Temperature (left panel, colorscale), vertical velocities (right panel, colorscale), and horizontal winds (arrows) in our model of HD 209458b. Positive velocities are upward. The top three panels show the flow at three different pressure (0.1 mbar, 1 mbar, and 10 mbar). The bottom panel shows the vertical velocities versus longitude and pressure along the equator. The substellar point is at longitude, latitude (0°, 0°), the dayside is between -90° and +90°. All the quantities are time averaged.