Articles | Volume 18, issue 7
Atmos. Chem. Phys., 18, 5157–5171, 2018
https://doi.org/10.5194/acp-18-5157-2018
Atmos. Chem. Phys., 18, 5157–5171, 2018
https://doi.org/10.5194/acp-18-5157-2018

Research article 17 Apr 2018

Research article | 17 Apr 2018

Observations of ozone-poor air in the tropical tropopause layer

Richard Newton et al.

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Cited articles

Atlas, E.: ATTREX Global Hawk AWAS trace gas mixing ratios, Earth Science Project Office (ESPO) Data Archive, available at: https://espoarchive.nasa.gov/archive/browse/attrex/GHawk/AWAS (last access: April 2018), 2014a. a, b
Atlas, E.: NSF/NCAR GV HIAPER Airborne Instrument Solicitation (HAIS) Advanced Whole Air Sampler, Version 1.0, UCAR/NCAR – Earth Observing Laboratory, https://doi.org/10.5065/D6DF6PK9 (last access: April 2018), 2014b. a, b
Andrews, S. J., Carpenter, L. J., Apel, E. C., Atlas, E., Donets, V., Hopkins, J. R., Hornbrook, R. S., Lewis, A. C., Lidster, R. T., Lueb, R., Minaeian, J., Navarro, M., Punjabi, S., Riemer, D., and Schauffler, S.: A comparison of very short lived halocarbon (VSLS) and DMS aircraft measurements in the tropical west Pacific from CAST, ATTREX and CONTRAST, Atmos. Meas. Tech., 9, 5213–5225, https://doi.org/10.5194/amt-9-5213-2016, 2016. a, b
Apel, E. C., Hills, A. J., Lueb, R., Zindel, S., Eisele, S., and Riemer, D. D.: A fast-GC/MS system to measure C2 to C4 carbonyls and methanol aboard aircraft, J. Geophys. Res.-Atmos., 108, 8794, https://doi.org/10.1029/2002JD003199, 2003. a
Ashfold, M. J., Harris, N. R. P., Atlas, E. L., Manning, A. J., and Pyle, J. A.: Transport of short-lived species into the Tropical Tropopause Layer, Atmos. Chem. Phys., 12, 6309–6322, https://doi.org/10.5194/acp-12-6309-2012, 2012. a
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We consider the ozone measurements from aircraft during the CAST/CONTRAST/ATTREX campaigns of 2014. Low concentrations of ozone were found in the layer of 10–15 km altitude, which is indicative of uplift of ozone-poor air from near the sea surface to 10–15 km altitude. Chemicals that have origins in the sea were found in greater abundance when ozone concentrations were low compared to when ozone concentrations were high. The lowest ozone concentrations were found in the Southern Hemisphere.
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