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  • Articles  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Indirect influence of ozone depletion on climate forcing by clouds (1994)
    [s.l.] : Nature Publishing Group
    Nature 372 (1994), S. 348-351 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The hydroxyl radical is primarily produced by the photodisso-ciation of ozone (O3) by radiation of wavelength near 310 nm in the presence of water vapour. O3+H2O+hv 2OH+O2 OH can then initiate the oxidation of SO2 to sulphuric acid. The production rate, R, of sulphuric acid is thought to be a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/372348a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Climate and CCN (1995)
    [s.l.] : Nature Publishing Group
    Nature 375 (1995), S. 111-111 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TOUMI ET AL. REPLY - We agree with the points raised by Rodhe and Crutzen. However, we still maintain that the main uncertainty is the relationship between H2SO4 and cloud droplets and not the extent to which H2SO4 production has changed. We are encouraged by a recent modelling ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/375111b0
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  • 3
    Electronic Resource
    Electronic Resource
    A model study of ATMOS observations and the heterogeneous loss of N2O5 by the sulphate aerosol layer (1993)
    Springer
    Journal of atmospheric chemistry 16 (1993), S. 135-144 
    Details
    ISSN: 1573-0662
    Keywords: Ozone ; ATMOS ; stratosphere ; N2O5 ; aerosol layer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract The heterogeneous removal of N2O5 by sulphuric acid aerosols as been invoked to explain the decline of mid-latitude ozone in the last decade. We have used a photochemical model to study measurements of odd-nitrogen made by Spacelab 3. The gas-phase photochemical model overestimates the amount of N2O5 present. The loss of N2O5 by aerosols does reduce N2O5, but is likely to be slower than assumed in WMO (1992). The sunset measurements at 25.5 km cannot be explained by heterogeneous loss of N2O5 and is more likely to be due to a faster photolysis than assumed. New absorption cross-sections of HNO3 reduce the photolysis of HNO3 so that the model with gas-phase chemistry only gives better agreement at 19 km, than a model including heterogeneous chemistry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00702783
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    Paper (German National Licenses)
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