GUVI Biblio

Longitudinal variations of electron temperature and total ion density in the sunset equatorial topside ionosphere

Based on the DMSP F13 Satellite observations from 1995 to 2005, the longitudinal distributions of the electron temperature (Te) and total ion density (Ni) in the sunset equatorial topside ionosphere are examined. The results suggest that the longitudinal variations of both Te and Ni exhibit obvious seasonal dependence as follows: (1) wavenumber-four longitudinal structure in equinox, (2) three peaks structure in June solstice, and (3) two peaks structure in December solstice. Moreover, the longitudinal variations of Te and N ...

Ren, Zhipeng; Wan, Weixing; Liu, Libo; Zhao, Biqiang; Wei, Yong; Yue, Xinan; Heelis, Roderick;

Published by: Geophysical Research Letters      Published on:

YEAR: 2008     DOI: https://doi.org/10.1029/2007GL032998

topside ionosphere; longitudinal variation

Longitudinal variations of electron temperature and total ion density in the sunset equatorial topside ionosphere

Based on the DMSP F13 Satellite observations from 1995 to 2005, the longitudinal distributions of the electron temperature (Te) and total ion density (Ni) in the sunset equatorial topside ionosphere are examined. The results suggest that the longitudinal variations of both Te and Ni exhibit obvious seasonal dependence as follows: (1) wavenumber-four longitudinal structure in equinox, (2) three peaks structure in June solstice, and (3) two peaks structure in December solstice. Moreover, the longitudinal variations of Te and N ...

Ren, Zhipeng; Wan, Weixing; Liu, Libo; Zhao, Biqiang; Wei, Yong; Yue, Xinan; Heelis, Roderick;

Published by: Geophysical Research Letters      Published on:

YEAR: 2008     DOI: https://doi.org/10.1029/2007GL032998

topside ionosphere; longitudinal variation

Prestorm enhancements in NmF2 and total electron content at low latitudes

The enhancement of electron concentrations in the ionosphere before geomagnetic storms is one of the open questions. Using ionosonde observations and total electron content (TEC) from Global Positioning System (GPS) measurements along longitude 120°E, we analyzed three low latitude pre-storm enhancement events that occurred on 21 April (day 111) 2001, 29 May (day 149) 2003, and 22 September (day 265) 2001, respectively, in the Asia/Australia sector. All three events (and other two cases on 9 August 2000 and 10 May 2002) sho ...

Liu, Libo; Wan, Weixing; Zhang, Man-Lian; Zhao, Biqiang; Ning, Baiqi;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2008     DOI: https://doi.org/10.1029/2007JA012832

Ionosphere; prestorm enhancement; low latitude

Use of two-line element data for thermosphere neutral density model calibration

Traditional empirical thermospheric density models are widely used in orbit determination and prediction of low-Earth satellites. Unfortunately, these models often exhibit large density errors of up to around 30\% RMS. Density errors translate into orbit errors, adversely affecting applications such as re-entry operations, manoeuvre planning, collision avoidance and precise orbit determination for geodetic missions. The extensive database of two-line element (TLE) orbit data contains a wealth of information on satellite drag ...

Doornbos, Eelco; Klinkrad, Heiner; Visser, Pieter;

Published by: Advances in Space Research      Published on:

YEAR: 2008     DOI: https://doi.org/10.1016/j.asr.2006.12.025

thermosphere density; satellite drag; Orbit determination; two-line elements

The linkage between the ring current and the ionosphere system

The coupling between the ring current and the ionosphere is briefly reviewed and discussed. Given global energetic neutral atom (ENA) observations of the ring current, the three-dimensional current system driven by ring current plasma pressure (the region 2 system) is derived to illustrate where the ring current connects to the ionosphere. Special attention is given to how the ring current and ionospheric conductance set up the sub-auroral polarization streams (SAPS) through the closure of the region 2 current through the io ...

