U. Schumann, G. Gesell, H. Höller, K.-T. Kriebel, R. Meerkötter, P. Mörl, M.E. Reinhardt, W. Renger, K.-P. Schickel, B. Strauß, P. Wendling

Condensation trails (contrails) from air traffic in the upper troposphere may have an effect on the earth's climate. We first discuss the state of knowledge. Then some results of radiation transfer calculations are reported which help to estimate the order of magnitude of the effects of cirrus clouds and water vapour in comparison to doubling of the concentration of C02. The main part of the paper describes the analysis of contrails from satellite data. Based on NOAA-AVHRR data we present results for a specific case where contrails covered a few percent of a region including southern Germany and the Alps. Preliminary results are reported for 62 further cases. A pattern recognition method is described to identify contrails and the related cloud cover automatically. Laser observations reflect contrail crosssections which are several km in width and about 700 m thick.

Eurpean Propulsion Forum, 1990, Köln

Conference Paper

englisch

21,0 x 29,7 cm, 9 Seiten

DGLR-Bericht, 1990, 1990-01, Eurpean Propulsion Forum: Future Civil Engines and the Protection of the Atmosphere - Proceedings; S.49-57; 1990; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

Bestellbar

1990