scholarly journals Seasonal dependence of energetic electron precipitation: Evidence for a global role of lightning

2009 ◽  
Vol 36 (21) ◽  
Author(s):  
E. S. Gemelos ◽  
U. S. Inan ◽  
M. Walt ◽  
M. Parrot ◽  
J. A. Sauvaud
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Seasonal Dependence

The role of EEP forcing and background dynamics on the seasonal NO variability in the MLT region

2020 ◽  
Author(s):  
Christine Smith-Johnsen ◽  
Hilde Nesse Tyssøy ◽  
Daniel Marsh ◽  
Anne Smith
Keyword(s):  
Climate Model ◽  
Energetic Electron ◽  
Eddy Diffusion ◽  
Electron Precipitation ◽  
Ion Chemistry ◽  
D Region ◽  
E Region ◽  
Cluster Ion ◽  
Mlt Region

<p><a name="docs-internal-guid-803d1a38-7fff-fefe-52f7-d0a055a4547b"></a><a name="docs-internal-guid-b8d76d48-7fff-149a-6440-413c0de833ae"></a> <span>Energetic electron precipitation (EEP) ionizes the Earth's atmosphere and leads to production of nitric oxide (NO) from 50 to 150 km altitude. In this study we investigate the direct and indirect NO response to EEP using the Whole Atmosphere Community Climate Model (WACCM). In comparison to observations from SOFIE / AIM (Solar Occultation For Ice Experiment / Aeronomy of Ice in the Mesosphere), we find that EEP production of NO in the D-region is well simulated when both medium energy electron precipitation and negative and cluster ion chemistry is included in the model. However, the main EEP production of NO occurs in the E-region, and there the observed and modeled production differ. This discrepancy impacts also the D-region, and is seasonally dependent with the highest underestimate of D-region NO occuring during winter. The modeled transport across the mesopause during winter is generally weak, but strengthens with increased gravity wave activity. Increased eddy diffusion, increases NO at all altitudes through the polar MLT region</span></p>

scholarly journals The Role of Localized Compressional Ultra-low Frequency Waves in Energetic Electron Precipitation

2018 ◽  
Author(s):  
I. Jonathan Rae ◽  
Kyle R. Murphy ◽  
Clare E. J. Watt ◽  
Alexa J. Halford ◽  
Ian R. Mann ◽  
...  
Keyword(s):  
Energetic Electron ◽  
Low Frequency ◽  
Electron Precipitation ◽  
Low Frequency Waves

scholarly journals Strong localized variations of the low-altitude energetic electron fluxes in the evening sector near the plasmapause

1998 ◽  
Vol 16 (1) ◽  
pp. 25-33 ◽  
Author(s):  
E. E. Titova ◽  
T. A. Yahnina ◽  
A. G. Yahnin ◽  
B. B. Gvozdevsky ◽  
A. A. Lyubchich ◽  
...  
Keyword(s):  
Sharp Increase ◽  
Electron Flux ◽  
Particle Interaction ◽  
Energetic Electron ◽  
Recovery Phase ◽  
Electron Precipitation ◽  
Statistical Characteristics ◽  
Evening Sector ◽  
Proton Precipitation ◽  
Low Altitude

Abstract. Specific type of energetic electron precipitation accompanied by a sharp increase in trapped energetic electron flux are found in the data obtained from low-altitude NOAA satellites. These strongly localized variations of the trapped and precipitated energetic electron flux have been observed in the evening sector near the plasmapause during recovery phase of magnetic storms. Statistical characteristics of these structures as well as the results of comparison with proton precipitation are described. We demonstrate the spatial coincidence of localized electron precipitation with cold plasma gradient and whistler wave intensification measured on board the DE-1 and Aureol-3 satellites. A simultaneous localized sharp increase in both trapped and precipitating electron flux could be a result of significant pitch-angle isotropization of drifting electrons due to their interaction via cyclotron instability with the region of sharp increase in background plasma density.Key words. Ionosphere (particle precipitation; wave-particle interaction) Magnetospheric Physics (plasmasphere)

scholarly journals ULF modulation of energetic electron precipitation observed by VLF/LF radio propagation

2020 ◽  
Vol 2020 (372) ◽  
pp. 29-40
Author(s):  
Takuya Miyashita ◽  
Hiroyo Ohya ◽  
Fuminori Tsuchiya ◽  
Asuka Hirai ◽  
Mitsunori Ozaki ◽  
...  
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Radio Propagation

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

2012 ◽  
Vol 39 (21) ◽  
pp. n/a-n/a ◽  
Author(s):  
M. Daae ◽  
P. Espy ◽  
H. Nesse Tyssøy ◽  
D. Newnham ◽  
J. Stadsnes ◽  
...  
Keyword(s):  
Geomagnetic Storm ◽  
Energetic Electron ◽  
Electron Precipitation ◽  
Night Time

scholarly journals New conjunctive CubeSat and balloon measurements to quantify rapid energetic electron precipitation

2013 ◽  
Vol 40 (22) ◽  
pp. 5833-5837 ◽  
Author(s):  
L. W. Blum ◽  
Q. Schiller ◽  
X. Li ◽  
R. Millan ◽  
A. Halford ◽  
...  
Keyword(s):  
Energetic Electron ◽  
Electron Precipitation ◽  
Balloon Measurements
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