In this study, the inter-comparison of various global vertical total electron contents are derived from Global Positioning System (GPS) networks worldwide. Based on observation data obtained from global network of dual frequency, the ionospheric variability on one full year, 2008 is studied through the vertical electron conten distribution GPS. The comparisons are aimed at comparability of the different vertical total electron content data sets in terms of absolute magnitude, capturing diurnal, seasonal variability globally. Total electron content (TEC) values were compared by computing the TEC differences among different stations. Most of the data sets exhibit expected diurnal variability with some differences on the absolute magnitude of vertical total electron content moreover, seasonally, the variability is also comparable. In this observation, highest vertical electron contents are observed on the Jet prolusion laboratory. It is followed by International global service, vertical total electron content and the least is observed on the Polytechnical University data sets.
Published in | International Journal of Astrophysics and Space Science (Volume 7, Issue 4) |
DOI | 10.11648/j.ijass.20190704.12 |
Page(s) | 41-48 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2019. Published by Science Publishing Group |
Vertical Electron Content, Diurnal, Seasonal Variation, GPS
[1] | Sizun H., 2005, Radio Wave Propagation for telecommunication Applications, Springer Verlag Berlin Heidelberg, New York. |
[2] | S. G. Jin, J. Wang, H. Zhang, and W. Zhu, “Real-time monitoring and prediction of Ionosphere Electron Content by means of GPS,” Chin. Astro. Astrophys., vol. 28, pp. 331-337, 2004. |
[3] | Rishbeth H. and Garriot O. K., 1969. Introduction to Ionospheric Physics, volume 14 of International Geophysics, Academic Press. |
[4] | McNamara L. F., 1990. The Ionosphere: Communications, Surveillance, and Direction Finding, Krieger publishing company, Malabar, Florida. |
[5] | Bagiya M. S, Joshi HP, Iyer KN, Aggarwal M, Ravindran S, Pathan BM., 2009. TEC variations during low solar activity period (2005-2007) near the equatorial ionospheric anomaly crest region in India. Ann Geophys 27: 10471057. |
[6] | Moffett RJ, Hanson WB., 1965. Effect of ionization transport on the equatorial F- region. Nature 206: 705706. |
[7] | Bradford, W. P. and Spilker, J. J. J., 1996. Global Positioning System: Theory and applications, American Institute of Aeronautics and Astronautics, Vol. I and II Washington DC, USA. |
[8] | Fahmi. A. M, 2015, Comparison of Ionospheric Total Electron Content Measurements with IRI-2012 Model Predictions Over Athens, Iraqi Journal of Science, Vol 56, No. 1A, pp: 246-256. |
[9] | Leonard K., Daniel M., Eleri S. P., Ljiljana R. Cander, Ruth A. Bamford, Anna B., Reinhart L., Sandro M. R, Cathryn N. M., And Paul S. J. Spencer, 2004, Total electron content – A key parameter in propagation: measurement and use in ionospheric imaging, ANNALS OF GEOPHYSICS, SUPPLEMENT TO VOL. 47, N. 2/3. |
[10] | Ercha, A., D. Zhang, A. J. Ridley, Z. Xiao, and Y. Hao., 2012. A global model: Empirical orthogonal function analysis of total electron content 19992009 data, J. Geophys. Res., 117, A03328, doi: 10.1029/2011JA017238. |
[11] | Schaer, S.; Markus; R. Gerhard; B. Timon, A. S., 1996. Daily Global Ionosphere Maps based on GPS Carrier Phase Data Routinely produced by the CODE Analysis Center, Proceeding of the IGS Analysis Center Workshop, Silver Spring, Maryland, pp. 181-192, USA. |
[12] | Ho, C. M., A. J. Mannucci, U. J. Lindqwister, X. Pi, and B. T. Tsurutani, 1996. Global ionosphere perturbations monitored by the worldwide GPS network, Geophys. Res. Lett., 23, 32193222, doi: 10.1029/1996GL02763. |
[13] | Feltens and schaer, J., and S. Schaer, 1998. IGS products for the ionosphere, IGS Position Paper, in IGS 1998 Analysis Center Workshop: Proceedings, edited by J. M. Dow, J. Kouba, and T. Springer, pp. 225232, EurSpace Oper. Cent., Darmstadt, Germany. |
[14] | Hernndez-Pajares, M., J. M. Juan, J. Sanz, R. Orus, A. Garcia-Rigo, J. Feltens, A. Komjathy, S. C. Schaer, and A. Krankowski, 2009. The IGS VTEC maps: A reliable source of ionospheric information since 1998, J. Geod., 83, 263275, doi: 10.1007/s00190-008-0266-1. |
[15] | Gao, Y., P., Heroux, and J. Kouba, 1994. Estimation of GPS receiver and satellite L1/L2 signal delay biases using data from CACS, paper presented at the International Symposium on Kinematic Systems in Geodesy, Geomatics, and Navigation, Univ. of Calgary, Ban, Alberta, Canada. |
[16] | Mannucci, A. J., B. D. Wilson, D. N. Yuan, C. M. Ho, U. J. Lindqwister, and T. F. Runge, 1998. A global mapping technique for GPS-derived ionospheric total electron content measurements, Radio Sci., 33, 565582. |
[17] | Wan, W., L. Liu, X. Pi, M.-L. Zhang, B. Ning, J. Xiong, and F. Ding, 2008. Wavenumber-4 patterns of the total electron content over the low latitude ionosphere, Geophys. Res. Lett., 36, L12104, doi: 10.1029/2008GL033755. |
[18] | Nayir, H., F. Arikan, O. Arikan, and C. B. Erol (2007), Total Electron Content estimation with Reg-Est, J. Geophys. Res., 112, A11313, doi: 10.1029/2007JA012459. |
[19] | Arikan, F., C. B. Erol, and O. Arikan (2003), Regularized estimation of vertical total electron content from Global Positioning System data, J. Geophys. Res., 109 (A12), 1469, doi: 10.1029/2003JA009605. |
[20] | Arikan, F., C. B. Erol, and O. Arikan (2004), Regularized estimation of vertical total electron content from GPS data for a desired time period, Radio Sci., 39, RS6012, doi: 10.1029/2004RS003061. |
