Atmospheric Measurements During Popcorn -- Characterisation of the Photochemistry Over a Rural Area

ISBN-13: 9780792355311 / Angielski / Twarda / 1999 / 246 str.

R. Koppmann; J. Rudolph; Ralf Koppmann

Opis

Present policy issues concern the reduction of ozone levels by controlling its precursors, NO_x and volatile organic compounds (VOC). VOC are emitted from anthropogenic and biogenic sources. Whereas our understanding of VOC emissions from anthropogenic sources has advanced significantly in recent years, there is still a lack of knowledge concerning the contribution of biogenic VOC to the budget of organic trace gases and their impact on the formation of ozone in the troposphere. Improving ozone reduction strategies in the future requires a detailed understanding of the chemical processes in the troposphere.
This book comprises the results of atmospheric measurements obtained during the field campaign POPCORN (Photo-Oxidant Formation by Plant Emitted Compounds and OH Radicals in North-Eastern Germany) which was carried out to investigate the role and impact of biogenic trace gases on tropospheric chemistry. This volume describes meteorological situations and origins of air masses during the campaign, and presents measurements of a variety of trace gases, solar radiation and photolysis frequencies. Special attention is given to OH radical measurements and the in-situ comparison of the two OH measurement techniques.

Spis treści

1. A Field Study of Photochemistry in North-Eastern Germany; Plass-Duelmer, et al. 2. Meteorological Aspects, Ozone and Solar Radiation Measurements During POPCORN 1994; Brauers, et al. 3. Measurements of Carbon Monoxide and Nonmethane Hydrocarbons During POPCORN; Koppmann, et al. 4. Measurements of Volatile Organic Compounds (VOC) During POPCORN 1994: Applying a New On-Line GC-MS-Technique; Wedel, et al. 5. Measurements of Atmospheric Formaldehyde and Acetaldehyde During POPCORN 1994 Using 2.4-DNPH Coated Silica Cartridges; Benning, et al. 6. Mixing Ratios and Photostationary State of NO and NO2 Observed During the POPCORN Field Campaign at a Rural Site in Germany; Rohrer, et al. 7. Peroxyacetyl Nitrate (PAN) Measurements During the POPCORN Campaign; Schrimpf, et al. 8. Field Measurements of Atmospheric Photolysis Frequencies for O3, NO2, HCHO, CH3CHO, H2O2, and HONO by UV Spectroradiometry; Kraus, et al. 9. In-Situ Measurements of tropospheric Hydroxyl Radicals by Folded Long-Path Laser Absorption During the Field Campaign POPCORN; Brandenburger, et al. 10. Highly Time Resolved Measurements of OH During POPCORN Using Laser-Induced Fluorescence Spectroscopy; Holland, et al. 11. Intercomparison of Tropospheric OH Measurements by Different Laser Techniques during the POPCORN Campaign 1994.