An approximate east-west cross section at 2205:39 UTC 6 May 1995 revealing the vertical structure of the dryline interface. Radar reflectivity and Doppler velocity are shown on the top and bottom of the figure, respectively. Range rings and azimuths are every 5 km and 30 degrees, respectively. Schematic diagram of the flow patterns is shown in the middle of the figure. Dashed line marks kinematic boundary between the two air masses.

These figures tell us that the dry and hot air is accelerating upward and rearward over the warm and moist air which is moving away from the aircraft; these observations are strongly suggestive of a density current structure of the dryline.



An approximate east-west cross section at 2213:38 UTC 6 May 1995 revealing the vertical structure of the dryline and dry convective plumes. Radar reflectivity and Doppler velocity are shown on the top and bottom of the figure, respectively. White arrow denotes convergence at the surface location of the dryline. Surface convergence associated with one of the convective plumes is shown by the black arrow. Range rings and azimuths are every 5 km and 30 degrees, respectively. Schematic diagram of the flow patterns is shown in the middle of the figure. The gray shading in the schematic represents reflectivity greater than 10 dBZ. Dashed line marks kinematic boundary between the two air masses.

The most striking features in the above figure are the dry convective plumes which have developed within the Convective Boundary Layer(CBL). These radar images may be one of the most important data sets collected during VORTEX95 since it illustrates the ELDORA could contribute significantly toward studies of the large eddy scale structure of the boundary layer.