Characteristics of the Thermal Plasma Monitor (SSIES) (Special Sensor for Ions, Electrons, and Scintillation) for the Defense Meteorological Satellite Program (DMSP) Spacecraft S8 through S10

Greenspan, M. E.; Anderson, Peter B.; Pelagatti, J. M.

doi:10.21236/ada176924

Cited by 77 publications

(74 citation statements)

References 3 publications

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“…In the present study data are also presented for the cross-track ion velocity as measured by the sensors onboard DMSP satellites F10 and F11 (Greenspan et al, 1986). These data provide invaluable information as to the location of ionospheric¯ow reversals during each pass of the polar regions, which takes $1/4 of the satellite orbital period of 102 min.…”

Section: Instrumentationmentioning

confidence: 97%

Interhemispheric contrasts in the ionospheric convection response to changes in the interplanetary magnetic field and substorm activity: a case-study

Shand¹,

Yeoman²,

Lewis

et al. 1998

Ann. Geophys.

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Abstract. Interhemispheric contrasts in the ionospheric convection response to variations of the interplanetary magnetic ®eld (IMF) and substorm activity are examined, for an interval observed by the Polar AngloAmerican Conjugate Experiment (PACE) radar system between $ 1600 and $ 2100 MLT on 4 March 1992. Representations of the ionospheric convection pattern associated with dierent orientations and magnitudes of the IMF and nightside driven enhancements of the auroral electrojet are employed to illustrate a possible explanation for the contrast in convection¯ow response observed in radar data at nominally conjugate points. Ion drift measurements from the Defence Meteorological Satellite Program (DMSP) con®rm these ionospheric convection¯ows to be representative for the prevailing IMF orientation and magnitude. The location of the ®elds of view of the PACE radars with respect to these patterns suggest that the radar backscatter observed in each hemisphere is critically in¯uenced by the position of the ionospheric convection reversal boundary (CRB) within the radar ®eld of view and the in¯uence it has on the generation of the irregularities required as scattering targets by high-frequency coherent radar systems. The position of the CRB in each hemisphere is strongly controlled by the relative magnitudes of the IMF B z and B y components, and hence so is the interhemispheric contrast in the radar observations.

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Section: Instrumentationmentioning

confidence: 97%

Interhemispheric contrasts in the ionospheric convection response to changes in the interplanetary magnetic field and substorm activity: a case-study

Shand¹,

Yeoman²,

Lewis

et al. 1998

Ann. Geophys.

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“…The "Special Sensor -Ions, Electrons and Scintillation" (SSIES) package on board the DMSP satellites consists of four instruments: Langmuir Probe (LP), Retarding Potential Analyser (RPA), Ion Drift Meter (DM) and Scintillation Meter (SM). The operation of the SSIES instrumentation and DMSP data reduction are covered in detail by Heelis et al (1978) and Greenspan (1994). In this current study, the electron temperature data are obtained from the LP instrument.…”

Section: The Defense Meteorological Satellite Programmentioning

confidence: 99%

He<sup>+</sup> dominance in the plasmasphere during geomagnetically disturbed periods: 1. Observational results

et al. 2002

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Abstract.Observations made by the DMSP F10 satellite during the recovery phase from geomagnetic disturbances in June 1991 show regions of He + dominance around 830 km altitude at 09:00 MLT. These regions are co-located with a trough in ionisation observed around 55 • in the winter hemisphere. Plasma temperature and concentration observations made during the severe geomagnetic storm of 24 March 1991 are used as a case study to determine the effects of geomagnetic disturbances along the orbit of the F10 satellite. Previous explanations for He + dominance in this trough region relate to the part of the respective flux tubes that is in darkness. Such conditions are not relevant for this study, since the whole of the respective flux tubes are sunlit. A new mechanism is proposed to explain the He + dominance in the trough region. This mechanism is based on plasma transport and chemical reaction effects in the F-region and topside ionosphere, and on the time scales for such chemical reactions. Flux tubes previously depleted by geomagnetic storm effects refill during the recovery phase from the ionosphere as a result of pressure differences along the flux tubes. Following a geomagnetic disturbance, the He + ion recovers quickly via the rapid photoionisation of neutral helium, in the F-region and the topside. The recovery of the O + and H + ions is less rapid. This is proposed as a result of the respective charge exchange reactions with neutral atomic hydrogen and oxygen. Preliminary model calculations support the proposed mechanism.

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“…In order to disentangle the two, one of them must be independently determined. We make use of data from the retarding potential analyzer and the drift meter from the SSEIS instrument package on the DMSP spacecraft [Greenspan et al, 1986] direction sufficiently parallel to the satellite trajectory for the distance to the reconnection site to be well approximated. These are the energy-time spectrograms shown in Plate 1.…”

Section: Observations and Interpretationmentioning

confidence: 99%

Low‐altitude signatures of magnetotail reconnection

Sotirelis¹,

Newell²,

Meng³

et al. 1999

J. Geophys. Res.

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Characteristics of the Thermal Plasma Monitor (SSIES) (Special Sensor for Ions, Electrons, and Scintillation) for the Defense Meteorological Satellite Program (DMSP) Spacecraft S8 through S10

Cited by 77 publications

References 3 publications

Interhemispheric contrasts in the ionospheric convection response to changes in the interplanetary magnetic field and substorm activity: a case-study

Interhemispheric contrasts in the ionospheric convection response to changes in the interplanetary magnetic field and substorm activity: a case-study

He<sup>+</sup> dominance in the plasmasphere during geomagnetically disturbed periods: 1. Observational results

Low‐altitude signatures of magnetotail reconnection

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Characteristics of the Thermal Plasma Monitor (SSIES) (Special Sensor for Ions, Electrons, and Scintillation) for the Defense Meteorological Satellite Program (DMSP) Spacecraft S8 through S10

Cited by 77 publications

References 3 publications

Interhemispheric contrasts in the ionospheric convection response to changes in the interplanetary magnetic field and substorm activity: a case-study

Interhemispheric contrasts in the ionospheric convection response to changes in the interplanetary magnetic field and substorm activity: a case-study

He&lt;sup&gt;+&lt;/sup&gt; dominance in the plasmasphere during geomagnetically disturbed periods: 1. Observational results

Low‐altitude signatures of magnetotail reconnection

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Product

Resources

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He<sup>+</sup> dominance in the plasmasphere during geomagnetically disturbed periods: 1. Observational results