Friday, May 26
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TOPAZ data were taken from 09:23 - 18:51 PDT. The TOPAZ laser needed to be realigned, hence the data gap between 11:00 and 14:40 PDT. Seasonal temps (33 C max). Winds from the SW. Breezy overnight and in the early evening. Surface ozone stayed elevated (40-55 ppbv) overnight, increased to about 65 ppbv around midday, and then stayed level at about 60 ppbv into the night. In the afternoon, ozone was well mixed up to 3 km AGL. High ozone (80-90 ppbv) was observed above 6 km AGL.