Publications

2017

  • McCaffrey, A. M., and P. T. Jayachandran (2017), Observation of Sub-Second Variations in Auroral Region Total Electron Content using 100 Hz sampling of GPS observables, Journal of Geophysical Research: Space Physics link

  • Athieno R., P. T. Jayachandran, and D. R. Themens (2017), A Neural Network based foF2 model for a single station in the polar cap, Radio Sci., 52 link

  • Mezaoui, H., A. M. Hamza, and P. T. Jayachandran (2017), Dynamic analysis of the polar ionosphere using the GPS signal: Toward an optimization of the cutoff scale, Radio Science, 52(2), 271-281 link

  • Anthony M. McCaffrey, P.T. Jayachandran, D.R. Themens, R.B. Langley (2017), GPS receiver code bias estimation: A comparison of two methods, Adv. Space Res. 59 (2017) 19841991 link

  • Zou, Y., Y. Nishimura, L. R. Lyons, and K. Shiokawa (2017), Localized Polar Cap Precipitation in Association with Non-storm Time Airglow Patches, Geophysical Research Letters, 43 link

2016

  • Prikryl, P., et al (2016), GPS phase scintillation at high latitudes during the geomagnetic storm of 17-18 March 2015, J. Geophys. Res. Space Physics, 121, 10,448-10,465 link

  • Prasad, R., S. Kumar, and P. T. Jayachandran (2016), Receiver DCB estimation and GPS vTEC study at a low latitude station in the South Pacific, J. Atmos. Solar. Terr. Physics, 149, 120-130 link

  • Watson, C., P. T. Jayachandran, and J. W. MacDougall (2016), GPS TEC variations in the polar cap ionosphere: Solar wind and IMF dependence, J. Geophys. Res. Space Physics, 121 link

  • Sreeja, V (2016), Impact and mitigation of space weather effects on GNSS receiver performance, Geoscience Letters, 3(1), doi:10.1186/s40562-016-0057-0 link

  • Athieno, R., and P. T. Jayachandran (2016), MUF variability in the Arctic region: A statistical comparison with the ITU-R variability factors, Radio Sci., 5, 112781285 link

  • Liu, H., J. Yue, Y. Su, and X. Zhan (2016), Ameliorating calculation of ionospheric amplitude scintillation index from under-sampled phase measurement, Advances in Space Research, doi:10.1016/j.asr.2016.06.036 link

  • Wang, Y., Q. H. Zhang, P. T. Jayachandran, M. Lockwood, S.-R. Zhang, J. Moen, Z. Y. Xing, Y. Z. Ma, and M. Lester (2016), A comparison between large-scale irregularities and scintillations in the polar ionosphere, Geophysical Research Letters, doi:10.1002/2016gl069230. link

  • Clausen, L. B. N., J. I. Moen, K. Hosokawa, and J. M. Holmes (2016), GPS scintillations in the high latitudes during periods of dayside and nightside reconnection, Journal of Geophysical Research: Space Physics, 121(4), 3293-3309, doi:10.1002/2015ja022199 link

  • Watson, C., Jayachandran, P.T., and MacDougall, J.W (2016), Characteristics of GPS TEC variations in the polar cap ionosphere, Journal of Geophysical Research: Space Physics, doi:10.1002/2015JA022275 link

  • Themens, D. R., and P. T. Jayachandran (2016), Solar Activity Variability in the IRI at high latitudes: Comparisons with GPS Total Electron Content, Journal of Geophysical Research: Space Physics, doi:10.1002/2016ja022664 link

  • Watson, C., P. T. Jayachandran, H. J. Singer, R. J. Redmon, and D. Danskin (2016), GPS TEC response to Pc4 "giant pulsations", J. Geophys. Res. Space Physics, 121, doi:10.1002/2015ja022253 link

  • Jin, Y., X. Zhou, J. Moen, and M. Hairston (2016), The Auroral-Ionosphere TEC Response to an Interplanetary Shock, Geophys. Res. Lett., 42, doi:10.1002/2016GL067766. link

  • Zakharov, V. I., Y. V. Yasyukevich, and M. A. Titova (2016), Effect of magnetic storms and substorms on GPS slips at high latitudes, Cosmic Research, 54(1), 20-30, doi:10.1134/S0010952516010147 link

