Get Atmospheric Measurements during POPCORN — Characterisation PDF

By Christian Plass-Dülmer, Theo Brauers (auth.), J. Rudolph, R. Koppmann (eds.)

ISBN-10: 9048151589

ISBN-13: 9789048151585

ISBN-10: 9401708134

ISBN-13: 9789401708135

Present coverage concerns obstacle the aid of ozone degrees by way of controlling its precursors, NOx and unstable natural compounds (VOC). VOC are emitted from anthropogenic and biogenic resources. while our realizing of VOC emissions from anthropogenic assets has complicated considerably lately, there's nonetheless a scarcity of data about the contribution of biogenic VOC to the funds of natural hint gases and their effect at the formation of ozone within the troposphere. enhancing ozone aid suggestions sooner or later calls for an in depth realizing of the chemical tactics within the troposphere.
This publication contains the result of atmospheric measurements received throughout the box crusade POPCORN (Photo-Oxidant Formation through Plant Emitted Compounds and OH Radicals in North-Eastern Germany) which was once performed to enquire the function and influence of biogenic hint gases on tropospheric chemistry. This quantity describes meteorological occasions and origins of air lots in the course of the crusade, and offers measurements of a number of hint gases, sunlight radiation and photolysis frequencies. distinctive consciousness is given to OH radical measurements and the in-situ comparability of the 2 OH dimension techniques.

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Utley, P. , O'Brien, R. , Hard, T. , and George, L. , 1995: Intercomparison of local hydroxyl measurements by radiocarbon an FAGE techniques, J. Atmos. Sciences 52,3421-3427. Cantrell, C. , Lind, J. , Shetter, R. , Calvert, J. , Goldan, P. , Fehsenfeld, F. , Montzka, S. , Parrish, D. , Williams, E. , Buhr, M. , Westberg, H. , 1992: Peroxy radicals in the ROSE experiment - measurement and theory, J. Geophys. Res. 97, 20671-20686. Chameides, W. , Rodgers, M. , Lawson, D. , Rasmussen, R. , 1992: Ozone precursor relationships in the ambient atmosphere, J.

Sci. 52, 3373-3380. Ehhalt, D. , 1991: The chemistry of the hydroxyl radical in the troposphere, Proc. Royal Soc. Ed. 97B, 17-34. Eisele, F. L. and Tanner, D. , 1991: Ion-assisted tropospheric OH measurements, J. Geophys. Res. 96,9295. Eisele, F. , Mount, G. , Fehsenfeld, F. , Parrish, D. , 1994: Intercomparison of tropospheric OH and ancillary trace gas measurements at Fritz Peak Observatory, Colorado, J. Geophys. Res. D99, 18605-18626. , 1995: Assessment of the relative importance of terrestrial, biogenic oxygenated volatile organic compound (BOYOC) emissions for tropospheric ozone formation over central europe, Technical report.

60 S w z 10:00 - 100 60 a. w Z 0 40 0 0 N 40 N 0 20 20 0 0 10 0 20 40 30 T(c ] 10 0 20 40 30 T [c] Figure 4. Left: Scatter plot of 1/2-h means of ozone mixing ratio versus temperature for all data of the campaign. Right: Selected data pairs measured between 10:00 and 15:00 UTe. , 25 20 E " 15 0 =. 10 z 5 0 0 M 4 E ~ 2 0 =. J:J 0 215 220 225 230 235 T IME [days of year] Figure 5. From top to bottom: Condensation nuclei concentration measured at 2 m above ground and aerosol scattering coefficient at 633 nm at the same altitude.

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Atmospheric Measurements during POPCORN — Characterisation of the Photochemistry over a Rural Area by Christian Plass-Dülmer, Theo Brauers (auth.), J. Rudolph, R. Koppmann (eds.)

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