Transport into the polar stratosphere from the Asian monsoon region

Yan, Xiaolu; Konopka, Paul; Ploeger, Felix; Podglajen, Aurélien

doi:https://doi.org/10.5194/acp-25-1289-2025

Articles | Volume 25, issue 2

https://doi.org/10.5194/acp-25-1289-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-25-1289-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 25, issue 2

Research article

|

29 Jan 2025

Research article |

| 29 Jan 2025

Transport into the polar stratosphere from the Asian monsoon region

Xiaolu Yan, Paul Konopka, Felix Ploeger, and Aurélien Podglajen

Data sets

Combined Atmospheric Sulfur hexaflouride Dry Air Mole Fractions from the NOAA GML Halocarbons Sampling Network, 1995–2024 Geoffrey S. Dutton et al. https://doi.org/10.15138/TQ02-ZX42

Data Quality Flags for ACE-FTS Level 2 Version 4.1/4.2 Data Set Patrick Sheese and Kaley Walker https://doi.org/10.5683/SP2/BC4ATC

Short summary

Our study finds that the air mass fractions (AMFs) from the Asian boundary layer (ABL) to the polar regions are about 1.5 times larger than those from the same latitude band in the Southern Hemisphere. The transport of AMFs from the ABL to the polar vortex primarily occurs above 20 km and over timescales exceeding 2 years. Our analysis reveals a strong correlation between the polar pollutants and the AMFs from the ABL. About 20 % of SF₆ in the polar stratosphere originates from the ABL.