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  • AIRCRAFT INSTRUMENTATION  (1)
  • temperature effect  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Calculations of the temperature dependence of the NO2 photodissociation coefficient in the atmosphere (1984)
    Springer
    Journal of atmospheric chemistry 1 (1984), S. 151-157 
    Details
    ISSN: 1573-0662
    Keywords: Atmosphere ; photolysis ; nitrogen dioxide ; photodissociation coefficient ; temperature effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract The photodissociation coefficient, J NO2 of NO2 in the atmosphere was calculated at 235 and 298 K using the measured temperature dependences of the absorption cross-sections and quantum yields. These calculations gave a ratio J NO2(298 K)/J NO2(235 K)=1.155±0.010 which is only weakly dependent on altitude, surface albedo and solar zenith angle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00053837
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    Paper (German National Licenses)
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    An intercomparison of airborne nitrogen dioxide instruments (1990)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Results on NO2 instruments are reported from the NASA Global Tropospheric Experiment Chemical Instrumentation Test and Evaluation 2 (CITE 2) program in summer 1986. The instruments tested were (1) a two-photon LIF system using a laser for NO2-NO photolysis, (2) a chemiluminescence (CL) detector using FeSO4 for NO2-NO conversion, (3) a CL detector using an arc lamp for NO2-NO photolysis, and (4) a tunable-laser-diode multipath-absorption system. The procedures for the CITE 2 ground-based and flight tests are described in detail, and the results are presented in extensive graphs. Instrument (2) was eliminated because the FeSO4 converted atmospheric PAN to NO, resulting in spuriously high NO2 values. The remaining instruments gave readings in 30-40-percent agreement at NO2 mixing ratios of 100-200 parts per trillion by volume (pptv). At ratios below 50 pptv, the correlation among the measurements was very poor, with a tendency for system (4) to give higher values than (1) or (3).
    Keywords: AIRCRAFT INSTRUMENTATION
    Type: Journal of Geophysical Research (ISSN 0148-0227); 95; 10103-10
    Format: text
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    NASA TECHNICAL REPORTS
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