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  • J NO 2measurement  (1)
  • METEOROLOGY AND CLIMATOLOGY  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Measurement of the photodissociation coefficient of NO2 in the atmosphere: I. Method and surface measurements (1983)
    Springer
    Journal of atmospheric chemistry 1 (1983), S. 3-25 
    Details
    ISSN: 1573-0662
    Keywords: J NO 2 ; NO2 photolysis ; atmospheric photochemistry ; J NO 2measurement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract An instrument, specifically designed for measurements from a balloon platform in the stratosphere, has been used to obtain ground-level values of the atmospheric photodissociation coefficient of nitrogen dioxide, J NO 2.A typical clear-sky value is 8.0×10-3 s-1 when the solar zenith angle is 40°. Measurements were made as a function of solar zenith angle and correlated with a calibrated Eppley UV radiometer. It is shown that J NO 2may be expressed as a simple function of the radiometer output so that estimates of J NO 2can be made using just an upward looking radiometer to an accuracy of about 20%. The measurements are also found to be in good agreement with calculations of J NO 2using a simplified isotropic multiple scattering computer routine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00113977
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    Paper (German National Licenses)
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  • 2
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    Indications of photochemical histories of Pacific air masses from measurements of atmospheric trace species at Point Arena, California (1992)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Measurements were made of a suite of photochemically active trace species (including light hydrocarbons, ozone, peroxyacetyl nitrate, HNO3, NO3(-), NO(x), and NO(y)) in marine air collected during a 10-day period in April and May 1985 at Point Arena (California), a coastal inflow site. It was found that the mixing ratios of the alkanes, ozone, peroxyacetyl nitrate, and HNO3 correlated with variations in the origins of calculated air parcel trajectories and with variations in the ratios of the light alkanes. The highest levels of alkanes and the photochemical products were found in parcels that had been rapidly transported across the North Pacific Ocean from near the 600-mbar level above the east Asian coast. It is suggested that production over the continents, transport to the marine areas, and parallel removal processes account for much of the observed correlation.
    Keywords: METEOROLOGY AND CLIMATOLOGY
    Type: Journal of Geophysical Research (ISSN 0148-0227); 97; D14; p. 15,883-15,901.
    Format: text
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    NASA TECHNICAL REPORTS
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