September 22. Sunday.
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TOPAZ data were collected from about 1037 to 1702 CDT. No flights.  NE winds and partly cloudy all day with cirrus and fast moving low clouds most of the morning. The data plot below has many cloud artifacts. Low surface O3 (about 12 ppbv) early, increasing to 32 ppbv in the afternoon. Winds remained northeasterly with no Gulf breeze during the measurements.
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Note: Biases due to clouds have not yet been fully corrected.