Results 21 to 30 of about 713 (180)

Identifying Perturbations That Tipped the Stratosphere Into a Sudden Warming During January 2013

Geophysical Research Letters, 2023
We present a new methodology demonstrating that specific small‐magnitude regional perturbations can cause large systematic responses in subseasonal predictions.
Chris Kent, Adam A. Scaife, William J. M. Seviour, Nick Dunstone, Doug Smith, Kerry Smout‐Day   +5 more
doaj   +1 more source

Enhanced Polar Vortex Predictability Following Sudden Stratospheric Warming Events

Geophysical Research Letters, 2023
Sudden stratospheric warming (SSW) events can form a window of forecast opportunity for polar vortex predictions on subseasonal‐to‐seasonal time scales.
Philip Rupp, Jonas Spaeth, Hella Garny, Thomas Birner   +3 more
doaj   +1 more source

Observations of Pole-to-Pole, Stratosphere-to-Ionosphere Connection

Frontiers in Astronomy and Space Sciences, 2022
The behavior of the Earth’s middle atmosphere and ionosphere is governed by multiple processes resulting not only from downward energy transfer from the Sun and magnetosphere but also upward energy transfer from terrestrial weather.
L. P. Goncharenko, V. L. Harvey, V. L. Harvey, C. E. Randall, C. E. Randall, A. J. Coster, S.-R. Zhang, A. Zalizovski, A. Zalizovski, A. Zalizovski, I. Galkin, M. Spraggs   +11 more
doaj   +1 more source

Observed response of stratospheric and mesospheric composition to sudden stratospheric warmings [PDF]

Journal of Atmospheric and Solar-Terrestrial Physics, 2019
Abstract In this study we investigate and quantify the statistical changes that occur in the stratosphere and mesosphere during 37 sudden stratospheric warming (SSW) events from 1989 to 2016. We consider changes in the in-situ ozonesonde observations of the stratosphere from four sites in the northern hemisphere (Ny-Alesund, Sodankyla, Lerwick, and ...
Denton, M.H., Kivi, R., Ulich, T., Rodger, C.J., Clilverd, Mark, Denton, J.S., Lester, M.   +6 more
openaire   +2 more sources

Influence of sudden stratospheric warmings on tropospheric winds

Meteorologische Zeitschrift, 2011
The influence of changes in the zonal mean stratospheric potential vorticity, associated with sudden stratospheric warmings, on the zonal mean zonal wind in the troposphere is investigated by piecewise potential vorticity inversion.
Yvonne Hinssen, Aarnout van Delden, Theo Opsteegh   +2 more
doaj   +1 more source

Gravity waves excited during a minor sudden stratospheric warming [PDF]

Atmospheric Chemistry and Physics, 2018
An exceptionally deep upper-air sounding launched from Kiruna airport (67.82° N, 20.33° E) on 30 January 2016 stimulated the current investigation of internal gravity waves excited during a minor sudden stratospheric warming (SSW) in the
A. Dörnbrack, S. Gisinger, N. Kaifler, T. C. Portele, M. Bramberger, M. Rapp, M. Rapp, M. Gerding, J. Söder, N. Žagar, D. Jelić   +10 more
doaj   +1 more source

Stratospheric wave driving events as an alternative to sudden stratospheric warmings [PDF]

Weather and Climate Dynamics, 2022
Natural variations in the strength of the northern stratospheric polar vortex, so-called polar vortex events, help to improve subseasonal-to-seasonal (S2S) predictions of winter climate.
T. Reichler, M. Jucker, M. Jucker
doaj   +1 more source

Changes in Stratospheric Transport and Mixing During Sudden Stratospheric Warmings [PDF]

Journal of Geophysical Research: Atmospheres, 2018
AbstractThe extreme disruptions of the wintertime stratospheric circulation during sudden stratospheric warmings (SSW) have large effects on tracer concentrations through alterations in transport. This study analyzes the changes in residual circulation and isentropic mixing associated with SSWs, by performing composites using reanalysis (European ...
A. de la Cámara, M. Abalos, P. Hitchcock   +2 more
openaire   +5 more sources

Influence of the sudden stratospheric warming on quasi-2-day waves [PDF]

Atmospheric Chemistry and Physics, 2016
The influence of the sudden stratospheric warming (SSW) on a quasi-2-day wave (QTDW) with westward zonal wave number 3 (W3) is investigated using the Thermosphere–Ionosphere–Mesosphere Electrodynamics General Circulation Model (TIME-GCM).
S.-Y. Gu, S.-Y. Gu, H.-L. Liu, X. Dou, X. Dou, T. Li, T. Li   +6 more
doaj   +1 more source

Stratospheric influence on North Atlantic marine cold air outbreaks following sudden stratospheric warming events [PDF]

Weather and Climate Dynamics, 2020
Marine cold air outbreaks (MCAOs) in the northeastern North Atlantic occur due to the advection of extremely cold air over an ice-free ocean. MCAOs are associated with a range of severe weather phenomena, such as polar lows, strong surface winds and ...
H. Afargan-Gerstman, I. Polkova, L. Papritz, P. Ruggieri, P. Ruggieri, M. P. King, P. J. Athanasiadis, J. Baehr, D. I. V. Domeisen   +8 more
doaj   +1 more source