Articles | Volume 2, issue 1
https://doi.org/10.5194/wcd-2-37-2021
https://doi.org/10.5194/wcd-2-37-2021
Research article
 | 
18 Jan 2021
Research article |  | 18 Jan 2021

Mid-level convection in a warm conveyor belt accelerates the jet stream

Nicolas Blanchard, Florian Pantillon, Jean-Pierre Chaboureau, and Julien Delanoë

Related authors

Organization of convective ascents in a warm conveyor belt
Nicolas Blanchard, Florian Pantillon, Jean-Pierre Chaboureau, and Julien Delanoë
Weather Clim. Dynam., 1, 617–634, https://doi.org/10.5194/wcd-1-617-2020,https://doi.org/10.5194/wcd-1-617-2020, 2020
Short summary

Related subject area

Dynamical processes in midlatitudes
Linking Gulf Stream air–sea interactions to the exceptional blocking episode in February 2019: a Lagrangian perspective
Marta Wenta, Christian M. Grams, Lukas Papritz, and Marc Federer
Weather Clim. Dynam., 5, 181–209, https://doi.org/10.5194/wcd-5-181-2024,https://doi.org/10.5194/wcd-5-181-2024, 2024
Short summary
Process-based classification of Mediterranean cyclones using potential vorticity
Yonatan Givon, Or Hess, Emmanouil Flaounas, Jennifer Louise Catto, Michael Sprenger, and Shira Raveh-Rubin
Weather Clim. Dynam., 5, 133–162, https://doi.org/10.5194/wcd-5-133-2024,https://doi.org/10.5194/wcd-5-133-2024, 2024
Short summary
The relation between Rossby wave-breaking events and low-level weather systems
Talia Tamarin-Brodsky and Nili Harnik
Weather Clim. Dynam., 5, 87–108, https://doi.org/10.5194/wcd-5-87-2024,https://doi.org/10.5194/wcd-5-87-2024, 2024
Short summary
Aquaplanet simulations with winter and summer hemispheres: model setup and circulation response to warming
Sebastian Schemm and Matthias Röthlisberger
Weather Clim. Dynam., 5, 43–63, https://doi.org/10.5194/wcd-5-43-2024,https://doi.org/10.5194/wcd-5-43-2024, 2024
Short summary
Seasonally dependent increases in subweekly temperature variability over Southern Hemisphere landmasses detected in multiple reanalyses
Patrick Martineau, Swadhin K. Behera, Masami Nonaka, Hisashi Nakamura, and Yu Kosaka
Weather Clim. Dynam., 5, 1–15, https://doi.org/10.5194/wcd-5-1-2024,https://doi.org/10.5194/wcd-5-1-2024, 2024
Short summary

Cited articles

Blanchard, N., Pantillon, F., Chaboureau, J.-P., and Delanoë, J.: Organization of convective ascents in a warm conveyor belt, Weather Clim. Dynam., 1, 617–634, https://doi.org/10.5194/wcd-1-617-2020, 2020. a, b, c, d, e, f, g, h, i, j, k, l, m, n
Browning, K. A.: Mesoscale Aspects of Extratropical Cyclones: An Observational Perspective, in: The Life Cycles of Extratropical Cyclones, edited by, Shapiro, M. A. and Grønås S., American Meteorological Society, Boston, MA, 265–283, https://doi.org/10.1007/978-1-935704-09-6_18, 1999. a
Chagnon, J. M., Gray, S. L., and Methven, J.: Diabatic processes modifying potential vorticity in a North Atlantic cyclone, Q. J. Roy. Meteorol. Soc., 139, 1270–1282, https://doi.org/10.1002/qj.2037, 2013. a, b
Colella, P. and Woodward, P. R.: The Piecewise Parabolic Method (PPM) for gas-dynamical simulations, J. Comput. Phys., 54, 174–201, https://doi.org/10.1016/0021-9991(84)90143-8, 1984. a
Dauhut, T., Chaboureau, J.-P., Escobar, J., and Mascart, P.: Giga-LES of Hector the Convector and its two tallest updrafts up to the stratosphere, J. Atmos. Sci., 73, 5041–5060, https://doi.org/10.1175/JAS-D-16-0083.1, 2016. a
Download
Short summary
Rare aircraft observations in the warm conveyor belt outflow associated with an extratropical cyclone are complemented with convection-permitting simulations. They reveal a complex tropopause structure with two jet stream cores, from which one is reinforced by bands of negative potential vorticity. They show that negative potential vorticity takes its origin in mid-level convection, which indirectly accelerates the jet stream and, thus, may influence the downstream large-scale circulation.