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Global measurements of gaseous and aerosol trace species in the upper troposphere and lower stratosphere from daily flights of 747 airlinersA description is given of the NASA Global Atmospheric Sampling Program (GASP), taking into account the onboard system which collects atmospheric data automatically, the extensive atmospheric measurement capability, and the data handling and distribution procedure. GASP was implemented to assess the environmental impact of aircraft exhaust emissions in the upper troposphere and lower stratosphere. Global air quality data are to be obtained for a period of five to ten years. Measurements of pollutants not related to aircraft exhaust emissions, such as chlorofluoromethanes, are now included. GASP systems are operating on a United Airlines 747, two Pan Am 747s, and a Qantas Airways of Australia 747. Real-time, in-situ measurements are conducted of ozone, water vapor, carbon monoxide, and oxides of nitrogen. Chlorofluoromethanes are measured by laboratory analysis. Typical GASP data show significant changes in ozone, carbon monoxide, and water vapor related to crossings of the tropopause.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Perkins, P. J.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
November 1, 1976
Subject Category
Environment Pollution
Meeting Information
Meeting: Joint Symposium on Nonurban Troposphere
Location: Miami Beach, FL
Country: US
Start Date: November 10, 1976
End Date: November 12, 1976
Sponsors: AMS, AIAA, AGU
Accession Number
Distribution Limits

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