Simon Alexander edited subsection_Case_Studies_We_examine__.tex  almost 9 years ago

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STT events also occur during frontal passages, an example of which is illustrated in Figure~\ref{fig:melbpvumap20100113}d over south-eastern Australia. The tropopauses are much higher at this time and an ozone intrusion is identified centred around 200~hPa.  The relative humidity profiles are anticorrelated with ozone in the upper troposphere for these events, indicating again the stratospheric origin of the ozone-rich air mass.  %On the 3rd of February while an extreme and slowly moving cut-off low was covering Victoria, an ozonesonde was released capturing a typical STT event profile.  \p