DISCOVER-AQ Houston TOPAZ Data
September 26, 2013
September 26. Thursday.
TOPAZ data were collected from about 0750 to 1800 CDT. Shallow fog layer early in the morning. Otherwise clear skies all day, except for a few shallow Cu clouds in the afternoon. Calm in the morning, then light winds out of the south, strengthening and switching to a SEerly direction from midday on. Low surface O3 early, increasing steadily to about 75 ppbv by 1100 CDT. O3 was well mixed and held steady in the 70s ppbv throughout the afternoon.
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