On the Origin of the Air between Multiple Tropopauses at Midlatitudes
Figure 2
Specific humidity averaged for the ten days before time t0 (color scale). In the upper panel (latitude-longitude representation) the black square on the right-hand side represents the region near Boulder where particles arrive at t0. In the lower panels (height-longitude representation), the rectangle represents a boundary of 5 degrees of longitude surrounding the station at Boulder. The dotted black lines show the average heights of the first and second tropopauses.
