Quantification, diel variation and photochemistry of inorganic chlorine trace gases in continental Germany

<jats:p> A simplified diagram for formation and (photo)chemical transformations of chlorine-containing trace gases in the troposphere. The links to NO <jats:sub> <jats:italic>Y</jats:italic> </jats:sub> ( <jats:italic>e.g.</jats:italic> , NO <jats:sub>2</jats:sub> , NO <jats:sub>3</jats:sub> and N <jats:sub>2</jats:sub> O <jats:sub>5</jats:sub> ) are highlighted, as is the coupling with HO <jats:sub> <jats:italic>X</jats:italic> </jats:sub> cycles (OH and HO <jats:sub>2</jats:sub> ). </jats:p>