Articles | Volume 21, issue 20
Atmos. Chem. Phys., 21, 15375–15407, 2021
https://doi.org/10.5194/acp-21-15375-2021

Special issue: WISE: Wave-driven isentropic exchange in the extratropical...

Atmos. Chem. Phys., 21, 15375–15407, 2021
https://doi.org/10.5194/acp-21-15375-2021

Research article 15 Oct 2021

Research article | 15 Oct 2021

Organic and inorganic bromine measurements around the extratropical tropopause and lowermost stratosphere: insights into the transport pathways and total bromine

Meike K. Rotermund et al.

Data sets

HALO database; editing status 2020-09-23 re3data.org https://doi.org/10.17616/R39Q0T

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Short summary
Airborne total bromine (Brtot) and tracer measurements suggest Brtot-rich air masses persistently protruded into the lower stratosphere (LS), creating a high Brtot region over the North Atlantic in fall 2017. The main source is via isentropic transport by the Asian monsoon and to a lesser extent transport across the extratropical tropopause as quantified by a Lagrange model. The transport of Brtot via Central American hurricanes is also observed. Lastly, the impact of Brtot on LS O3 is assessed.
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