GUVI Biblio





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Found 19 entries in the Bibliography.


Showing entries from 1 through 19


2018

Nighttime Enhancements in the Midlatitude Ionosphere and Their Relation to the Plasmasphere

In situ electron density measurements by the CHAllenging Minisatellite Payload and the Defense Meteorological Satellites Program F17 satellites show that the midlatitude ionization at altitudes of \~350 and 850\ km is enhanced in the late evening. The enhancements increase to maximum around midnight and are clearly observed till early morning as the equatorial ionization decays to minimal level. They appear in the winter hemisphere during June and December solstices and in both hemispheres during equinox. The enhance ...

Li, Quanhan; Hao, Yongqiang; Zhang, Donghe; Xiao, Zuo;

Published by: Journal of Geophysical Research: Space Physics      Published on: 08/2018

YEAR: 2018     DOI: 10.1029/2018JA025422

2017

Regional differences of the ionospheric response to the July 2012 geomagnetic storm

The July 2012 geomagnetic storm is an extreme space weather event in solar cycle 24, which is characterized by a southward interplanetary geomagnetic field lasting for about 30\ h below -10\ nT. In this work, multiple instrumental observations, including electron density from ionosondes, total electron content (TEC) from Global Positioning System, Jason-2, and Gravity Recovery and Climate Experiment, and the topside ion concentration observed by the Defense Meteorological Satellite Program spacecraft are used to ...

Kuai, Jiawei; Liu, Libo; Lei, Jiuhou; Liu, Jing; Zhao, Biqiang; Chen, Yiding; Le, Huijun; Wang, Yungang; Hu, Lianhuan;

Published by: Journal of Geophysical Research: Space Physics      Published on: 04/2017

YEAR: 2017     DOI: 10.1002/2016JA023844

Analysis and design of the ultraviolet warning optical system based on interference imaging

Ultraviolet warning technology is one of the important methods for missile warning. It provides a very effective way to detect the target for missile approaching alarm. With the development of modern technology, especially the development of information technology at high speed, the ultraviolet early warning system plays an increasingly important role. Compared to infrared warning, the ultraviolet warning has high efficiency and low false alarm rate. In the modern warfare, how to detect the threats earlier, prevent and re ...

Wencong, Wang; Jin, Dong-dong; Chu, Xin-bo; Shi, Yu-feng; Song, Juan; Liu, Jin-sheng; Shao, Si-pei; Hu, Hui-jun; Xiao, Ting;

Published by:       Published on:

YEAR: 2017     DOI: 10.1117/12.2285832

2016

Long-lasting negative ionospheric storm effects in low and middle latitudes during the recovery phase of the 17 March 2013 geomagnetic storm

In this paper, an ionospheric electron density reanalysis algorithm was used to generate global optimized electron density during the 17\textendash18 March 2013 geomagnetic storm by assimilating ~10 low Earth orbit satellites based and ~450 ground global navigation satellite system receiver-based total electron content into a background ionospheric model. The reanalyzed electron density could identify the large-scale ionospheric features quite well during storm time, including the storm-enhanced density, the positive iono ...

Yue, Xinan; Wang, Wenbin; Lei, Jiuhou; Burns, Alan; Zhang, Yongliang; Wan, Weixing; Liu, Libo; Hu, Lianhuan; Zhao, Biqiang; Schreiner, William;

Published by: Journal of Geophysical Research: Space Physics      Published on: 11/2016

YEAR: 2016     DOI: 10.1002/jgra.v121.910.1002/2016JA022984

SPIE ProceedingsThe reconnaissance and early-warning optical system design for dual field of space-based "solar blind ultraviolet"

With the development of modern technology, especially the development of information technology at high speed, the ultraviolet early warning system plays an increasingly important role. In the modern warfare, how to detect the threats earlier, prevent and reduce the attack of precision-guided missile has become a new challenge. Because the ultraviolet warning technology has high environmental adaptability, the low false alarm rate, small volume and other advantages, in the military field applications it has been developed ...

