High-latitude ground-based observations of the thermospheric ion-drag time constant

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High-latitude ground-based observations of the thermospheric ion-drag time constant. / Kosch, M. J.; Cierpka, K.; Rietveld, M. T. et al.
In: Geophysical Research Letters, Vol. 28, No. 7, 04.2001, p. 1395-1398.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Kosch, MJ, Cierpka, K, Rietveld, MT, Hagfors, T & Schlegel, K 2001, 'High-latitude ground-based observations of the thermospheric ion-drag time constant', Geophysical Research Letters, vol. 28, no. 7, pp. 1395-1398. https://doi.org/10.1029/2000GL012380

APA

Kosch, M. J., Cierpka, K., Rietveld, M. T., Hagfors, T., & Schlegel, K. (2001). High-latitude ground-based observations of the thermospheric ion-drag time constant. Geophysical Research Letters, 28(7), 1395-1398. https://doi.org/10.1029/2000GL012380

Vancouver

Kosch MJ, Cierpka K, Rietveld MT, Hagfors T, Schlegel K. High-latitude ground-based observations of the thermospheric ion-drag time constant. Geophysical Research Letters. 2001 Apr;28(7):1395-1398. doi: 10.1029/2000GL012380

Author

Kosch, M. J. ; Cierpka, K. ; Rietveld, M. T. et al. / High-latitude ground-based observations of the thermospheric ion-drag time constant. In: Geophysical Research Letters. 2001 ; Vol. 28, No. 7. pp. 1395-1398.

Bibtex

@article{dd98398fb89b491d8d822cb29bd180ac,

title = "High-latitude ground-based observations of the thermospheric ion-drag time constant",

abstract = "From previous studies, it has been conclusively demonstrated that F-region thermospheric winds follow, but generally lag behind, the ion drift pattern of magnetospheric convection. Analysis of the ion-neutral momentum exchange equation shows that ion-drag and thermal pressure are the major contributors to neutral momentum forcing at F-region heights with relatively minor effects from coriolis, advection and viscous forces. An ion-neutral coupling time constant (e-folding time) has been defined which describes the time taken for the neutral gas velocity to approach the ion velocity after a step change in convection. In this study, F-region ion drift and neutral winds have been observed by the EISCAT tristatic incoherent scatter facility and a ground-based Fabry-Perot interferometer, respectively, from northern Scandinavia. The e-folding time varies in the range 0.5 - 6.5 hours, with an average of 1.8 and 3.3 hours for a geomagnetically active and quiet period, respectively, which compares well with previous satellite measurements of 0.5 - 3.5 hours.",

keywords = "fpi DCS-publications-id, art-208, DCS-publications-credits, fpi, iono-fa, DCS-publications-personnel-id, 7, 56",

author = "Kosch, {M. J.} and K. Cierpka and Rietveld, {M. T.} and T. Hagfors and K. Schlegel",

year = "2001",

month = apr,

doi = "10.1029/2000GL012380",

language = "English",

volume = "28",

pages = "1395--1398",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "John Wiley & Sons, Ltd",

number = "7",

}

RIS

TY - JOUR

T1 - High-latitude ground-based observations of the thermospheric ion-drag time constant

AU - Kosch, M. J.

AU - Cierpka, K.

AU - Rietveld, M. T.

AU - Hagfors, T.

AU - Schlegel, K.

PY - 2001/4

Y1 - 2001/4

N2 - From previous studies, it has been conclusively demonstrated that F-region thermospheric winds follow, but generally lag behind, the ion drift pattern of magnetospheric convection. Analysis of the ion-neutral momentum exchange equation shows that ion-drag and thermal pressure are the major contributors to neutral momentum forcing at F-region heights with relatively minor effects from coriolis, advection and viscous forces. An ion-neutral coupling time constant (e-folding time) has been defined which describes the time taken for the neutral gas velocity to approach the ion velocity after a step change in convection. In this study, F-region ion drift and neutral winds have been observed by the EISCAT tristatic incoherent scatter facility and a ground-based Fabry-Perot interferometer, respectively, from northern Scandinavia. The e-folding time varies in the range 0.5 - 6.5 hours, with an average of 1.8 and 3.3 hours for a geomagnetically active and quiet period, respectively, which compares well with previous satellite measurements of 0.5 - 3.5 hours.

AB - From previous studies, it has been conclusively demonstrated that F-region thermospheric winds follow, but generally lag behind, the ion drift pattern of magnetospheric convection. Analysis of the ion-neutral momentum exchange equation shows that ion-drag and thermal pressure are the major contributors to neutral momentum forcing at F-region heights with relatively minor effects from coriolis, advection and viscous forces. An ion-neutral coupling time constant (e-folding time) has been defined which describes the time taken for the neutral gas velocity to approach the ion velocity after a step change in convection. In this study, F-region ion drift and neutral winds have been observed by the EISCAT tristatic incoherent scatter facility and a ground-based Fabry-Perot interferometer, respectively, from northern Scandinavia. The e-folding time varies in the range 0.5 - 6.5 hours, with an average of 1.8 and 3.3 hours for a geomagnetically active and quiet period, respectively, which compares well with previous satellite measurements of 0.5 - 3.5 hours.

KW - fpi DCS-publications-id

KW - art-208

KW - DCS-publications-credits

KW - fpi

KW - iono-fa

KW - DCS-publications-personnel-id

KW - 7

KW - 56

U2 - 10.1029/2000GL012380

DO - 10.1029/2000GL012380

M3 - Journal article

VL - 28

SP - 1395

EP - 1398

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 7

ER -

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