Results 31 to 40 of about 13,490 (260)

Dynamics of Polar Vortex Crystallization

Physical Review Letters
3 ...
S. Rijal, Y. Nahas, S. Prokhorenko, L. Bellaiche   +3 more
openaire   +3 more sources

Applications of point vortex equilibria: blocking events and the stability of the polar vortex [PDF]

Tellus: Series A, Dynamic Meteorology and Oceanography, 2015
The present study investigates non-linear dynamics of atmospheric flow phenomena on different scales as interactions of vortices. Thereby, we apply the idealised, two-dimensional concept of point vortices considering two important issues in atmospheric ...
Annette Müller, Peter Névir, Lisa Schielicke, Mirjam Hirt, Joscha Pueltz, Isabell Sonntag   +5 more
doaj   +1 more source

Adding value to extended-range forecasts in northern Europe by statistical post-processing using stratospheric observations [PDF]

Atmospheric Chemistry and Physics, 2020
The strength of the stratospheric polar vortex influences the surface weather in the Northern Hemisphere in winter; a weaker (stronger) than average stratospheric polar vortex is connected to negative (positive) Arctic Oscillation (AO) and colder (warmer)
N. Korhonen, O. Hyvärinen, M. Kämäräinen, D. S. Richardson, H. Järvinen, H. Gregow   +5 more
doaj   +1 more source

Dynamics of Saturn's South Polar Vortex

Science, 2008
The camera onboard the Cassini spacecraft has allowed us to observe many of Saturn's cloud features. We present observations of Saturn's south polar vortex (SPV) showing that it shares some properties with terrestrial hurricanes: cyclonic circulation, warm central region (the eye) surrounded by a ring of high clouds (the eye wall), and convective ...
Dyudina, Ulyana A., Ingersoll, Andrew P., Ewald, Shawn P., Vasavada, Ashwin R., West, Robert A., Del Genio, Anthony D., Barbara, John M., Porco, Carolyn C., Achterberg, Richard K., Flasar, F. Michael, Simon-Miller, Amy A., Fletcher, Leigh N.   +11 more
openaire   +3 more sources

The Delayed Response of the Troposphere‐Stratosphere‐Mesosphere Coupling to the 2019 Southern SSW

Geophysical Research Letters, 2022
A strong Southern Hemisphere (SH) sudden stratospheric warming event occurred in September 2019 and significantly weakened the stratospheric polar vortex. Due to the positive zonal wind anomalies in the troposphere, the barotropic/baroclinic instability,
Chengyun Yang, Tao Li, Dexin Lai, Xinyue Wang, Xianghui Xue, Xiankang Dou   +5 more
doaj   +1 more source

Middle atmospheric water vapour and dynamics in the vicinity of the polar vortex during the Hygrosonde-2 campaign [PDF]

Atmospheric Chemistry and Physics, 2009
The Hygrosonde-2 campaign took place on 16 December 2001 at Esrange/Sweden (68° N, 21° E) with the aim to investigate the small scale distribution of water vapour in the middle atmosphere in the vicinity of the Arctic polar vortex.
S. Lossow, M. Khaplanov, J. Gumbel, J. Stegman, G. Witt, P. Dalin, S. Kirkwood, F. J. Schmidlin, K. H. Fricke, U. Blum   +9 more
doaj  

The Stability of Mars’s Annular Polar Vortex

Journal of the Atmospheric Sciences, 2017
Abstract The Martian polar atmosphere is known to have a persistent local minimum in potential vorticity (PV) near the winter pole, with a region of high PV encircling it. This finding is surprising, since an isolated band of PV is barotropically unstable, a result going back to Rayleigh.
Seviour, William J.M., Waugh, Darryn W., Scott, Richard K.   +2 more
openaire   +3 more sources

A multi-scale comparison of polar vortices on Earth, Mars, Titan, and Venus

地球与行星物理论评
Although previous studies have analyzed the unique structural characteristics of the polar vortices on Earth, Venus, Mars, and Titan, the understanding of the polar vortices on Venus and Titan is primarily based on small-scale case studies due to the ...
Zheng Sheng, Gangyao Wu, Jie Zhang, Xiaohua Yang   +3 more
doaj   +1 more source

ZW4864‐mediated inhibition of the β‐catenin/BCL9/BCL9L complex reveals therapeutic potential in bladder cancer

Molecular Oncology, EarlyView.
BCL9 and BCL9L drive bladder cancer progression by enhancing β‐catenin signaling, promoting proliferation, migration, invasion, and organoid growth. Genetic depletion of BCL9(L) suppresses malignant phenotypes, while pharmacological disruption of the β‐catenin/BCL9(L) complex with ZW4864 inhibits canonical Wnt signaling and tumor‐associated cellular ...
Roland Kotolloshi, Mandy Berndt‐Paetz, Eileen Lerner, Gregoire Najjar, Anca Azoitei, Krishna Pal Singh, Shailendra Kumar Gupta, Olaf Wolkenhauer, Cagatay Günes, Otmar Huber, Marc‐Oliver Grimm, Daniel Steinbach   +11 more
wiley   +1 more source

Vortex erosion in a shallow water model of the polar vortex

Dynamics of Atmospheres and Oceans, 2017
Abstract The erosion of a model stratospheric polar vortex in response to bottom boundary forcing is investigated numerically. Stripping of filaments of air from the polar vortex has been implicated in the occurrence of stratospheric sudden warmings (SSWs) but it is not understood in detail what factors determine the rate and amount of stripping ...
Beaumont, R, Kwasniok, F, Thuburn, J
openaire   +2 more sources