Ionospheric convection associated with discrete levels of particle precipitation

Foster, J. C.; Holt, J. M.; Musgrove, R. G.; Evans, David S.

doi:10.1029/gl013i007p00656

Cited by 280 publications

(183 citation statements)

References 7 publications

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“…Furthermore, the use of the statistical patterns means using average E field values for the computation of Joule heating, which may reduce the magnetospheric energy deposited at high latitudes by 30% [Codrescu et al, 1995]. For these reasons, the electric fields used in the simulations described in this paper are increased above the original model values of [Foster et al, 1986], by 30%.…”

Section: Fabry-perot Interferometer Experiments and Data Analysismentioning

confidence: 99%

Comparison of models and measurements at Millstone Hill during the January 24–26, 1993, minor storm interval

Buonsanto¹,

Codrescu²,

Emery³

et al. 1997

J. Geophys. Res.

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Section: Fabry-perot Interferometer Experiments and Data Analysismentioning

confidence: 99%

Comparison of models and measurements at Millstone Hill during the January 24–26, 1993, minor storm interval

Buonsanto¹,

Codrescu²,

Emery³

et al. 1997

J. Geophys. Res.

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“…Foster et al (1986) discuss the connection of outer belt electron precipitation with ionospheric convection at high latitude and present a precipitation index that quantifies the intensity and spatial extent of precipitations as a function of the convection electric field. Callis et al (1991) discuss the effects of relativistic electron precipitation in the D-region and long-term impact on stratospheric odd nitrogen levels.…”

Section: Sources Outside the Cavitymentioning

confidence: 99%

A Review of Low Frequency Electromagnetic Wave Phenomena Related to Tropospheric-Ionospheric Coupling Mechanisms

Simões¹,

Pfaff²,

Berthelier³

et al. 2011

Dynamic Coupling Between Earth’s Atmospheric and Plasma Environments

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Investigation of coupling mechanisms between the troposphere and the ionosphere requires a multidisciplinary approach involving several branches of atmospheric sciences, from meteorology, atmospheric chemistry, and fulminology to aeronomy, plasma physics, and space weather. In this work, we review low frequency electromagnetic wave propagation in the Earthionosphere cavity from a troposphere-ionosphere coupling perspective. We discuss electromagnetic wave generation, propagation, and resonance phenomena, considering atmospheric, ionospheric and magnetospheric sources, from lightning and transient luminous events at low altitude to Alfven waves and particle precipitation related to solar and magnetospheric processes. We review in situ ionospheric processes as well as surface and space weather phenomena that drive troposphere-ionosphere dynamics. Effects of aerosols, water vapor distribution, thermodynamic parameters, and cloud charge separation and electrification processes on atmospheric electricity and electromagnetic waves are reviewed. We also briefly revisit ionospheric irregularities such as spread-F and explosive spread-F, sporadic-E, traveling ionospheric disturbances, Trimpi effect, and hiss and plasma turbulence. Regarding the role of the lower boundary of the cavity, we review transient surface phenomena, including seismic activity, earthquakes, volcanic processes and dust electrification. The role of surface and https://ntrs.nasa.gov/search.jsp?R=20120011991 2019-03-25T00:54:44+00:00Z atmospheric gravity waves in ionospheric dynamics is also briefly addressed. We summarize analytical and numerical tools and techniques to model low frequency electromagnetic wave propagation and solving inverse problems and summarize in a final section a few challenging subjects that are important for a better understanding of tropospheric-ionospheric coupling mechanisms.

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“…This shielding is an important physical effect that must be included in any realistic electric field. More complicated models typically consist of many terms of a spherical harmonic expansion [e.g., Foster et al, 1986;Weimer, 1996]. This level of complexity is not necessary for the present purpose but can be added in a straightforward manner.…”

Section: External Convection Electric Fieldmentioning

confidence: 99%

Thermal plasmaspheric morphology: Effect of geomagnetic and solar activity

Reynolds¹,

Ganguli²,

Fedder³

et al. 1999

J. Geophys. Res.

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Abstract. A multispecies kinetic model of the thermal plasma in the plasmasphere is used to predict the spatial dependence of the hydrogen ion and helium ion density and temperature for different levels of geomagnetic and solar activity. The particular convection electric field model chosen is intended for the time intervals between substorms. The plasma density and temperature in the equatorial plane are found to exhibit a local-time variation that is sensitive to the details of the convection electric field. In particular, the parallel temperature increases with altitude and the perpendicular temperature decreases with altitude, except in the postmidnight sector, features that are only possible if kinetic effects are taken into account. In addition, the ratio of the helium ion density to the hydrogen ion density is found to agree with observations of the Dynamics Explorer 1 satellite. This behavior can be explained by the effects of convection on the thermal particles that are magnetically trapped on closed field lines. These results have implications for the interpretation and analysis of sunlight scattered by helium ions (He II) to be measured by future global imaging satellites.

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Ionospheric convection associated with discrete levels of particle precipitation

Cited by 280 publications

References 7 publications

Comparison of models and measurements at Millstone Hill during the January 24–26, 1993, minor storm interval

Comparison of models and measurements at Millstone Hill during the January 24–26, 1993, minor storm interval

A Review of Low Frequency Electromagnetic Wave Phenomena Related to Tropospheric-Ionospheric Coupling Mechanisms

Thermal plasmaspheric morphology: Effect of geomagnetic and solar activity

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