Articles | Volume 25, issue 23
https://doi.org/10.5194/acp-25-18209-2025
https://doi.org/10.5194/acp-25-18209-2025
Research article
 | 
11 Dec 2025
Research article |  | 11 Dec 2025

Observations of stratospheric streamers and frozen-in anticyclones in aerosol extinction

Christian Löns, Ronald Eixmann, Christine Pohl, Alexei Rozanov, and Christian von Savigny

Data sets

SAGE III/ISS L2 Solar Event Species Profiles (Native) V006 NASA/LARC/SD/ASDC https://doi.org/10.5067/ISS/SAGEIII/SOLAR_BINARY_L2-V6.0

ERA5 hourly data on pressure levels from 1940 to present Copernicus Climate Change Service https://doi.org/10.24381/CDS.BD0915C6

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Short summary
During the polar vortex season, so-called streamers can transport tropical air towards the pole in the middle stratosphere. This tropical air can get trapped in high-pressure areas at high latitudes after the polar vortex breaks down. In this study, remote sensing instruments are used to observe the course of such streamers by measuring the scattered solar radiation. Aerosols get transported to high latitudes at an altitude of about 25–35 km, increasing the aerosol mass there significantly.
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