 1-variable (panel a), 2-variable (panel b), and 3-variable (panel c) models are shown. For each model, 5 ANNs are trained with different initial random weights (error lines). The legend short-hand refers to zonal wind (u), total column water vapor (tcw), specific humidity (q), temperature (t), and meridional wind (v), with numbers indicating the pressure level where relevant.