Brandt, PC; Zheng, Y; Sotirelis, TS; Oksavik, K; Rich, FJ;

Published by: Midlatitude ionospheric dynamics and disturbances, edited by: Kintner, PM, Coster, AJ, Fuller-Rowell, T., Mannucci, A. J., Mendillo, M., and Heelis, R., Geophys. Monog. Series      Published on:

YEAR: 2008     DOI:

Solar system ionospheres

This article reviews our understanding of the ionospheres in the solar system. It provides some basic information on the sources and sinks of the ionospheric plasma, its dynamics, the energetics and the coupling to the neutral atmosphere. Ionospheres in the solar system are reviewed and comparative ionospheric topics are discussed.

Witasse, O; Cravens, T; Mendillo, M; Moses, J; Kliore, A; Nagy, AF; Breus, T;

Published by: Comparative Aeronomy      Published on:

YEAR: 2008     DOI:

Empirical modeling of the magnetospheric ring current

By using theoretical models of plasma dynamics, it is possible to reconstruct the evolution of many magnetospheric processes; nevertheless, these models need the support of both electric and magnetic field models, and they can simulate only known processes. Conversely, the empirical models are mainly based on statistical analysis; hence, they start from observations, not from processes. Statistical analyses and the derived empirical models are important complements to theoretical models and simulations since the former repre ...

Milillo, Anna; Orsini, Stefano;

Published by: COST 724 final report      Published on:

YEAR: 2008     DOI:

Ionosphere disturbances observed throughout Southeast Asia of the superstorm of 20--22 November 2003

Ionospheric disturbances in the Southeast Asian region during the super magnetic storm of 20–22 November 2003 were investigated through an ionosonde chain and a GPS network assisted by the space-borne instruments. At early stage of the storm in the postsunset sector, large enhancements in the critical frequency of F2 layer and total electron content were observed at northern crest region of the equatorial ionization anomaly (EIA), which might be produced by both the storm meridional wind superimposed with traveling atmosph ...

Zhao, B; Wan, W; Tschu, K; Igarashi, K; Kikuchi, T; Nozaki, K; Watari, S; Li, G; Paxton, LJ; Liu, L; , others;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2008     DOI: 10.1029/2008JA013054

Magnetic storm; Ionospheric disturbance; mid-low latitudes

Ionosphere disturbances observed throughout Southeast Asia of the superstorm of 20--22 November 2003

Ionospheric disturbances in the Southeast Asian region during the super magnetic storm of 20–22 November 2003 were investigated through an ionosonde chain and a GPS network assisted by the space-borne instruments. At early stage of the storm in the postsunset sector, large enhancements in the critical frequency of F2 layer and total electron content were observed at northern crest region of the equatorial ionization anomaly (EIA), which might be produced by both the storm meridional wind superimposed with traveling atmosph ...

Zhao, B; Wan, W; Tschu, K; Igarashi, K; Kikuchi, T; Nozaki, K; Watari, S; Li, G; Paxton, LJ; Liu, L; , others;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2008     DOI: 10.1029/2008JA013054

Magnetic storm; Ionospheric disturbance; mid-low latitudes

Anomalous enhancement of ionospheric electron content in the Asian-Australian region during a geomagnetically quiet day

Zhao, B; Wan, W; Liu, L; Igarashi, K; Nakamura, M; Paxton, LJ; Su, S-Y; Li, G; Ren, Z;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2008     DOI:

Anomalous enhancement of ionospheric electron content in the Asian-Australian region during a geomagnetically quiet day

Zhao, B; Wan, W; Liu, L; Igarashi, K; Nakamura, M; Paxton, LJ; Su, S-Y; Li, G; Ren, Z;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2008     DOI:

Modeling auroral E-region parameters for IRI: A new assimilative capability for IRI

Zhang, Yongliang; Paxton, Larry; Bilitza, Dieter;

Published by: 37th COSPAR Scientific Assembly      Published on:

YEAR: 2008     DOI:

The structure of equatorial ionization anomaly seen by TIMED/GUVI limb observations

Lee, I; Liu, J; Rajesh, P; Lin, C;

Published by:       Published on:

YEAR: 2008     DOI:

The structure of equatorial ionization anomaly seen by TIMED/GUVI limb observations

