Results 31 to 40 of about 1,473,362 (278)

Planetary-Wave-Induced Transport in the Stratosphere [PDF]

open access: yesJournal of the Atmospheric Sciences, 2003
In the stratosphere, chemical tracers are drawn systematically from the equator to the pole. This observed Brewer–Dobson circulation is driven by wave drag, which in the stratosphere arises mainly from the breaking and dissipation of planetary-scale Rossby waves. While the overall sense of the circulation follows from fundamental physical principles, a
Pendlebury, Diane, Shepherd, Theodore G.
openaire   +2 more sources

Stratospheric Decadal Changes Simulated with the MUAM during Decembers at the End of the 20th Century

open access: yesGaoyuan qixiang, 2023
Stratospheric climate change is an important part of global change.Observational and modeling studies disclosed that the stratosphere had shown in general a cooling trend during around the last 20 years of the 20th century.Ozone depletion is believed to ...
Renqiang LIU, Jihong XIE, Ying LI
doaj   +1 more source

Vertical motion of ionization induced by the linear interaction of tides with planetary waves [PDF]

open access: yesAnnales Geophysicae, 2003
Experimental findings have shown that travelling planetary waves modulate the occurrence of mid-latitude sporadic-E-layers. Using a simple quantitative model, we analyse the effects of the linear interaction between tides and planetary waves on ion
M. Voiculescu, M. Ignat
doaj   +1 more source

Evaluating Long-Term Variability of the Arctic Stratospheric Polar Vortex Simulated by CMIP6 Models

open access: yesRemote Sensing, 2022
The Arctic stratospheric polar vortex is a key component of the climate system, which has significant impacts on surface temperatures in the mid-latitudes and polar regions.
Siyi Zhao   +6 more
doaj   +1 more source

Inter-annual variations of 6.5-day planetary waves and their relations with QBO

open access: yesEarth and Planetary Physics, 2022
This paper studies inter-annual variations of 6.5-Day Waves (6.5DWs) observed at altitudes 20−110 km between 52°S−52°N latitudes during March 2002−January 2021, and how these variations were related to the equatorial stratospheric Quasi-Biennial ...
YingYing Huang   +3 more
doaj   +1 more source

Persistence of planetary wave type oscillations in the mid-latitude ionosphere

open access: yesAnnals of Geophysics, 2006
Planetary wave type oscillations have been observed in the lower and middle atmosphere but also in the ionosphere, including the ionospheric F2 layer. Here we deal with the oscillations in foF2 analysed for two Japanese and two US stations over a solar ...
P. Krizan, P. Sauli, J. Lastovicka
doaj   +1 more source

Planetary wave activity in the polar lower stratosphere [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
Temperature data from the COSMIC GPS-RO satellite constellation are used to study the distribution and variability of planetary wave activity in the low to mid- stratosphere (15–40 km) of the Arctic and Antarctic from September 2006 until March 2009 ...
S. P. Alexander, M. G. Shepherd
doaj  

On the dynamics of the spring seasonal transition in the two hemispheric high-latitude stratosphere

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2019
The seasonal transition is one of the main features of the atmospheric general circulation and is particularly manifest in the high-latitude stratosphere. To explore the dynamics of stratospheric seasonal transition in both hemispheres, the observational
Tongmei Wang   +4 more
doaj   +1 more source

Occurrence and Variations of Middle and Low Latitude Sporadic E Layer Investigated With Longitudinal and Latitudinal Chains of Ionosondes

open access: yesSpace Weather, 2021
A longitudinal chain and a latitudinal chain of ionosondes, located at Yakutsk (129.60°E, 62.00°N), Mohe (122.37°E, 53.50°N), Beijing (116.25°E, 40.25°N), Wuhan (114.61°E, 30.53°N), Sanya (109.42°E, 18.34°N), I‐Cheon (127.54°E, 37.14°N), San Vito (17.80 ...
Qiong Tang   +7 more
doaj   +1 more source

The Guiding Role of Rossby Wave Energy Dispersion Theory for Studying East Asian Monsoon System Dynamics

open access: yesAtmosphere, 2023
This paper is written to commemorate the 10th anniversary of academician Ye Duzheng (Yeh T.C.) pass away and his great contributions to the development of atmospheric dynamics.
Ronghui Huang   +3 more
doaj   +1 more source

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