[21] | Arikan, F., O. Arikan, and C. B. Erol (2007), Regularized estimation of TEC from GPS data for certain mid-latitude stations and comparison with the IRI model, Adv. in Space Res., 39, 867–874, doi: 10.1016/ j.asr.2007.01.082. |
[22] | Erol C. B., Arikan F., and Arikan O., 2002a. A new technique for TEC estimation, paper presented at IEEE IGARSS Symp., Toronto, Canada. |
[23] | Horvath. I and Essex. E. A., 2000. Using observations from the GPS and TOPEX satellites to investigate night-time TEC enhancement at mid-latitudes in the southern hemisphere during a low sunspot number period, Journal of Atmospheric and solar Terrestrial-Physics, Vol. 62, No. 5, pp. 371-391. |
[24] | Integrated Publishing, \Variations In The Ionosphere." http://www.tpub.com/neets/book10/40h.htm. Retrieved October 19, 2015. |
[25] | S. Skone, \Lecture Notes of ENGO 633," tech. rep., University of Calgary, 2007. |
[26] | Shimeis A, Amory-Mazaudier C, Fleury R, Mahrous AM, Hassan AF., 2014, Transient variations of vertical total electron content over some African stations from 2002 to 2012. Advance in Space Research. doi: 10.1016/j.asr.2014.07.038. |
[27] | Yekoye A. T., 2015, Patterns of GPS-TEC variation over low-latitude regions (African sector) during the deep solar minimum (2008 to 2009) and solar maximum (2012 to 2013) phases, Earth, Planets and Space (2015) 67: 35 DOI 10.1186/s40623-015-0206-2. |
APA Style
Shambel Gizachew, Belay Sitotaw, Gizaw Mengistu Tsidu. (2019). Comparison of Global Vertical Total Electron Content from Various Global Data Centers. International Journal of Astrophysics and Space Science, 7(4), 41-48. https://doi.org/10.11648/j.ijass.20190704.12
ACS Style
Shambel Gizachew; Belay Sitotaw; Gizaw Mengistu Tsidu. Comparison of Global Vertical Total Electron Content from Various Global Data Centers. Int. J. Astrophys. Space Sci. 2019, 7(4), 41-48. doi: 10.11648/j.ijass.20190704.12
AMA Style
Shambel Gizachew, Belay Sitotaw, Gizaw Mengistu Tsidu. Comparison of Global Vertical Total Electron Content from Various Global Data Centers. Int J Astrophys Space Sci. 2019;7(4):41-48. doi: 10.11648/j.ijass.20190704.12
@article{10.11648/j.ijass.20190704.12, author = {Shambel Gizachew and Belay Sitotaw and Gizaw Mengistu Tsidu}, title = {Comparison of Global Vertical Total Electron Content from Various Global Data Centers}, journal = {International Journal of Astrophysics and Space Science}, volume = {7}, number = {4}, pages = {41-48}, doi = {10.11648/j.ijass.20190704.12}, url = {https://doi.org/10.11648/j.ijass.20190704.12}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijass.20190704.12}, abstract = {In this study, the inter-comparison of various global vertical total electron contents are derived from Global Positioning System (GPS) networks worldwide. Based on observation data obtained from global network of dual frequency, the ionospheric variability on one full year, 2008 is studied through the vertical electron conten distribution GPS. The comparisons are aimed at comparability of the different vertical total electron content data sets in terms of absolute magnitude, capturing diurnal, seasonal variability globally. Total electron content (TEC) values were compared by computing the TEC differences among different stations. Most of the data sets exhibit expected diurnal variability with some differences on the absolute magnitude of vertical total electron content moreover, seasonally, the variability is also comparable. In this observation, highest vertical electron contents are observed on the Jet prolusion laboratory. It is followed by International global service, vertical total electron content and the least is observed on the Polytechnical University data sets.}, year = {2019} }
TY - JOUR T1 - Comparison of Global Vertical Total Electron Content from Various Global Data Centers AU - Shambel Gizachew AU - Belay Sitotaw AU - Gizaw Mengistu Tsidu Y1 - 2019/10/23 PY - 2019 N1 - https://doi.org/10.11648/j.ijass.20190704.12 DO - 10.11648/j.ijass.20190704.12 T2 - International Journal of Astrophysics and Space Science JF - International Journal of Astrophysics and Space Science JO - International Journal of Astrophysics and Space Science SP - 41 EP - 48 PB - Science Publishing Group SN - 2376-7022 UR - https://doi.org/10.11648/j.ijass.20190704.12 AB - In this study, the inter-comparison of various global vertical total electron contents are derived from Global Positioning System (GPS) networks worldwide. Based on observation data obtained from global network of dual frequency, the ionospheric variability on one full year, 2008 is studied through the vertical electron conten distribution GPS. The comparisons are aimed at comparability of the different vertical total electron content data sets in terms of absolute magnitude, capturing diurnal, seasonal variability globally. Total electron content (TEC) values were compared by computing the TEC differences among different stations. Most of the data sets exhibit expected diurnal variability with some differences on the absolute magnitude of vertical total electron content moreover, seasonally, the variability is also comparable. In this observation, highest vertical electron contents are observed on the Jet prolusion laboratory. It is followed by International global service, vertical total electron content and the least is observed on the Polytechnical University data sets. VL - 7 IS - 4 ER -