Simulation of chemical kinetics transport in the stratosphere

Conference · Mon Oct 01 04:00:00 EDT 1973

OSTI ID:4407698

Chang, J S; Hindmarsh, A C; Madsen, N K

From symposium on stiff differentials system; Wildbad, F. R. Germany (4 Oct 1973). The residence time of any material brought into the stratosphere is quite large (order of a year or more). With the advent of supersonic transports, the environmental impact of the engine exhaust has become a major concern. A principal concern has been the possible catalytic destruction of ozone (O/sub 3/) by nitric oxide (NO). Given a fleet of SST's the injected NO concentration could exceed many times the ambient. Furthermore, the enhanced NO concentrations will greatly increase the destruction of O/sub 3/ through the socalled NO/sub x/ catalytic cycle. It has been estimated that based on certain estimates of NO production rate from SST there could be a world wide reduction in ozone of from 3% to 50%. Atmospheric nuclear tests in the 1950's and early 1960's injected substantial amounts of NO/sub x/ into the stratosphere. It would follow that an examination of the ozone measurements of that period could possibly be used to estimate the significance of NO/sub x/ catalytic destruction of ozone in the stratosphere. In order to carry out such a study one must use a time dependert model and compute the time history of perturbations from 1956 to 1970 starting with the ambient atmosphere as determined by the model. By parameterizing the processes of production and injection of NO into the stratosphere during each atmospheric nuclear test, a highly discortinuous source function was constructed for use in prediction of changes in the yearly averaged ozone measurements. (CH)

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• NSA Number: NSA-29-005154
• OSTI ID: 4407698
• Report Number(s): UCRL--74823; CONF-731043--1
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*NITROGEN OXIDES-- CHEMICAL REACTIONS
*OZONE-- CHEMICAL REACTIONS
*SUPERSONIC TRANSPORT-- AIR POLLUTION
ATMOSPHERIC EXPLOSIONS
ENGINES
MATHEMATICAL MODELS
N40210 --Chemistry--Inorganic
Organic
& Physical Chemistry--Chemical & Physiochemical Properties
N44700* --Environmental & Earth Sciences--Chemical Effluents
NUCLEAR EXPLOSIONS
RESIDUES
STRATOSPHERE
TRACER TECHNIQUES