Wang, Wen-cong; Jin, Dong-dong; Shao, Fei; Hu, Hui-jun; Shi, Yu-feng; Song, Juan; Zhang, Yu-tu; Yong, Liu;

Published by:       Published on:

YEAR: 2016     DOI: 10.1117/12.2236440

2015

The long-duration positive storm effects in the equatorial ionosphere over Jicamarca

The long-duration positive storm (LPS) in the equatorial regions is relatively poorly understood. In this report, we conducted a statistical analysis of the LPS effects in the equatorial ionosphere over Jicamarca (12.0\textdegreeS, 283.2\textdegreeE) in 1998\textendash2010. There are 250 geomagnetic storms (minimum Dst \< -50 nT) in 1998\textendash2010, but the ionosonde observations at Jicamarca are available only for 204 storms. A total of 46 LPSs are identified in terms of the criterion that the storm time ...

Kuai, Jiawei; Liu, Libo; Liu, Jing; Zhao, Biqiang; Chen, Yiding; Le, Huijun; Wan, Weixing;

Published by: Journal of Geophysical Research: Space Physics      Published on: 02/2015

YEAR: 2015     DOI: 10.1002/2014JA020552

ionospheric long-duration positive storms

2014

A study of GPS ionospheric scintillations observed at Shenzhen

Ionospheric scintillation variations are studied using GPS measurements at the low latitude station of Shenzhen (22.59\textdegreeN,\ 113.97\textdegreeE), situated under the northern crest of the equatorial anomaly region, from the Chinese Meridian Project. The results are presented for data collected during the current phase of rising solar activity (low to high solar activity) from December 2010 to April 2014. The results show that GPS scintillation events were largely a nighttime phenomenon during the whole observa ...

Huang, Linfeng; Wang, Jinsong; Jiang, Yong; Chen, Zhou; Zhao, Kai;

Published by: Advances in Space Research      Published on: 12/2014

YEAR: 2014     DOI: 10.1016/j.asr.2014.08.023

GPS; Ionospheric scintillation; Scintillation event

A case study of ionospheric storm effects during long-lasting southward IMF B z -driven geomagnetic storm

Multiple instrumental observations including GPS total electron content (TEC), foF2 and hmF2 from ionosondes, vertical ion drift measurements from Communication/Navigation Outage Forecasting System, magnetometer data, and far ultraviolet airglow measured by Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics/Global Ultraviolet Imager (TIMED/GUVI) are used to investigate the profound ionospheric disturbances at midlatitude and low latitude during the 14 ...

Liu, Jing; Liu, Libo; Nakamura, Takuji; Zhao, Biqiang; Ning, Baiqi; Yoshikawa, A.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 09/2014

YEAR: 2014     DOI: 10.1002/jgra.v119.910.1002/2014JA020273

GUVI; Ionospheric storm; prompt penetration electric fields; TIMED

2013

East-west differences in F -region electron density at midlatitude: Evidence from the Far East region

The global configuration of the geomagnetic field shows that the maximum east-west difference in geomagnetic declination of northern middle latitude lies in the US region (~32\textdegree), which produces the significant ionospheric east-west coast difference in terms of total electron content first revealed by Zhang et al. (2011). For verification, it is valuable to investigate this feature over the Far East area, which also shows significant geomagnetic declination east-west gradient but smaller (~15\textdegree) than tha ...

Zhao, Biqiang; Wang, Min; Wang, Yungang; Ren, Zhipeng; Yue, Xinan; Zhu, Jie; Wan, Weixing; Ning, Baiqi; Liu, Jing; Xiong, Bo;

Published by: Journal of Geophysical Research: Space Physics      Published on: 01/2013

YEAR: 2013     DOI: 10.1029/2012JA018235

geomagnetic declination; longitudinal variation; midlatitude ionosphere

2012

A simulation study for the couplings between DE3 tide and longitudinal WN4 structure in the thermosphere and ionosphere

Wan, W.; Ren, Z.; Ding, F.; Xiong, J.; Liu, L.; Ning, B.; Zhao, B.; Li, G.; Zhang, M.-L.;

Published by: Journal of Atmospheric and Solar-Terrestrial Physics      Published on: Jan-12-2012

