Results 21 to 30 of about 320 (144)

Mesosphere and lower thermosphere temperature anomalies during the 2002 Antarctic stratospheric warming event [PDF]

Annales Geophysicae, 2010
We present kinetic temperatures at ~87 km and ~94 km altitudes inferred from OH (6,2) and O2 At(0,1) airglow observations, respectively, at South Pole (90° S), Antarctica in the austral winter of 2002.
S. M. I. Azeem, S. M. I. Azeem, E. R. Talaat, G. G. Sivjee, J.-H. Yee   +4 more
doaj   +1 more source

Ozone Changes Due To Sudden Stratospheric Warming‐Induced Variations in the Intensity of Brewer‐Dobson Circulation: A Composite Analysis Using Observations and Chemical‐Transport Model

Geophysical Research Letters, 2023
We quantify the changes in the intensity of Brewer‐Dobson Circulation (BDC) during sudden stratospheric warming (SSW) and its impact on the tropical stratospheric thermal structure and ozone distribution by composite analysis using observations and a ...
Venugopal Veenus, Siddarth Shankar Das, Liji M. David   +2 more
doaj   +1 more source

Westward Acceleration of Tropical Stratopause Zonal Winds During Major Sudden Stratospheric Warming Events

Geophysical Research Letters, 2020
The tropical Mesosphere‐Lower Thermosphere‐Ionosphere system is found to show significant variabilities during Sudden Stratospheric Warming (SSW) events.
N. Koushik, Karanam Kishore Kumar, Tarique A. Siddiqui   +2 more
doaj   +1 more source

Influence of January 2009 stratospheric warming on HF radio wave propagation in the low-latitude ionosphere

Solar-Terrestrial Physics, 2016
We have considered the influence of the January 23–27, 2009 sudden stratospheric warming (SSW) event on HF radio wave propagation in the equatorial ionosphere. This event took place during extremely low solar and geomagnetic activity.
Kotova D.S., Klimenko M.V., Klimenko V.V., Zakharov V.E., Bessarab F.S., Korenkov Yu.N.   +5 more
doaj   +1 more source

Response of Total Column Ozone at High Latitudes to Sudden Stratospheric Warmings

Atmosphere, 2023
The total column ozone (TCO) at northern high latitudes is increased over a course of 1–2 months after a major sudden stratospheric warming as a consequence of enhanced ozone eddy transport and diffusive ozone fluxes.
Klemens Hocke, Eric Sauvageat, Leonie Bernet   +2 more
doaj   +1 more source

Relation between stratospheric sudden warming and the lunar effect on the equatorial electrojet based on Huancayo recordings [PDF]

Annales Geophysicae, 2015
It has been known for many decades that the lunar tidal influence in the equatorial electrojet (EEJ) is noticeably enhanced during Northern Hemisphere winters.
T. A. Siddiqui, T. A. Siddiqui, H. Lühr, C. Stolle, C. Stolle, J. Park, J. Park   +6 more
doaj   +1 more source

Multi-Year Rayleigh Lidar Temperature Measurement of the Polar Middle Atmosphere at Chatanika [PDF]

EPJ Web of Conferences
We present Rayleigh density temperature lidar temperature measurements of the stratosphere and mesosphere that extends over 87 nights from September 2018 to April 2022 made at Chatanika, Alaska (65°N, 147°W).
Das Satyaki, Collins Richard, Li Jintai, Harvey V. Lynn, Thurairajah Brentha   +4 more
doaj   +1 more source

Impact of the Pacific sector sea ice loss on the sudden stratospheric warming characteristics

npj Climate and Atmospheric Science, 2022
The atmospheric response to Arctic sea ice loss remains a subject of much debate. Most studies have focused on the sea ice retreat in the Barents-Kara Seas and its troposphere-stratosphere influence.
Jiarong Zhang, Yvan J. Orsolini, Varavut Limpasuvan, Jinro Ukita   +3 more
doaj   +1 more source

Evolution of observed ozone, trace gases, and meteorological variables over Arrival Heights, Antarctica (77.8°S, 166.7°E) during the 2019 Antarctic stratospheric sudden warming

Tellus: Series B, Chemical and Physical Meteorology, 2021
We use ground-based spectroscopic remote sensing measurements of the stratospheric trace gases O3, HCl, ClO, BrO, HNO3, NO2, OClO, ClONO2, N2O and HF, along with radiosonde profiles of temperature to track the springtime development of the 2019 ozone ...
Dan Smale, Susan E. Strahan, Richard Querel, Udo Frieß, Gerald E. Nedoluha, Sylvia E. Nichol, John Robinson, Ian Boyd, Michael Kotkamp, R. Michael Gomez, Mark Murphy, Hue Tran, Jamie McGaw   +12 more
doaj   +1 more source

Investigation of vertical wavenumber spectra during sudden stratospheric warming (SSW) events over the Indian region

Remote Sensing Letters, 2019
The vertical wavenumber (VWN) characteristics during sudden stratospheric warming (SSW) events (2003–2016) is investigated for the first time using temperature observation of Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) on-board Thermosphere Ionosphere Mesosphere Energetics Dynamics (TIMED) satellite (for the altitude range of
Priyanka Ghosh, Som Sharma, Kamran Ansari   +2 more
openaire   +1 more source