Observations of ozone-poor air in the tropical tropopause layer

Newton, Richard; Vaughan, Geraint; Hintsa, Eric; Filus, Michal T.; Pan, Laura L.; Honomichl, Shawn; Atlas, Elliot; Andrews, Stephen J.; Carpenter, Lucy J.

doi:https://doi.org/10.5194/acp-18-5157-2018

Articles | Volume 18, issue 7

https://doi.org/10.5194/acp-18-5157-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-5157-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 7

Research article

|

17 Apr 2018

Research article |

| 17 Apr 2018

Observations of ozone-poor air in the tropical tropopause layer

Richard Newton, Geraint Vaughan, Eric Hintsa, Michal T. Filus, Laura L. Pan, Shawn Honomichl, Elliot Atlas, Stephen J. Andrews, and Lucy J. Carpenter

Supplement

https://doi.org/10.5194/acp-18-5157-2018-supplement

Data sets

CAST data P. Braesicke, N. Harris, J. A. Pyle, A. Robinson, and G. Vaughan http://catalogue.ceda.ac.uk/uuid/565b6bb5a0535b438ad2fae4c852e1b3

CONTRAST data Earth Observation Laboratory (EOL) http://data.eol.ucar.edu/master_list/?project=CONTRAST

CONTRAST data: Advanced whole air sampler E. Atlas https://doi.org/10.5065/D6DF6PK9

CONTRAST data: NO, NO2, O3 in situ chemiluminescence data A. J. Weinheimer https://doi.org/10.5065/D6PK0D6N

ATTREX data Earth Science Project Office (ESPO) https://espoarchive.nasa.gov/archive/browse/attrex

ATTREX data: Advanced whole air sampler E. Atlas https://espoarchive.nasa.gov/archive/browse/attrex/GHawk/AWAS

ATTREX data: Meteorological Measurement System T. P. Bui https://espoarchive.nasa.gov/ archive/browse/attrex/GHawk/MMS-1HZ

ATTREX data: Unmanned Aircraft Systems (UAS) Chromatograph for Atmospheric Trace Species (UCATS) J. W. Elkins https://espoarchive.nasa.gov/archive/browse/attrex/GHawk/UCATS-O3

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Short summary

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.