Impact of convection on the upper-tropospheric composition (water vapor and ozone) over a subtropical site (Réunion island; 21.1°&thinsp;S, 55.5°&thinsp;E) in the Indian Ocean

Héron, Damien; Evan, Stéphanie; Brioude, Jérôme; Rosenlof, Karen; Posny, Françoise; Metzger, Jean-Marc; Cammas, Jean-Pierre

doi:https://doi.org/10.5194/acp-20-8611-2020

Articles | Volume 20, issue 14

https://doi.org/10.5194/acp-20-8611-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-8611-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 14

Research article

|

22 Jul 2020

Research article |

| 22 Jul 2020

Impact of convection on the upper-tropospheric composition (water vapor and ozone) over a subtropical site (Réunion island; 21.1° S, 55.5° E) in the Indian Ocean

Damien Héron, Stéphanie Evan, Jérôme Brioude, Karen Rosenlof, Françoise Posny, Jean-Marc Metzger, and Jean-Pierre Cammas

Data sets

MFG-IODC+57° Jacques Descloitres http://www.icare.univ-lille1.fr/archive

SHADOZ Southern Hemisphere ADditional OZonesondes Anne M. Thompson https://tropo.gsfc.nasa.gov/shadoz/Reunion.html

Short summary

Using a statistical method, summer variations (between 2013 and 2016) of ozone and water vapor are characterized in the upper troposphere above Réunion island (21° S, 55° E). It suggests a convective influence between 9 and 13 km. As deep convection is rarely observed near Réunion island, this study provides new insights on the long-range impact of deep convective outflow from the Intertropical Convergence Zone (ITCZ) on the upper troposphere over a subtropical site.