Results 91 to 100 of about 8,237 (222)

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

Do Eclipse‐Induced Thermospheric TADs Originate From Above or Below?

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Solar eclipses generate significant wave activity in the Earth's upper atmosphere. The source region of eclipse‐induced Traveling Atmospheric Disturbances (TADs) in the upper thermosphere—particularly the relative contributions of gravity waves from the thermosphere itself versus the lower atmosphere—remains unknown. Using the Whole Atmosphere
Yu Jiao, Jing Liu, Shuhan Li, Joseph M. McInerney, Jianyong Li, Yuyan Yang   +5 more
wiley   +1 more source

Agreement in late twentieth century Southern Hemisphere stratospheric temperature trends in observations and CCMVal-2, CMIP3 and CMIP5 models [PDF]

, 2013
We present a comparison of temperature trends using different satellite and radiosonde observations and climate (GCM) and chemistry-climate model (CCM) output, focusing on the role of photochemical ozone depletion in the Antarctic lower stratosphere ...
Butler, Amy, Calvo, Natalia, Haimberger, Leopold, Kushner, Paul, Marsh, Dan, Randel, William, Rosenlof, Karen, Young, Paul   +7 more
core   +2 more sources

Ground‐Based Microwave Measurements of ClO and O3 Over Scott Base, Antarctica

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract We present measurements from a new microwave instrument that has been deployed at Scott Base, Antarctica, primarily to measure ClO. The new instrument allows for the extension of the time series of lower stratospheric ClO measurements begun in 1996 at this site, while some of the technical improvements offer the possibility of making ...
Gerald E. Nedoluha, R. Michael Gomez, Ian Boyd, Helen Neal, Douglas R. Allen, Alan Parrish, Brian J. Connor, Michael Kotkamp, Kate McKenzie, Eric L. Fleming, Thomas F. Hanisco, Michelle L. Santee   +11 more
wiley   +1 more source

Dynamic Coupling of the Stratosphere With the Troposphere and Sudden Stratospheric Warmings [PDF]

Monthly Weather Review, 1973
Abstract Numerical time integrations of a nine-layer, quasi-geostrophic, highly truncated spectral model of the atmosphere are used to study tropospheric-stratospheric interaction with particular regard to sudden stratospheric warmings. The model is global, extends to 0.05 mb (71 km) with roughly 10-km resolution in the stratosphere, and includes an ...
openaire   +1 more source

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

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

What chance of a sudden stratospheric warming in the southern hemisphere?

Environmental Research Letters, 2020
Sudden stratospheric warmings (SSWs) are amongst the most dramatic events in the Earth’s atmosphere and they drive extreme surface weather conditions.
L Wang, S C Hardiman, P E Bett, R E Comer, C Kent, A A Scaife   +5 more
doaj   +1 more source

Stratwarm Effects in the Ionospheric D Region Wind Field [PDF]

, 1984
An analysis is made of the wind field structure in the strato-thermosphere over Eastern Siberia during the winter stratwarms of 1975-1977. It is found that coupling between dynamical processes in the stratosphere and lower thermosphere is effected ...
Vergasova, G. V.
core   +1 more source

Nonlinear stratospheric variability: multifractal detrended fluctuation analysis and singularity spectra

, 2016
Characterising the stratosphere as a turbulent system, temporal fluctuations often show different correlations for different time scales as well as intermittent behaviour that cannot be captured by a single scaling exponent.
Badin, Gualtiero, Domeisen, Daniela I. V.   +1 more
core   +1 more source