Lee, I; Liu, J; Rajesh, P; Lin, C;

Published by:       Published on:

YEAR: 2008     DOI:

Leveraging Capabilities in the Community: CDAWeb Data and Services within VITMO

Bilitza, D; Barnes, R; Candey, R; Harris, B; Holder, R; Immer, E; McGuire, R; Morrison, D; Patrone, D; Potter, M; , others;

Published by:       Published on:

YEAR: 2008     DOI:

Wavenumber-4 patterns of the total electron content over the low latitude ionosphere

Wan, W; Liu, L; Pi, X; Zhang, M-L; Ning, B; Xiong, J; Ding, F;

Published by: Geophysical Research Letters      Published on:

YEAR: 2008     DOI:

Unusual ionospheric effects observed during the intense 28 October 2003 solar flare in the Brazilian sector

Sahai, Y.; Becker-Guedes, F.; Fagundes, P.R.; Lima, W.L.C.; de Abreu, A.J.; Guarnieri, F.L.; Candido, C.M.N.; Pillat, V.G.;

Published by:       Published on:

YEAR: 2008     DOI:

Comparison of ionospheric measurements made by digisondes with those inferred from ultraviolet airglow

DeMajistre, R.; Paxton, L.; Bilitza, D.;

Published by: Advances in Space Research      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1016/j.asr.2006.09.037

Constraining and validating the Oct/Nov 2003 X-class EUV flare enhancements with observations of FUV dayglow and E -region electron densities

Strickland, D.; Lean, J.; Daniell, R.; Knight, H.; Woo, W.; Meier, R.; Straus, P.; Woods, T.; Eparvier, F.; McMullin, D.; Christensen, A.; Morrison, D.; Paxton, L.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2006JA012074

Features of annual and semiannual variations derived from the global ionospheric maps of total electron content

Zhao, B.; Wan, W.; Liu, L.; Mao, T.; Ren, Z.; Wang, M.; Christensen, A.;

Published by: Annales Geophysicae      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.5194/angeo-25-2513-2007

Longitudinal structure of the equatorial ionosphere: Time evolution of the four-peaked EIA structure

Lin, C.; Hsiao, C.; Liu, J; Liu, C.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007JA012455

Longitudinal structure of the equatorial ionosphere: Time evolution of the four-peaked EIA structure

Lin, C.; Hsiao, C.; Liu, J; Liu, C.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007JA012455

Longitudinal structure of the equatorial ionosphere: Time evolution of the four-peaked EIA structure

Lin, C.; Hsiao, C.; Liu, J; Liu, C.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007JA012455

Motions of the equatorial ionization anomaly crests imaged by FORMOSAT-3/COSMIC

Lin, C.; Liu, J; Fang, T.; Chang, P; Tsai, H.; Chen, C.; Hsiao, C.;

Published by: Geophysical Research Letters      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007GL030741

Motions of the equatorial ionization anomaly crests imaged by FORMOSAT-3/COSMIC

Lin, C.; Liu, J; Fang, T.; Chang, P; Tsai, H.; Chen, C.; Hsiao, C.;

Published by: Geophysical Research Letters      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007GL030741

Plausible effect of atmospheric tides on the equatorial ionosphere observed by the FORMOSAT-3/COSMIC: Three-dimensional electron density structures

Lin, C.; Wang, W.; Hagan, M.; Hsiao, C.; Immel, T.; Hsu, M.; Liu, J; Paxton, L.; Fang, T.; Liu, C.;

Published by: Geophysical Research Letters      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007GL029265

Plausible effect of atmospheric tides on the equatorial ionosphere observed by the FORMOSAT-3/COSMIC: Three-dimensional electron density structures

Lin, C.; Wang, W.; Hagan, M.; Hsiao, C.; Immel, T.; Hsu, M.; Liu, J; Paxton, L.; Fang, T.; Liu, C.;

Published by: Geophysical Research Letters      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007GL029265

Plausible effect of atmospheric tides on the equatorial ionosphere observed by the FORMOSAT-3/COSMIC: Three-dimensional electron density structures

