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The Morning NO<sub> x</sub> maximum in the forest atmosphere boundary layer

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Fig. 1. Diurnal variation of NO x from 24 June through 26 July 2008 at the PROPHET site and the morning NO x peak observation.
Fig. 2. Histogram of frequency of time of day for maximum NO x .
Fig. 3. Observed NO, NO 2 and ozone concentrations, and calculated steady-state NO, for 2 July 2008.
Fig. 4. Temperature Vertical Profiles above the Canopy for 24 July 2008.
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