Results 21 to 30 of about 527 (105)

Planetary Waves Controlling the Effect of Energetic Electron Precipitation on the Northern Polar Vortex [PDF]

Geophysical Research Letters, 2022
Energetic electron precipitation (EEP) forms ozone-depleting nitrogen and hydrogen oxides in the high-latitude middle and upper atmosphere, leading to ozone destruction and temperature enhancement that can strengthen the winter polar vortex.
Asikainen, Timo, Mursula, Kalevi, Salminen, Antti   +2 more
core   +3 more sources

Long-term determination of energetic electron precipitation into the atmosphere from AARDDVARK subionospheric VLF observations [PDF]

Journal of Geophysical Research: Space Physics, 2015
We analyze observations of subionospherically propagating very low frequency (VLF) radio waves to determine outer radiation belt energetic electron precipitation (EEP) flux magnitudes.
Clilverd, Mark A., Neal, Jason J., Raita, Tero, Rodger, Craig J., Thomson, Neil R., Ulich, Thomas   +5 more
core   +3 more sources

Energetic Electron Precipitation During Slot Region Filling Events [PDF]

Journal of Geophysical Research: Space Physics, 2023
The slot region marks the equatorward boundary of the energetic electron precipitation (EEP). There are, however, numerous reports where energetic electrons cross these boundaries and fill the slot region.
Babu, Eldho Midhun, Funke, B., Nesse, Hilde, Salice, Josephine Alessandra   +3 more
core   +3 more sources

Energetic Electron Precipitation From the Radiation Belts: Geomagnetic and Solar Wind Proxies for Precipitation Flux Magnitudes [PDF]

Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.
Previously the geomagnetic Ap index has been used as a proxy to produce empirical energetic electron precipitation (EEP) forcing representations suitable for incorporation into coupled-climate model runs.
Clilverd, Mark A., Crack, Malcolm, Hendry, Aaron T., Rodger, Craig J., Sauvaud, Jean-Andre   +4 more
core   +2 more sources

The high-energy tail of energetic electron precipitation: solar wind drivers and geomagnetic responses

Frontiers in Astronomy and Space Sciences
Compositional NOx changes caused by energetic electron precipitation (EEP) at a specific altitude and those co-dependent on vertical transport are referred to as the EEP direct and indirect effect, respectively.
Josephine Salice, Hilde Nesse, Noora Partamies, Emilia Kilpua, Andrew Kavanagh, Margot Decotte, Eldho Babu, Christine Smith-Johnsen   +7 more
doaj   +3 more sources

D-region impact area of energetic electron precipitation during pulsating aurora [PDF]

Annales Geophysicae, 2021
A total of 10 radars from the Super Dual Auroral Radar Network (SuperDARN) in Antarctica were used to estimate the spatial area over which energetic electron precipitation (EEP) impacts the D-region ionosphere during pulsating aurora (PsA) events. We use
E. Bland, F. Tesema, F. Tesema, N. Partamies, N. Partamies   +4 more
doaj   +1 more source

Mesospheric ionization during substorm growth phase

Journal of Space Weather and Space Climate, 2022
Many studies have been conducted about the impact of energetic charged particles on the atmosphere during geomagnetically active times, while quiet time effects are poorly understood. We identified two energetic electron precipitation (EEP) events during
Murase Kiyoka, Kataoka Ryuho, Nishiyama Takanori, Nishimura Koji, Hashimoto Taishi, Tanaka Yoshimasa, Kadokura Akira, Tomikawa Yoshihiro, Tsutsumi Masaki, Ogawa Yasunobu, Uchida Herbert Akihito, Sato Kaoru, Kasahara Satoshi, Mitani Takefumi, Yokota Shoichiro, Hori Tomoaki, Keika Kunihiro, Takashima Takeshi, Kasahara Yoshiya, Matsuda Shoya, Shoji Masafumi, Matsuoka Ayako, Shinohara Iku, Miyoshi Yoshizumi, Sato Tatsuhiko, Ebihara Yusuke, Tanaka Takashi   +26 more
doaj   +1 more source

Effects of enhanced downwelling of NO_x on Antarctic upper-stratospheric ozone in the 21st century [PDF]

Atmospheric Chemistry and Physics, 2021
Ozone is expected to fully recover from the chlorofluorocarbon (CFC) era by the end of the 21st century. Furthermore, because of anthropogenic climate change, a cooler stratosphere decelerates ozone loss reactions and is projected to lead to a super ...
V. Maliniemi, H. Nesse Tyssøy, C. Smith-Johnsen, P. Arsenovic, D. R. Marsh, D. R. Marsh   +5 more
doaj   +1 more source

Spatial extent of the energetic electron precipitation region during substorms

Frontiers in Astronomy and Space Sciences, 2022
The spatial coverage of the energetic electron precipitation (EEP) region during three substorms has been determined using a combination of ground-based instruments in North America.
Emma Bland, Tamás Bozóki, Tamás Bozóki, Noora Partamies, Noora Partamies   +4 more
doaj   +1 more source

Atmospheric Response to EEP during Geomagnetic Disturbances

Atmosphere, 2023
Energetic electron precipitation (EEP) is associated with solar activity and space weather and plays an important role in the Earth’s polar atmosphere.
Dmitry Grankin, Irina Mironova, Galina Bazilevskaya, Eugene Rozanov, Tatiana Egorova   +4 more
doaj   +1 more source