Lin, C.; Wang, W.; Hagan, M.; Hsiao, C.; Immel, T.; Hsu, M.; Liu, J; Paxton, L.; Fang, T.; Liu, C.;

Published by: Geophysical Research Letters      Published on: Jan-01-2007

YEAR: 2007     DOI: 10.1029/2007GL029265

Global-scale Observations of the Limb and Disk (GOLD)-New Observing Capabilities for Space Weather Specification and Forecasting

Eastes, R; Codrescu, M; McClintock, W; Aksnes, A; Anderson, D; Andersson, L; Burns, A; Budzien, S; Daniell, R; Dymond, K; , others;

Published by:       Published on:

YEAR: 2007     DOI:

Space-based research into the ionosphere-thermosphere system: The need for greater organization and a plan for achieving it

Clemmons, JH; Crowley, G; Heelis, RA; Mannucci, AJ; Paxton, LJ; Pfaff, RF; Spann, JF;

Published by:       Published on:

YEAR: 2007     DOI:

Using Satellite Measurements to Evaluate Clouds And Their Seasonal Variations in 10 Atmospheric General Circulation Models

Zhang, M; Lin, W; Klein, S; Backmeister, J; Bony, S; Cederwall, R; Del Genio, A; Hack, J; Loeb, N; Lohmann, U; , others;

Published by:       Published on:

YEAR: 2007     DOI:

Constraining and validating the Oct/Nov 2003 X-class EUV flare enhancements with observations of FUV dayglow and E-region electron densities

Strickland, DJ; Lean, JL; , Daniell; Knight, HK; Woo, WK; Meier, RR; Straus, PR; Woods, TN; Eparvier, FG; McMullin, DR; , others;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2007     DOI:

Correction of SOHO CELIAS/SEM EUV measurements saturated by extreme solar flare events

Didkovsky, LV; Judge, DL; Jones, AR; Wieman, S; Tsurutani, BT; McMullin, D;

Published by: Astronomische Nachrichten: Astronomical Notes      Published on:

YEAR: 2007     DOI:

Brazilian ionosphere behavior during an intense solar flare

The 28 October 2003 solar flare was one of the most intense solar flares observed in the recent past. In the present investigation we show the ionospheric effects observed in the

Becker-Guedes, F; Sahai, Y; Fagundes, PR; Abreu, A; Pillat, VG; Lima, WLC;

Published by:       Published on:

YEAR: 2007     DOI: https://doi.org/10.3997/2214-4609-pdb.172.SBGF0393_07

Variations of topside ionospheric scale heights over Millstone Hill during the 30-day incoherent scatter radar experiment

A 30-day incoherent scatter radar (ISR) experiment was conducted at Millstone Hill (288.5 E, 42.6 N) from 4 October to 4 November 2002. The altitude profiles of electron density N e

Liu, L; Wan, W; Zhang, M-L; Ning, B; Zhang, S-R; Holt, JM;

Published by:       Published on:

YEAR: 2007     DOI: 10.5194/angeo-25-2019-2007

Unusual ionospheric effects observed during the intense 28 October 2003 solar flare in the Brazilian sector

Sahai, Y; Becker-Guedes, F; Fagundes, PR; Lima, WLC; De Abreu, AJ; Guarnieri, FL; Candido, CMN; Pillat, VG;

Published by:       Published on:

YEAR: 2007     DOI:

Global inventory of precipitating populations during the 15-30 January 2005 long-duration flares and magnetic storms: Relative efficacy at ozone destruction

Kozyra, JU; Cattell, CA; Clilverd, M; Evans, DS; Kavanagh, A; Liemohn, MW; Mende, SB; Paxton, LJ; Ridley, A; Soraas, F;

Published by:       Published on:

YEAR: 2007     DOI:

Global inventory of precipitating populations during the 15-30 January 2005 long-duration flares and magnetic storms: Relative efficacy at ozone destruction

Kozyra, JU; Cattell, CA; Clilverd, M; Evans, DS; Kavanagh, A; Liemohn, MW; Mende, SB; Paxton, LJ; Ridley, A; Soraas, F;

