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  • balloon  (1)
  • stratospheric composition  (1)
  • 2000-2004
  • 1990-1994  (2)
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  • 2000-2004
  • 1990-1994  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Ozone measurements from the Balloon Intercomparison Campaign (1990)
    Springer
    Journal of atmospheric chemistry 10 (1990), S. 181-218 
    Details
    ISSN: 1573-0662
    Keywords: Ozone ; intercomparison ; balloon ; stratosphere
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract Measurements of the Balloon Intercomparison Campaign (BIC), conducted during fall, 1982 (BIC-1) and summer, 1983 (BIC-2), are reported. Results of five remote and two in situ techniques agree (with a few exceptions) within 95% confidence level uncertainties and generally within 15% above 20 km. Weighted mean profiles, which best represent conditions during the capaign, are used as a comparison standard. Accuracies of experiments indicated by BIC generally confirm estimated uncertainites for ECC sondes, UV photometry, and microwave emission experiments, are somewhat better for far IR emission and IR absorption experiments, and are somewhat worse for IR emission and solar UV absorption experiments. The large collection of BIC measurements confirms a problem reported earlier with current theoretical modeling of ozone near 40 km where transport is negligible and the chemistry is believed to be simpler.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00054856
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  • 2
    Electronic Resource
    Electronic Resource
    Balloon Intercomparison Campaigns: Results of remote sensing measurements of HCl (1990)
    Springer
    Journal of atmospheric chemistry 10 (1990), S. 237-272 
    Details
    ISSN: 1573-0662
    Keywords: stratospheric composition ; HCl ; remote sensing ; atmospheric spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract All of the techniques used to measure stratospheric HCl during the two BIC campaigns involved high resolution infrared spectroscopy. The balloon-borne instruments included five different spectrometers, three operating in the solar absorption mode and two in emission (at distinctly different wavelengths). Ground-based and aircraft correlative measurements were made close to the balloon locations, again by near-infrared spectroscopy. Within this set of results, comparisons between different techniques (absorption vs emission) viewing the same airmass (i.e., on the same gondola) were possible, as were comparisons between the same technique used on different gondolas spaced closely in time and location. The final results yield a mean profile of concentration of HC1 between 18 and 40 km altitude; an envelope of ±15% centered on this profile encompasses all of the results within one standard deviation of their individual mean values. The absolute accuracy of the final profile is estimated to be no worse than 10%. It is concluded also that the measurement techniques for HCl have reached a level of performance where a precision of 10% to 15% can be confidently expected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00054858
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    Paper (German National Licenses)
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