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Steffen Beirle, Ulrich Platt, Thomas Wagner

S 0. S 1. Impact of clouds on NO 2 columns: an empirical study SCIAMACHY data 2003-2006 mean tropospheric SCDs as function of cloud fraction → “pure“ measurement. S=f(cf) Fit → S 0 , S 1 Ratio S 0 /S 1 : „Cloud shielding index“.

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Steffen Beirle, Ulrich Platt, Thomas Wagner

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  1. S0 S1 • Impact of clouds on NO2 columns: an empirical study • SCIAMACHY data 2003-2006 • mean tropospheric SCDs as function of cloud fraction • → “pure“ measurement • S=f(cf) • Fit → S0, S1 • Ratio S0/S1: • „Cloud shielding index“ Steffen Beirle, Ulrich Platt, Thomas Wagner Satellite Group Mainz-Heidelberg

  2. Cloud shielding index Europe Steffen Beirle, Ulrich Platt, Thomas Wagner Satellite Group Mainz-Heidelberg

  3. East Asia Mean summer tropospheric NO2 slant column density (molec/cm2)

  4. East Asia Mean summer cloud shielding index

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