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  • 1
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    Ozone and aircraft operations (1981)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: The cabin ozone problem is discussed. Cabin ozone in terms of health effects, the characteristics of ozone encounters by aircraft, a brief history of studies to define the problem, corrective actions taken, and possible future courses of action are examined. It is suggested that such actions include avoiding high ozone concentrations by applying ozone forecasting in flight planning procedures.
    Keywords: GEOPHYSICS
    Type: NASA. Marshall Space Flight Center Proc.: 5th Ann. Workshop on Meteorol. and Environ. Inputs to Aviation Systems; p 40-44
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Global measurements of gaseous and aerosol trace species in the upper troposphere and lower stratosphere from daily flights of 747 airliners (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Extensive measurements include ozone, carbon monoxide, water vapor, and aerosol and condensation nuclei number density. Less extensive measurements include chlorofluoromethanes, sulfates and nitrates. Certain meteorological and flight information are also recorded at the time of these measurements. World routes range in latitude from about 60 deg N near North America to about 40 deg S over Australia and 23 deg S over South America. Typical data show significant changes in ozone, carbon monoxide, and water vapor when crossing the tropopause either during changes in altitude or at cruise altitude. These gases as well as light scattering particles and condensation nuclei exhibit considerable variability along a flight route.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-73544 , E-8945 , Joint Symp. of the Am. Geophys. Union; Nov 10, 1976 - Nov 12, 1976; Miami, FL; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    An automated atmospheric sampling system operating on 747 airliners (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: An air sampling system that automatically measures the temporal and spatial distribution of selected particulate and gaseous constituents of the atmosphere has been installed on a number of commercial airliners and is collecting data on commercial air routes covering the world. Measurements of constituents related to aircraft engine emissions and other pollutants are made in the upper troposphere and lower stratosphere (6 to 12 km) in support of the Global Air Sampling Program (GASP). Aircraft operated by different airlines sample air at latitudes from the Arctic to Australia. This system includes specialized instrumentation for measuring carbon monoxide, ozone, water vapor, and particulates, a special air inlet probe for sampling outside air, a computerized automatic control, and a data acquisition system. Air constituents and related flight data are tape recorded in flight for later computer processing on the ground.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-71790 , E-8455 , Intern. Conf. on Environ. Sensing and Assessment,; Sep 14, 1975 - Sep 19, 1975
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Atmospheric constituent measurements using commercial 747 airliners (1973)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: NASA is implementing a Global Atmospheric Monitoring Program to measure the temporal and spatial distribution of particulate and gaseous constituents related to aircraft engine emissions in the upper troposphere and lower stratosphere (6 to 12 Km). Several 747 aircraft operated by different airlines flying routes selected for maximum world coverage will be instrumented. An instrumentation system is being assembled and tested and is scheduled for operation in airline service in late 1974. Specialized instrumentation and an electronic control unit are required for automatic unattended operation on commercial airliners. An ambient air sampling system was developed to provide undisturbed outside air to the instruments in the pressurized aircraft cabin.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-71469 , E-7770 , Joint Conf. on the Sensing of Environ. Pollutants; Dec 10, 1973 - Dec 12, 1973; Washington, DC; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Measurement of high-altitude air quality using aircraft. (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The minor atmospheric constituents associated with and affected by aircraft exhaust emissions at altitudes from 6 to 20 km will be monitored in flight programs presently being implemented. Preliminary in situ data are available from flight tests of dedicated instruments to be used in these programs. A Global Atmospheric Sampling Program using Boeing 747 airliners was determined to be feasible in studies conducted by airlines and airframe companies. Worldwide monitoring in the troposphere and the lower stratosphere is planned. Stratospheric air sampling on a more local basis will be done with a U2 aircraft. Measuring system evaluations and improvements have been required to detect the low background levels.
    Keywords: GEOPHYSICS
    Type: AIAA PAPER 73-517 , International Conference on the Environmental Impact of Aerospace Operations in the High Atmosphere; Jun 11, 1973 - Jun 13, 1973; Denver, CO; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Global sensing of gaseous and aerosol trace species using automated instrumentation on 747 airliners (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Global Atmospheric Sampling Program (GASP) by NASA is collecting and analyzing data on gaseous and aerosol trace species in the upper troposphere and lower stratosphere. Measurements are obtained from automated systems installed on four 747 airliners flying global air routes. Advances were made in airborne sampling instrumentation. Improved instruments and analysis techniques are providing an expanding data base for trace species including ozone, carbon monoxide, water vapor, condensation nuclei and mass concentrations of sulfates and nitrates. Simultaneous measurements of several trace species obtained frequently can be used to uniquely identify the source of the air mass as being typically tropospheric or stratospheric. A quantitative understanding of the tropospheric-stratospheric exchange processes leads to better knowledge of the atmospheric impact of pollution through the development of improved simulation models of the atmosphere.
    Keywords: GEOPHYSICS
    Type: NASA-TM-73810 , E-9396 , Joint Conf. on Sensing of Environmental Pollutants; Nov 06, 1977 - Nov 11, 1977; New Orleans, LA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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