References Accompanying figure , Description of INIT1 in Ch. Goal Survey the structure and variability across two intersecting boundaries. The P-3 will execute a vertical step pattern approximately 50 km east of the dryline to sample the conditions along one of the boundaries. Goal Document wind shear and airmass differences across boundary where convection is predicted to develop. Sequence P-3 and Electra are vectored to boundary and location of predicted convective development.
Aircraft then fly box pattern at one-half cloud base height.
Height One-half observed cloud base height. Time Required 20-25 minutes per box References Description of INIT3 in Ch. Goal Gather airborne Doppler radar data to deduce the 3-dimensional airflow during evolution of tornadic supercells. Time Required 5 minutes to complete one pass. It may be deemed necessary, so as to further increase along-track scanning resolution, to execute only fore scans approaching the cell of interest, then all aft scans after passing the cell.