YEAR: 2012     DOI: 10.1016/j.jastp.2012.04.011

High-speed stream impacts on the equatorial ionization anomaly region during the deep solar minimum year 2008

Liu, Jing; Liu, Libo; Zhao, Biqiang; Wei, Yong; Hu, Lianhuan; Xiong, B.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2012

YEAR: 2012     DOI: 10.1029/2012JA018015

Superposed epoch analyses of thermospheric response to CIRs: Solar cycle and seasonal dependencies

Liu, Jing; Liu, Libo; Zhao, Biqiang; Lei, Jiuhou; Thayer, Jeffrey; McPherron, Robert;

Published by: Journal of Geophysical Research      Published on: Jan-01-2012

YEAR: 2012     DOI: 10.1029/2011JA017315

Influence of interplanetary solar wind sector polarity on the ionosphere

Knowledge of solar sector polarity effects on the ionosphere may provide some clues in understanding of the ionospheric day-to-day variability and \textquotedbllefthysteresis\textquotedblright effect on foF2. Ionospheric response to changes in solar sector polarity has not been fully documented previously, partly due to the limitation of observations. In this study, a solar-terrestrial connection ranging from solar sector boundary (SB) crossings, geomagnetic disturbances and ionospheric perturbations has been demonstrated ...

Liu, Jing; Liu, Libo; Zhao, Biqiang; Wan, Weixing;

Published by: Journal of Geophysical Research      Published on: 08/2012

YEAR: 2012     DOI: 10.1029/2012JA017859

interplanetary magnetic field; Ionospheric disturbance; solar sector polarity

Recent Progresses on Ionospheric Climatology Investigations

The ionosphere varies over multiple time scales, which are classified into two categories: the climatology and weather variations. In this national report, we give a brief summary of recent progresses in ionospheric climatology with focus on (1) the seasonal variations, (2) solar cycle effects, and (3) empirical modeling of the ionosphere. The seasonal variations of the ionosphere have been explored in many works to give a more detailed picture with regional and global features at various altitudes by analyzing the obse ...

Liu, L.; Le, H.; Zhao, B.;

Published by: Chin. J. Space Sci.      Published on:

YEAR: 2012     DOI:

Climatological variation; Ionosphere; Ionospheric modeling; Seasonal variations; solar cycle

2010

Longitudinal modulation of the O/N 2 column density retrieved from TIMED/GUVI measurement

He, Maosheng; Liu, Libo; Wan, Weixing; Lei, Jiuhou; Zhao, Biqiang;

Published by: Geophysical Research Letters      Published on: Jan-10-2010

YEAR: 2010     DOI: 10.1029/2010GL045105

Correlation between the ionospheric WN4 signature and the upper atmospheric DE3 tide

Wan, W.; Xiong, J.; Ren, Z.; Liu, L.; Zhang, M.-L.; Ding, F.; Ning, B.; Zhao, B.; Yue, X.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2010

YEAR: 2010     DOI: 10.1029/2010JA015527

2009

Ionospheric response to the geomagnetic storm on 13\textendash17 April 2006 in the West Pacific region

This paper presents an investigation of geomagnetic storm effects in the equatorial and middle-low latitude F-region in the West Pacific sector during the intense geomagnetic storm on 13\textendash17 April, 2006. The event, preceded by a minor storm, started at 2130 UT on April 13 while interplanetary magnetic field (IMF)\ Bzcomponent was ready to turn southward. From 14\textendash17 the ionosphere was characterized by a large scale enhancement in critical frequency, foF2 (4\~6\ MHz) and tota ...

Zhao, Biqiang; Wan, Weixing; Liu, Libo; Igarashi, K.; Yumoto, K.; Ning, Baiqi;

Published by: Journal of Atmospheric and Solar-Terrestrial Physics      Published on: Jan-01-2009

YEAR: 2009     DOI: 10.1016/j.jastp.2008.09.029

Magnetic storm; total electron content; Mid-low latitude

2008

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, AB;

Published by:       Published on:

YEAR: 2008     DOI:

2007

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



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