Passenger aircraft project CARIBIC 1997–2002, Part II: the ventilation of the lowermost stratosphere

In Part II of this study, O 3 and CO data collected onboard passenger aircraft at 9-12 km altitude (project CARIBIC) are analysed with respect to downward propagation of stratospheric ozone through the lowermost stratosphere (LMS) and in-mixing of tropospheric air into the LMS.Throughout the LMS ozone undergoes a well-known sine ACPD 4