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  • ENVIRONMENT POLLUTION  (1)
  • METEOROLOGY AND CLIMATOLOGY  (1)
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  • 1
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    Vertical profiles of CO and CH4 in the lower and middle troposphere over the Eastern United States January 1978 (1979)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Samples of tropospheric air were obtained over the Eastern United States during January of 1978. These samples were analyzed by gas chromatography using flame ionization detection to produce vertical profiles of carbon monoxide and methane from the surface to 8 km. The carbon monoxide mixing ratios at 35 deg N and 45 deg N agree with previously published values; however, the mixing ratio at 25 deg N was significantly lower than most published values. The methane mixing ratio was weakly dependent on latitude and has an average value of 1.64 ppm.
    Keywords: ENVIRONMENT POLLUTION
    Type: Geophysical Research Letters; 6; Dec. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Measurements of CO and CH4 in the troposphere over Saudi Arabia, India, and the Arabian Sea during the 1979 International Summer Monsoon Experiment /MONEX/ (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: During the 1979 Summer MONEX, 150 air samples collected over Saudi Arabia, India, and the Arabian Sea were analyzed for CO and CH4. Near Dhahran and over the Ganges Valley there were high concentrations of CO, around 300 ppbv, in the boundary layer. Out over the Saudi Arabian desert there was no sharp increase in the boundary layer. It is suggested that these high concentrations originate from pollution sources. Low values of CO, down to 80 ppbv, are found over the Arabian Sea as the monsoon progresses, and these may originate from the Southern Hemisphere. Methane over Saudi Arabia (1.59 ppmv) is a little higher than that over the Arabian Sea (1.54 ppmv) probably because the latter region is influenced by air from the Southern Hemisphere.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Geophysical Research; 86; Oct. 20
    Format: text
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    NASA TECHNICAL REPORTS
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