Results 81 to 90 of about 516,711 (190)

Optimizing the Definition of a Sudden Stratospheric Warming

Journal of Climate, 2018
AbstractVarious criteria exist for determining the occurrence of a major sudden stratospheric warming (SSW), but the most common is based on the reversal of the climatological westerly zonal-mean zonal winds at 60° latitude and 10 hPa in the winter stratosphere. This definition was established at a time when observations of the stratosphere were sparse.
Amy H. Butler, Edwin P. Gerber
openaire   +1 more source

Polar Vortex Disruptions by High Latitude Ocean Warming

Geophysical Research Letters
Mid‐latitude extreme cold outbreaks are associated with disruptions of the polar vortex, which often happen abruptly in connection to a sudden stratospheric warming.
Mostafa E. Hamouda, Alice Portal, Claudia Pasquero   +2 more
doaj   +1 more source

Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons

Advances in Meteorology, 2015
Fifty-two Stratospheric sudden warming (SSW) events that occurred from 1957 to 2002 were analyzed based on the 40-year European Centre for Medium-Range Weather Forecasts Reanalysis dataset.
Quanliang Chen, Luyang Xu, Hongke Cai
doaj   +1 more source

FMS model settings for: Lower-stratospheric control of the frequency of sudden stratospheric warming events

, 2018
<p>Modifications made to the FMS model (https://www.gfdl.noaa.gov/fms/) in order to obtain the numerical simulations used in the article "Lower-stratospheric control of the frequency of sudden stratospheric warming events"</p> < ...
Patrick Martineau, Patrick Martineau (8264928)   +1 more
core   +1 more source

The Sudden Stratospheric Warming Events in the Antarctic in 2024

Geophysical Research Letters
In July and August 2024, two consecutive stratospheric sudden warming (SSW) events (termed SW07 and SW08) occurred over Antarctic, both featuring a rapid 17°C temperature rise at 10 hPa and significant stratospheric polar vortex (SPV) deceleration.
Yucheng Zi, Zhenxia Long, Jinyu Sheng, Gaopeng Lu, Will Perrie, Ziniu Xiao   +5 more
doaj   +1 more source

Dynamical Precursors for Statistical Prediction of Stratospheric Sudden Warming Events

Geophysical Research Letters, 2018
This work explores dynamical arguments for statistical prediction of stratospheric sudden warming events (SSWs). Based on climate model output, it focuses on two predictors, upward wave activity in the lower stratosphere and meridional potential ...
M. Jucker, T. Reichler
doaj   +1 more source

Planetary Wave Activity During 2019 Sudden Stratospheric Warming Event Revealed by ERA5 Reanalysis Data

Remote Sensing
The minor sudden stratospheric warming (SSW) event and the relevant planetary waves are investigated by analyzing ERA5 reanalysis data from July to December 2019.
Yushun Yang, Haiyan Li
doaj   +1 more source

Equatorial ionization anomaly response to lunar phase and stratospheric sudden warming. [PDF]

Sci Rep, 2021
Wu TY, Liu JY, Chang LC, Lin CH, Chiu YC.   +4 more
europepmc   +1 more source

Bidirectional infrasonic ducts associated with sudden stratospheric warming events

, 2014
In January 2011, the state of the polar vortex in the midlatitudes changed significantly due to a minor sudden stratospheric warming event. As a result, a bidirectional duct for infrasound propagation developed in the middle atmosphere that persisted for
Assink, J.D. (author), Evers, L.G. (author), R. Waxler, Smets, P.S.M., P. Smets, Waxler, R. (author), Assink, J.D., Smets, P.S.M. (author), Waxler, R., Evers, L.G., J. D. Assink, L. G. Evers   +11 more
core   +2 more sources

Statistical analysis of Iran\'s heavy rains during sudden stratospheric warming

تحقیقات کاربردی علوم جغرافیایی
sudden stratospheric warming has an obvious effect on the Earth's surface climate. In this research, the changes in precipitation during the occurrence of this phenomenon have been investigated.
Sorayya Derikvand, behrooz nasiri, hooshang ghaemi, mostafa karampoor, mohammad moradi   +4 more
doaj