FIGURE 2.

The relation between hourly precipitation (p, in mm h⁻¹) and column water vapor (cwv, in mm) in the study area and period, according to ERA5 data. The black line gives the median (p ₅₀) and the shaded area the interquartile range (between p ₂₅ and p ₇₅). The relation is strongly nonlinear. To illustrate this, the black, long‐dashed line indicates that the precipitation at a cwv of 65 mm is equal to 1.5 mm h⁻¹. At 5 mm lower cwv (red, dash‐dotted line), precipitation is 0.4 mm h⁻¹, thus 1.1 mm h⁻¹ lower than at cwv = 65 mm; at 5 mm h⁻¹ higher cwv (blue, short‐dotted line), precipitation is 10.2 mm h⁻¹, thus 8.7 mm h⁻¹ higher than at cwv = 65 mm