2015

  • Prikryl, P., Ghoddousi-Fard, R., Ruohoniemi, J. M. and Thomas, E. G. (2015), GPS Phase Scintillation at High Latitudes during Two Geomagnetic Storms, Auroral Dynamics and Space Weather (eds Y. Zhang and L. J. Paxton), John Wiley & Sons, Inc, Hoboken, NJ. link

  • P. Prikryl, P. T. Jayachandran, R. Chadwick, and T. D. Kelly (2015), Climatology of GPS phase scintillation at northern high latitudes for the period from 2008 to 2013, Ann. Geophys., 33, 531-545, doi:10.5194/angeo-33-531-2015. link

  • P. Prikryl, R. Ghoddousi-Fard, E. G. Thomas, J. M. Ruohoniemi, S. G. Shepherd, P. T. Jayachandran, D. W. Danskin, E. Spanswick, Y. Zhang, Y. Jiao, and Y. T. Morton (2015), GPS Phase Scintillation at high-latitudes during geomagnetic storms of 7-17 March 2012 - Part 1: The North American Sector, Ann. Geophys., 33, 637-656, doi:10.5194/angeo-33-637-2015. link

  • P. Prikryl, R. Ghoddousi-Fard, L. Spogli, C. N. Mitchell, G. Li, B. Ning, P. J. Cilliers, V. Sreeja, M. Acquino, M. Terkildsen, P. T. Jayachandran, Y. Jiao, Y. T. Morton, J. M. Ruohoniemi, E. G. Thomas, Y. ZhangA. T. Weatherwax, L. Alfonsi, G. De Franceschi, and V. Romano (2015), GPS phase scintillation at high latitudes during geomagnetic storms of 7-17 March 2012 - Part 2: interhemispheric comparison, Ann. Geophys., 33, 657-670, doi:10.5194/angeo-33-657-2015. link

  • R. Athieno, P. T. Jayachandran, D. R. Themens, and D. W. Danskin (2015), Comparison of observed and predicted MUF (3000)F2 in the polar cap region, Radio. Sci., 50, doi:10.1002/2015RS005725. link

  • H. Mezaoui, A. M. Hamza, and P. T. Jayachandran (2015), High-latitude Scintillations: Exploring the Castaing Distribution, J. Geophys. Res., Space Physics, J. Geophys Res. Space Physics, 120, doi:10.1002/2015JA021304. link

  • C. Watson, P. T. Jayachandran, H. J. Singer, R. J. Redmon, and D. W. Danskin (2015), Large amplitude GPS TEC variations associated with Pc5-6 magnetic field variations observed on the ground and at geosynchronous orbit, J. Geophys. Res. Space Physics, 120, doi:10.1002/2015JA021517. link

  • D. R. Themens, P. T. Jayachandran, and R. B. Langley (2015), The nature of GPS differential receiver bias variability: An examination in the polar cap region, J. Geophys. Res. Space Physics, 120, 8155-8175, doi:10.1002/2015JA021639. link

  • K. Hosokawa, J. I. Moen, P. T. Jayachandran, K. Shiokawa, and Y. Ostuka (2015), An unusual strolling motion of polar cap patches: an implication of the influence of tail reconnection on the nightside polar cap convection, J. Geophys. Res., Submitted. link

  • P. T. Jayachandran, J. W. MacDougall, Y. Ebihara, N. Sato, and A. S. Yikimatu (2015), Response of the equatorward boundary of the ion auroral oval to the N-S transition of the interplanetary magnetic field, JASTP, Submitted. link

2014

  • R. Burston and P. T. Jayachandran (2014), Effect of grid boundary expansion to include one additional data source on ionospheric imaging accuracy, IEEE Trasn. Geo. and Rem. Sens., doi:10.1109/TGRS.2013.2295653. link

  • R. Burston, K. Hodges, I. Astin, and P. T. Jayachandran (2014), Automated identification and tracking of polar-cap plasma patches at solar minimum, Ann. Geophys., 32, 197-206, doi:10.5194/angeo-32-197-2014. link