Published by:       Published on:

YEAR: 2007     DOI:

The low-latitude ionosphere as observed by TIMED/GUVI and TOPEX/Jason and comparisons with the IRI model

Hsieh, SW; Talaat, ER; Bilitza, D; DeMajistre, R; Paxton, L; Christensen, A; Yee, J;

Published by:       Published on:

YEAR: 2007     DOI:

Synoptical Auroral Ovals: A Comparison study with TIMED/GUVI Observations

Liou, K; Paxton, L; Zhang, Y;

Published by:       Published on:

YEAR: 2007     DOI:

Atomic oxygen photoionization rates computed with high resolution cross sections and solar fluxes

Meier, RR; McLaughlin, Brendan; Warren, HP; Bishop, James;

Published by: Geophysical research letters      Published on:

YEAR: 2007     DOI:

The ionospheric response in the Brazilian sector during the super geomagnetic storm on 20 November 2003

Becker-Guedes, F; Sahai, Y; Fagundes, PR; Espinoza, ES; Pillat, VG; Lima, WLC; Basu, Su; Basu, Sa; Otsuka, Y; Shiokawa, K; MacKenzie, E.; Bittencourt, J.;

Published by:       Published on:

YEAR: 2007     DOI:

We thank the following individuals for refereeing the papers in this issue of ASR. In addition to the names listed, there were a number of individuals who wished to remain anonymous.

Altamimi, Z; Appleby, G; Aquino, M; Banyai, L; Bar-Sever, YE; Barlier, F; Bettadpur, S; Biancale, R; Boomkamp, H; Bruinsma, S; , others;

Published by: Advances in Space Research      Published on:

YEAR: 2007     DOI:

Extreme longitudinal variability of plasma structuring in the equatorial ionosphere on a magnetically quiet equinoctial day

McDonald, Sarah; Basu, Sunanda; Basu, Santimay; Groves, Keith; Valladares, Cesar; Scherliess, Ludger; Thompson, Donald; Schunk, Robert; Sojka, Jan; Zhu, Lie;

Published by: Radio Science      Published on: Jan-12-2006

YEAR: 2006     DOI: 10.1029/2005RS003366

Photoionization Rate of Atomic Oxygen

Meier, RR; McLaughlin, BM; Warren, HP; Bishop, J;

Published by:       Published on:

YEAR: 2006     DOI:

VITMO: A Virtual Observatory for the ITM Community

Morrison, D; Weiss, M; Daley, R; Immer, L; Nylund, S; Yee, J; Talaat, E; Russell, J; Heelis, R; Kozyra, J; , others;

Published by:       Published on:

YEAR: 2006     DOI:

Global-scale Observations of the Limb and Disk (GOLD): Mission Implementation

McClintock, W; Lankton, M; Estes, R; Aksens, A; Anderson, D; Andersson, L; Codrescu, M; Burns, A; Daniell, R; Eparvier, F; , others;

Published by:       Published on:

YEAR: 2006     DOI:

Response of the Upper/Middle Atmosphere to Coronal Holes

RJ, Niciejewski; Palo\textordmasculine, SE; Paxton, LJ; Randall, CE; Rong\textordmasculine, PP;

Published by: Recurrent Magnetic Storms: Corotating Solar Wind Streams      Published on:

YEAR: 2006     DOI:

Response of the Upper/Middle Atmosphere to Coronal Holes

RJ, Niciejewski; Palo\textordmasculine, SE; Paxton, LJ; Randall, CE; Rong\textordmasculine, PP;

Published by: Recurrent Magnetic Storms: Corotating Solar Wind Streams      Published on:

YEAR: 2006     DOI:

A comparative study of the ionospheric F-region observations in the Brazilian low latitude region and the TIMEGCM model results during the super geomagnetic storm of 20 November 2003

Becker-Guedes, F; Sahai, Y; Fagundes, P; Crowley, G; Lima, W;

Published by:       Published on:

YEAR: 2006     DOI: