The aircraft industry is showing renewed interest in the development of supersonic, high flying aircraft for intercontinental passenger flights. There appears to be confidence that such high-speed civil transports can be designed, and that aircraft will be economically viable as long as they are also environmentally acceptable. As such, it is important to establish the potential for such environmental problems early in the aircraft design. Initial studies with LLNL models of global atmospheric chemical, radiative, and transport processes have indicated that substantial decreases in stratospheric ozone concentrations could result from emissions of NO(sub x) from aircraft flying the stratosphere, depending on the fleet size and magnitude of the engine emissions. The purpose of this study is to build on previous analyses of potential aircraft emission effects on ozone in order to better define the sensitivity of ozone to such emissions. In addition to NO(sub x), the effects of potential emissions of carbon monoxide and water vapor are also examined. More realistic scenarios for the emissions as a function of altitude, latitude, and season are examined in comparison to prior analyses. These studies indicate that the effects on ozone are sensitive to the altitude and latitude, as well as the magnitude, of the emissions.
Sensitivity of stratospheric ozone to present and possible future aircraft emissions
1990
28 pages
Report
Keine Angabe
Englisch
Air Pollution & Control , Physical Meteorology , Aircraft , Ozone Layer , Supersonic Transport , Nitrogen Oxides , Carbon Monoxide , Computerized Simulation , Earth Atmosphere , Ecological Concentration , Emission , Exhaust Gases , Lawrence Livermore Laboratory , One-Dimensional Calculations , Stratosphere , Theoretical Data , Two-Dimensional Calculations , Water Vapor , Meetings , Tables(data) , Air pollution , Exhaust emissions , EDB/540120 , EDB/320201
Stratospheric Ozone: Past, Present, and Future
NTRS | 1996
|The impact of NO~x aircraft emissions on stratospheric and tropospheric ozone
British Library Conference Proceedings | 1994
|