Sunday, June 25
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TOPAZ data were recorded from 09:36 - 18:56 PDT. Another extremely hot day (max. of 45 C at the lidar site) and 111 F at the NLVA NWS tower. Scattered high clouds in the morning, followed by mostly clear skies in the afternoon. Calm or very light winds all day. Very similar to yesterday with modest ozone production and peak concentrations of about 70 ppbv. The mixed layer grew to more than 4 km around 1500 PDT, which helped to dilute the ozone concentrations. This Friday-Saturday-Sunday combination will be a good candidate for a modeling study.