Figure 4: Mean equivalent potential temperature
(θe,shading), vertical velocity (contours) and mean wind
streamlines below 850 mb. Green contours denote downdrafts (below 600
mb) while red contours denote updrafts (above 600 mb). Left and right
columns show periods before and after intensification, respectively.
Insets show vertical wind shear between 850 and 200 mbar, maximum 10 m
wind speed [ms-1], and minimum sea-level pressure
[hPa].