caa a22 4500 475823346 CHVBK 20180406123824.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1023/A:1006468926530 doi (NATIONALLICENCE)springer-10.1023/A:1006468926530 Stratospheric Photolysis Frequencies: Impact of an Improved Numerical Solution of the Radiative Transfer Equation [Elektronische Daten] [Gaby Becker, Jens-Uwe Grooss, Daniel McKenna, Rolf Müller] Numerical schemes for the calculation of photolysis rates are usually employed in simulations of stratospheric chemistry. Here, we present an improvement of the treatment of the diffuse actinic flux in a widely used stratospheric photolysis scheme (Lary and Pyle, 1991). We discuss both the consequences of this improvement and the correction of an error present in earlier applications of this scheme on the calculation of stratospheric photolysis frequencies. The strongest impact of both changes to the scheme is for small solar zenith angles. The effect of the improved treatment of the diffuse flux is most pronounced in the lower stratosphere and in the troposphere. Overall, the change in the calculated photolysis frequencies in the region of interest in the stratosphere is below about 20%, although larger deviations are found for H2O, O2, NO, N2O, and HCl. Kluwer Academic Publishers, 2000 photolysis frequencies nationallicence stratospheric chemistry nationallicence radiative transfer equation nationallicence numerical simulation of actinic flux nationallicence Becker Gaby Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut Grooss Jens-Uwe Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut McKenna Daniel Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut Müller Rolf Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut Journal of Atmospheric Chemistry Kluwer Academic Publishers 37/3(2000-11-01), 217-229 0167-7764 37:3<217 2000 37 10874 https://doi.org/10.1023/A:1006468926530 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1006468926530 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Becker Gaby Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Grooss Jens-Uwe Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- McKenna Daniel Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 700 1- Müller Rolf Institute for Stratospheric Chemistry (ICG-1), Forschungszentrum Jülich, 52425, Jülich, Germany aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers 37/3(2000-11-01), 217-229 0167-7764 37:3<217 2000 37 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer