Radical variability determined from LIMS and SAMS satellite data |
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Authors: | J A Pyle A M Zavody |
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Institution: | (1) Department of Physical Chemistry, University of Cambridge, Lensfield Road, CB2 1EP Cambridge, England;(2) Rutherford Appleton Laboratory, SERC, Chilton, OX11 0QX Didcot, Oxon, England |
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Abstract: | Using satellite data, the variability of a large number of stratospheric trace constituents can be estimated. These constituents need not themselves be measured by the satellite; their concentrations can be derived using photochemical steady-state relationships. The global coverage provided by the satellite over a long time period means that, for example, monthly zonal mean profiles can be derived. This has been done for H, OH, HO2, H2O2, Cl, ClO, HCl, HOCl, ClONO2, NO and O. The standard deviation of these quantities is a measure of their variability. We argue that comparing theoretical variability estimates with measurements is a better test of a photochemical theory than simply the comparison of single modelled and observed profiles. |
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Keywords: | Stratospheric chemistry satellite data variability |
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