Tuesday, May 30
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TOPAZ data were taken from 11:28 - 19:20 PDT. Laser maintenance in the morning and around midday. TOPAZ performance was not optimal during the late AM data segment. Hot (38 C max), light winds early, increasing in the afternoon. Thick Cirrus shield associated with the West Coast trough. The BL rose to about 4 km AGL in the afternoon, just to the bottom of the high ozone layer (80-90 ppbv). Contrary to the day before, the high ozone aloft was not entrained into the BL.