Articles | Volume 19, issue 9
https://doi.org/10.5194/acp-19-6535-2019
https://doi.org/10.5194/acp-19-6535-2019
Research article
 | 
17 May 2019
Research article |  | 17 May 2019

A numerical process study on the rapid transport of stratospheric air down to the surface over western North America and the Tibetan Plateau

Bojan Škerlak, Stephan Pfahl, Michael Sprenger, and Heini Wernli

Related authors

Case study of a long-lived Siberian summer cyclone that evolved from a heat low into an Arctic cyclone
Franziska Schnyder, Ming Hon Franco Lee, and Heini Wernli
EGUsphere, https://doi.org/10.5194/egusphere-2025-1724,https://doi.org/10.5194/egusphere-2025-1724, 2025
This preprint is open for discussion and under review for Weather and Climate Dynamics (WCD).
Short summary
The interaction of warm conveyor belt outflows with the upper-level waveguide: a four-type climatological classification
Selvakumar Vishnupriya, Michael Sprenger, Hanna Joos, and Heini Wernli
EGUsphere, https://doi.org/10.5194/egusphere-2025-1731,https://doi.org/10.5194/egusphere-2025-1731, 2025
This preprint is open for discussion and under review for Weather and Climate Dynamics (WCD).
Short summary
Revealing the dynamics of a local Alpine windstorm using large-eddy simulations
Nicolai Krieger, Heini Wernli, Michael Sprenger, and Christian Kühnlein
Weather Clim. Dynam., 6, 447–469, https://doi.org/10.5194/wcd-6-447-2025,https://doi.org/10.5194/wcd-6-447-2025, 2025
Short summary
psit 1.0: A System to Compress Lagrangian Flows
Alexander Pietak, Langwen Huang, Luigi Fusco, Michael Sprenger, Sebastian Schemm, and Torsten Hoefler
EGUsphere, https://doi.org/10.5194/egusphere-2025-793,https://doi.org/10.5194/egusphere-2025-793, 2025
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
Short summary
Insights from hailstorm track analysis in European climate change simulations
Killian P. Brennan, Iris Thurnherr, Michael Sprenger, and Heini Wernli
EGUsphere, https://doi.org/10.5194/egusphere-2025-918,https://doi.org/10.5194/egusphere-2025-918, 2025
This preprint is open for discussion and under review for Natural Hazards and Earth System Sciences (NHESS).
Short summary

Related subject area

Subject: Dynamics | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
Country- and species-dependent parameters for the heating degree day method to distribute NOx and PM emissions from residential heating in the EU 27: application to air quality modelling and multi-year emission projections
Antoine Guion, Florian Couvidat, Marc Guevara, and Augustin Colette
Atmos. Chem. Phys., 25, 2807–2827, https://doi.org/10.5194/acp-25-2807-2025,https://doi.org/10.5194/acp-25-2807-2025, 2025
Short summary
Valley floor inclination affecting valley winds and transport of passive tracers in idealised simulations
Johannes Mikkola, Alexander Gohm, Victoria A. Sinclair, and Federico Bianchi
Atmos. Chem. Phys., 25, 511–533, https://doi.org/10.5194/acp-25-511-2025,https://doi.org/10.5194/acp-25-511-2025, 2025
Short summary
To what extent is the description of streets important in estimating local air quality: a case study over Paris
Alexis Squarcioni, Yelva Roustan, Myrto Valari, Youngseob Kim, Karine Sartelet, Lya Lugon, Fabrice Dugay, and Robin Voitot
Atmos. Chem. Phys., 25, 93–117, https://doi.org/10.5194/acp-25-93-2025,https://doi.org/10.5194/acp-25-93-2025, 2025
Short summary
Variability and trends in the potential vorticity (PV)-gradient dynamical tropopause
Katharina Turhal, Felix Plöger, Jan Clemens, Thomas Birner, Franziska Weyland, Paul Konopka, and Peter Hoor
Atmos. Chem. Phys., 24, 13653–13679, https://doi.org/10.5194/acp-24-13653-2024,https://doi.org/10.5194/acp-24-13653-2024, 2024
Short summary
Kinematic properties of regions that can involve persistent contrails
Sina Maria Hofer and Klaus Martin Gierens
EGUsphere, https://doi.org/10.5194/egusphere-2024-3520,https://doi.org/10.5194/egusphere-2024-3520, 2024
Short summary

Cited articles

Akritidis, D., Zanis, P., Pytharoulis, I., Mavrakis, A., and Karacostas, T.: A deep stratospheric intrusion event down to the earth's surface of the megacity of Athens, Meteorol. Atmos. Phys., 109, 9–18, 2010. 
Akritidis, D., Katragkou, E., Zanis, P., Pytharoulis, I., Melas, D., Flemming, J., Inness, A., Clark, H., Plu, M., and Eskes, H.: A deep stratosphere-to-troposphere ozone transport event over Europe simulated in CAMS global and regional forecast systems: analysis and evaluation, Atmos. Chem. Phys., 18, 15515==15534, https://doi.org/10.5194/acp-18-15515-2018, 2018. 
Baldauf, M., Seifert, A., Förstner, J., Majewski, D., and Raschendorfer, M.: Operational convective-scale numerical weather prediction with the COSMO model: Description and sensitivities, Mon. Weather Rev., 139, 3887–3905, https://doi.org/10.1175/MWR-D-10-05013.1, 2011. 
Beekmann, M., Ancellet, G., Blonsky, S., De Muer, D., Ebel, A., Elbern, H., Hendricks, J., Kowol, J., Mancier, C., Sladkovic, R., Smit, H. G. J., Speth, P., Trickl, T., and Van Haver, P.: Regional and global tropopause fold occurrence and related ozone flux across the tropopause, J. Atmos. Chem., 28, 29–44, 1997. 
Bott, A.: A positive definite advection scheme obtained by nonlinear renormalization of the advective fluxes, Mon. Weather Rev., 117, 1006–1015, 1989. 
Download
Short summary
Upper-level fronts are often associated with the rapid transport of stratospheric air to the lower troposphere, leading to significantly enhanced ozone concentrations. This paper considers the multi-scale nature that is needed to bring stratospheric air down to the surface. The final transport step to the surface can be related to frontal zones and the associated vertical winds or to near-horizontal tracer transport followed by entrainment into a growing planetary boundary layer.
Share
Altmetrics
Final-revised paper
Preprint