Results 121 to 130 of about 8,237 (222)

Impact of September 2019 Antarctic Sudden Stratospheric Warming on Mid-Latitude Ionosphere and Thermosphere Over North America and Europe. [PDF]

Geophys Res Lett, 2021
Goncharenko LP, Harvey VL, Greer KR, Zhang SR, Coster AJ, Paxton LJ.   +5 more
europepmc   +1 more source

September 2019 Antarctic sudden stratospheric warming

, 2020
An exceptionally strong stationary planetary wave with Zonal Wavenumber 1 led to a sudden stratospheric warming (SSW) in the Southern Hemisphere in September 2019. Ionospheric data from European Space Agency's Swarm satellite constellation mission show prominent 6-day variations in the dayside low-latitude region at this time, which can be attributed ...
Yamazaki, Yosuke (Dr.), Wendt, Vivien (Dr. rer. nat.), Miyoshi, Y., Stolle, Claudia (Prof. Dr.), Siddiqui, Tarique Adnan (M. Sc.), Kervalishvili, Guram N. (Dr.), Laštovička, Jan, Kozubek, M., Ward, W., Themens, D. R., Kristoffersen, S., Alken, Patrick   +11 more
openaire   +3 more sources

On possible interactions between upper and lower atmosphere [PDF]

Geomagnetic data was compared with data on tropospheric and stratospheric circulation characteristics; a statistically significant shrinking was found in areal extent of the stratospheric vortex from the third to the eighth day following a 'geomagnetic ...
Macdonald, B. C., Reiter, E. R.
core   +1 more source

Observation of mesospheric air inside the arctic stratospheric polar vortex in early 2003 [PDF]

, 2005
During several balloon flights inside the Arctic polar vortex in early 2003, unusual trace gas distributions were observed, which indicate a strong influence of mesospheric air in the stratosphere.
A. Engel, G. Wetzel, H. Bönisch, H. Oelhaf, H.-P. Haase, H.-P. Haase, I. Levin, K. Grunow, M. Pirre, N. Huret, T. Möbius, T. Reddmann, T. Wetter, U. Schmidt   +13 more
core   +3 more sources

A Mechanism Involving Solar Ultraviolet Variations for Modulating the Interannual Climatology of the Middle Atmosphere [PDF]

, 1990
In years of low solar activity, free traveling wave modes in the upper stratosphere are dominated by atmospheric normal modes such as the 16-day wave. However, within a 4-year interval centered on the 1980 to 1981 solar maximum, cross-spectral analyses ...
Hood, L. L., Jirikowic, J. L.
core   +1 more source

Possible dynamical mechanisms for the Martian polar warming phenomenon [PDF]

The research performed under NASA contract NAGW-727 falls into three major categories, i.e., dynamical modeling of the Martian polar warming phenomenon, studies of dust and water transport associated with a Martian polar warming, and studies of the ...
Barnes, Jeffrey R.
core   +1 more source

Stratospheric circulation studies based on Tiros 7, 15-micron data Final report [PDF]

Stratospheric temperature distribution data based on Tiros 7 radiometer ...
Belmont, A. D., Nicholas, G. W., Shen, W. C.   +2 more
core   +1 more source

Mechanisms Underlying the Changes in Sporadic E Layers During Sudden Stratospheric Warming

Atmosphere
During sudden stratospheric warming (SSW) events, significant modifications occur, not only in the neutral atmosphere, but also in the ionosphere. Specifically, sporadic E layers in the mesosphere and lower thermosphere regions significantly disrupt ...
Haiyang Zheng, Hanxian Fang, Chao Xiao, Hongtao Huang, Die Duan, Ganming Ren   +5 more
doaj   +1 more source

Energetics of a sudden stratospheric warming simulated with a three-dimensional, spectral, quasi-geostrophic model [PDF]

The energetics of a three dimensional, quasi-geostrophic simulation of a sudden stratospheric warming which developed spontaneously during an annual cycle simulation are described.
Grose, W. L., Haggard, K. V.
core   +1 more source

Predicting the Downward and Surface Influence of the February 2018 and January 2019 Sudden Stratospheric Warming Events in Subseasonal to Seasonal (S2S) Models. [PDF]

J Geophys Res Atmos, 2020
Rao J, Garfinkel CI, White IP.
europepmc   +1 more source