Articles | Volume 2, issue 3
Weather Clim. Dynam., 2, 631–651, 2021
https://doi.org/10.5194/wcd-2-631-2021

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

Weather Clim. Dynam., 2, 631–651, 2021
https://doi.org/10.5194/wcd-2-631-2021

Research article 23 Jul 2021

Research article | 23 Jul 2021

On the occurrence of strong vertical wind shear in the tropopause region: a 10-year ERA5 northern hemispheric study

Thorsten Kaluza et al.

Data sets

ERA5 European Centre for Medium Range Weather Forecasts https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/era5

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Short summary
We present a 10-year analysis on the occurrence of strong wind shear in the Northern Hemisphere, focusing on the region around the transport barrier that separates the first two layers of the atmosphere. The major result of our analysis is that strong wind shear above a certain threshold occurs frequently and nearly exclusively in this region, which, as an indicator for turbulent mixing, might have major implications concerning the separation efficiency of the transport barrier.