Titlebook: Atmospheric Measurements during POPCORN — Characterisation of the Photochemistry over a Rural Area; J. Rudolph,R. Koppmann Book 1998 Sprin

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POPCORN: A Field Study of Photochemistry in North-Eastern Germany,ldehyde, photolysis frequencies and vertical fluxes. OH radical concentrations were measured simultaneously by LIF (Laser Induced Fluorescence) and DOAS (Differential Optical Absorption Spectroscopy). Both methods showed good agreement. Maximum OH concentrations were around 10. cm. and the diurnal c

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,Measurements of Volatile Organic Compounds (VOC) During POPCORN 1994: Applying a New On-Line GC—MS-ted system. Internal standards were used to quantify the measurements. Ozone was destroyed prior to the sample preconcentration through the gas phase reaction with NO. Aromatic compounds like benzene, toluene and xylenes were the most abundant compound class among the measured substances, .-pinene a

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Mixing Ratios and Photostationary State of NO and NO2 Observed During the POPCORN Field Campaign ate local source, local dry deposition of NO., formation of NO. and N.O., and vertical exchange of air across the nocturnal inversion. During day-time, the local surface source of NO is not sufficient to explain the measured mixing ratios, and horizontal advection of NO. to the site must be included.

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Field Measurements of Atmospheric Photolysis Frequencies for O3, NO2, HCHO, CH3CHO, H2O2, and HONO angle with respective measured and modeled data from the literature also shows good agreement for most of the processes considered in this work. However, in the case of J(NO.) data reported in the literature as a function of solar zenith angle differences up to a factor of 1.6 with respect to this w

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Highly Time Resolved Measurements of OH during POPCORN Using Laser-Induced Fluorescence Spectroscopncluding diurnal cycles of OH with more than 300 data points. The OH as well as the LIF background signal data will be presented. In a first analysis the background signal will be characterized and the correlation between OH and the ozone photolysis frequency will be derived.

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