Impact of Increased Vertical Resolution in WACCM on the Climatology of Major Sudden Stratospheric Warmings

Autor: Víctor M. Chávez, Juan A. Añel, Rolando R. Garcia, Petr Šácha, Laura de la Torre

Publikováno v: Atmosphere, Vol 13, Iss 4, p 546 (2022)

Sudden stratospheric warmings (SSWs) are a major mode of variability of the winter stratosphere. In recent years, climate models have improved their ability to simulate SSWs. However, the representation of the frequency and temporal distribution of S

Externí odkaz: https://doaj.org/article/1197b1b59605442badd20c88afd28f2a

Quantification of gravity wave drag in ERA5 reanalysis

Autor: Zuzana Procházková, Petr Pišoft, Petr Šácha

Internal gravity waves (GWs) are a ubiquitous component of atmospheric dynamics, propagating both horizontally and vertically through the atmosphere, interacting with other flow components and affecting regional to large-scale dynamics. Due to the wi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1d8b7cffb51601b411b7b9f990e0e09
https://doi.org/10.5194/egusphere-egu23-4928

The impact of structural changes in the middle atmosphere on the Brewer-Dobson circulation

Autor: Radek Zajíček, Petr Šácha, Petr Pišoft, Roland Eichinger, Harald Rieder, Aleš Kuchař

Changes in atmospheric composition affect surface climate and alter atmospheric structure, dynamics, and transport, which in turn further affect the composition. In the middle atmosphere, the composition is influenced by the Brewer-Dobson circulation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af4f772616c8d220bd13d0ef794a492c
https://doi.org/10.5194/egusphere-egu23-4513

Observed and Modeled Mountain Waves from the Surface to the Mesosphere Near the Drake Passage

Autor: Christopher G. Kruse, M. Joan Alexander, Lars Hoffmann, Annelize van Niekerk, Inna Polichtchouk, Julio T. Bacmeister, Laura Holt, Riwal Plougonven, Petr Šácha, Corwin Wright, Kaoru Sato, Ryosuke Shibuya, Sonja Gisinger, Manfred Ern, Catrin I. Meyer, Olaf Stein

Publikováno v: Kruse, C, Alexander, M J, Hoffmann, L, van Niekerk, A, Polichtchouk, I, Bacmeister, J, Holt, L A, Plougonven, R, Sacha, P, Wright, C, Sato, K, Shibuya, R, Gisinger, S, Ern, M, Meyer, C & Stein, O 2022, ' Observed and Modeled Mountain Waves from the Surface to the Mesosphere Near the Drake Passage ', Journal of the Atmospheric Sciences, vol. 79, no. 4, pp. 909-932 . https://doi.org/10.1175/JAS-D-21-0252.1
Journal of the atmospheric sciences 79(4), 909–932 (2022). doi:10.1175/JAS-D-21-0252.1

Four state-of-the-science numerical weather prediction (NWP) models were used to perform mountain wave (MW)-resolving hindcasts over the Drake Passage of a 10-day period in 2010 with numerous observed MW cases. The Integrated Forecast System (IFS) an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49e07fa7098ffcc393b9cb83eab69f18
https://purehost.bath.ac.uk/ws/files/227738651/2021_12_JAS_KruseAlexanderHoffmannVanniekerkPolichtchoukBacmeisterHoltPlougonvenSachaWrightSatoShibuyaGisingerErnMeyerStein.pdf

On the intermittency of orographic gravity wave hotspots and its importance for middle atmosphere dynamics

Autor: Roland Eichinger, Christoph Jacobi, Harald E. Rieder, Ales Kuchar, Petr Šácha, Petr Pišoft

Publikováno v: Weather and Climate Dynamics, Vol 1, Pp 481-495 (2020)

When orographic gravity waves (OGWs) break, they dissipate their momentum and energy and thereby influence the thermal and dynamical structure of the atmosphere. This OGW forcing mainly takes place in the middle atmosphere. It is zonally asymmetric a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::159fad278b98f07f1f22411d56ec5b1f
https://doi.org/10.5194/wcd-1-481-2020