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Ozone measurement system for NASA global air sampling programThe ozone measurement system used in the NASA Global Air Sampling Program is described. The system uses a commercially available ozone concentration monitor that was modified and repackaged so as to operate unattended in an aircraft environment. The modifications required for aircraft use are described along with the calibration techniques, the measurement of ozone loss in the sample lines, and the operating procedures that were developed for use in the program. Based on calibrations with JPL's 5-meter ultraviolet photometer, all previously published GASP ozone data are biased high by 9 percent. A system error analysis showed that the total system measurement random error is from 3 to 8 percent of reading (depending on the pump diaphragm material) or 3 ppbv, whichever are greater.
Document ID
19790014483
Document Type
Technical Publication (TP)
Authors
Tiefermann, M. W. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
May 1, 1979
Subject Category
ENVIRONMENT POLLUTION
Report/Patent Number
E-9829
NASA-TP-1451
Funding Number(s)
PROJECT: RTOP 198-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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