Articles | Volume 23, issue 24
https://doi.org/10.5194/acp-23-15365-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-15365-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
15 Dec 2023
Research article |
| 15 Dec 2023
| 15 Dec 2023
The role of a low-level jet for stirring the stable atmospheric surface layer in the Arctic
Atmospheric Microphysics, Leibniz Institute for Tropospheric Research, Permoserstr. 15, 04318 Leipzig, Germany
now at: National Renewable Energy Laboratory (NREL), 15013 Denver W Parkway, Golden, CO 80401, USA
Holger Siebert
Atmospheric Microphysics, Leibniz Institute for Tropospheric Research, Permoserstr. 15, 04318 Leipzig, Germany
Olaf Hellmuth
Modeling of Atmospheric Processes, Leibniz Institute for Tropospheric Research, Permoserstr. 15, 04318 Leipzig, Germany
Lise Lotte Sørensen
Department of Environmental Science, iClimate, Arctic Research Centre ARC, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
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Short summary
Low-level jets (LLJs) are strong winds near the surface and occur frequently in the Arctic in stable conditions. Using tethered-balloon profile measurements in Greenland, we analyze a multi-hour period with an LLJ that later weakens and finally collapses. Increased shear-induced turbulence at the LLJ bounds mostly does not reach the ground until the LLJ collapses. Our findings support the hypothesis that a passive tracer can be advected with an LLJ and mixed down when the LLJ collapses.
Low-level jets (LLJs) are strong winds near the surface and occur frequently in the Arctic in...
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