Results 31 to 40 of about 527 (105)

Mesospheric Ozone Depletion Depending on Different Levels of Geomagnetic Disturbances and Seasons

open access: yesAtmosphere, 2023
Energetic electron precipitation (EEP) into the atmosphere are considered to play an important role in the natural forcing of the ozone variability and dynamics of the middle atmosphere during magnetospheric and geomagnetic disturbances.
Irina Mironova   +2 more
doaj   +1 more source

Effects of energetic electron precipitation on the northern wintertime atmosphere [PDF]

open access: yes, 2022
This thesis studies the effect of energetic electron precipitation (EEP) on the Earth’s atmosphere, focusing on the northern wintertime stratosphere. EEP is driven by the interaction between the Earth’s magnetosphere and solar wind, a plasma stream from ...
Salminen, Antti
core   +1 more source

Comparing the effects of solar-related and terrestrial drivers on the northern polar vortex

open access: yesJournal of Space Weather and Space Climate, 2020
Northern polar vortex experiences significant variability during Arctic winter. Solar activity contributes to this variability via solar irradiance and energetic particle precipitation. Recent studies have found that energetic electron precipitation (EEP)
Salminen Antti   +3 more
doaj   +1 more source

Polar Middle Atmospheric Responses to Medium Energy Electron (MEE) Precipitation Using Numerical Model Simulations

open access: yesAtmosphere, 2021
Energetic particle precipitation (EPP) is known to be an important source of chemical changes in the polar middle atmosphere in winter. Recent modeling studies further suggest that chemical changes induced by EPP can also cause dynamic changes in the ...
Ji-Hee Lee   +7 more
doaj   +1 more source

Improving ionospheric predictability requires accurate simulation of the mesospheric polar vortex

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The mesospheric polar vortex (MPV) plays a critical role in coupling the atmosphere-ionosphere system, so its accurate simulation is imperative for robust predictions of the thermosphere and ionosphere.
V. Lynn Harvey   +22 more
doaj   +1 more source

Stratospheric X‐Rays Detected at Midlatitudes With a Miniaturized Balloon‐Borne Microscintillator‐PiN Diode System

open access: yesSpace Weather, 2021
A miniaturized scintillator (“microscintillator”), was flown on a meteorological radiosonde to observe energetic particles in the lower atmosphere.
K. L. Aplin, G. J. Marlton, V. Race
doaj   +1 more source

Determining Latitudinal Extent of Energetic Electron Precipitation Using MEPED On-Board NOAA/POES [PDF]

open access: yes, 2022
Energetic Electron Precipitation (EEP) from the plasma sheet and the radiation belts ionizes the polar lower thermosphere and mesosphere. EEP increases the production of NOx and HOx, which will catalytically destroy ozone, an important element of ...
Babu, Eldho Midhun   +6 more
core   +1 more source

Energetic outer radiation belt electron precipitation during recurrent solar activity [PDF]

open access: yes, 2010
Transmissions from three U.S. VLF (very low frequency) transmitters were received at Churchill, Canada, during an event study in May to November, 2007. This period spans four cycles of recurrent geomagnetic activity spaced similar to 27 days apart, with ...
Breen, Paul   +8 more
core   +1 more source

Substorm-induced energetic electron precipitation:impact on atmospheric chemistry [PDF]

open access: yes, 2015
Magnetospheric substorms drive energetic electron precipitation into the Earth's atmosphere. We use the output from a substorm model to describe electron precipitation forcing of the atmosphere during an active substorm period in April–May 2007.
Andersson, M. E.   +6 more
core   +3 more sources

The effect of energetic electron precipitation on middle mesospheric night-time ozone during and after a moderate geomagnetic storm [PDF]

open access: yes, 2012
Using a ground-based microwave radiometer at Troll Station, Antarctica (72°S, 2.5°E, L = 4.76), we have observed a decrease of 20–70% in the mesospheric ozone, coincident with increased nitric oxide, between 60 km and 75 km altitude associated with ...
Daae, M.   +5 more
core   +1 more source

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