Rarity of upper-tropospheric low O 3 concentration events during MOZAIC flights

@inproceedings{Asman2003RarityOU,
  title={Rarity of upper-tropospheric low O 3 concentration events during MOZAIC flights},
  author={Willem Asman and Mark Lawrence and Carl A. M. Brenninkmeijer and Paul J. Crutzen and Johannes W. M. Cuijpers and Philippe N{\'e}d{\'e}lec},
  year={2003}
}
Only a few previous observations of very low O 3 concentrations in the upper troposphere are available. The aim of this study was to examine the rich MOZAIC data set for more. Flights with at least 25 4 s averaged concentrations less than 8 ppbv at pressures lower than 500 hPa measured using commercial aircraft within the MOZAIC project have been analysed. There are eleven flights that fulfill these conditions (excluding artefacts as discussed below), representing about 0.001% of all… CONTINUE READING