  • D. R. Themens, P. T. Jayachandran, M. J. Nicolls, and J. W. MacDougall (2014), A top to bottom evaluation of IRI 2007 within the polar cap, J. Geophys. Res., Space Physics, 119, doi:10.1002/2014JA020052. link

  • Datta-Barua, S., T. Walter, G. S. Bust, and W. Wanner (2014), Effects of solar cycle 24 activity on WAAS navigation, Space Weather, 12(1), 46-63, doi:10.1002/2013sw000982. link

  • H. Mezaoui, A. M. Hamza, and P. T. Jayachandran (2014), Investigating high-latitude ionospheric turbulence using global positioning system data, Geophys Res., Lett., 41, doi:10.1002/2014GL061331. link

  • P. Prikryl, P. T. Jayachandran, S. C. Mushini, and I. G. Richardson (2014), High-latitude GPS phase scintillation and cycle slips during high-speed solar wind streams and interplanetary coronal mass ejections: A superposed epoch analysis, Earth, Planets and Space, 66:62 doi:10.1186/1880-5981-66-62. link

  • P. Kieft, M. Aquino, and A. Donaldson (2014), Using ordinary kriging for the creation of scintillation maps, doi:10.5772/58781. link

  • Y. Su, H. Liu, J. Yue, Y. Yang (2014), Characterization of ionospheric amplitude scintillations using wavelet entropy detrended GNSS data, Advances in Space Research, doi:10.1016/j.asr.2014.08.012. link

  • M. Ghezelbash, A. V. Koustov, D. R. Themens, and P. T. Jayachandran (2014), Seasonal and diurnal variations of PolarDARN F region echo occurrence in the polar cap and their causes, J. Geophys. Res., Space Physics, 119, 10,426-10,439, doi:10.1002/2014JA020726. link

  • A. V. Koustov, P. V. Ponomarenko, M. Ghezelbash, D. R. Themens, and P. T. Jayachandran (2014), Electron density and electric field over Resolute Bay and F region echo detection with the Rankin Inlet and Inuvik SuperDARN radars, Radio Sci.,49, 1194-1205, doi:10.1002/2014RS005579. link

2013

  • P. Prikryl, R. Ghoddousi-Fard, S. R. kunduri, E. G. Thomas, A. J. Coster, P. T. Jayachandran, E. Spanswick, and D. W. Danskin (2013), GPS phase scintillation and proxy index at high-latitudes during a moderate geomagnetic storm, Ann. Geophys., 31, 805, doi:10.5194/angeo-31-805-2013. link

  • P. Prikryl, V. Sreeja, M. Aquino, P. T. Jayachandran (2013), Probabilistuc forecasting of ionospheric scintillation and GNSS receiver signal tracking performance at high latitudes, Annals of Geophysics, 56, 2, R0222, doi:10.4401/ag-6219. link

  • P. Prikryl, Y. Zhang, Y. Ebihara, R. Ghoddousi-Fard, P. T. Jayachandran, J. Kinrade, C. N. Mitchell, A. T. Weatherwax, G. Bust, P. J. Cilliers, L. Spogli, L. Alfonsi, V. Romano, B. Ning, G. Li, M. Jarvis, D. W. Danskin, E. Spanswick, E. Donovan, and M. Terkildsen (2013), An interhemespheric comparison of GPS phase scintillation with auroral emission observed at the South pole and from the DMSP satellite, Annals of Geophysics, 56, R0216, doi:10.4401/ag-6227. link

2012

  • Rodger, C. J., M. A. Clilverd, A. J. Kavanagh, C. E. J. Watt, P. T. Verronen, and T. Raita (2012), Contrasting the responses of three different ground-based instruments to energetic electron precipitation, Radio Science, 47(2), doi:10.1029/2011rs004971. link

  • D. R. Themens, P. T. Jayachandran, R. B. Langley, J. W, MacDougall, and M. J. Nicolls (2012), Determining Receiver Biases in GPS-derived Total Electron Content in the Auroral Oval and Polar Cap region Using Ionosonde measurements, GPS solutions, doi:10.1007/s10291-012-0284-6. link

  • P. T. Jayachandran, K. Hosokowa, K. Shiokawa, Y. Otsuka, C. Watson, S. C. Mushini, J. W. MacDougall, P. Prikryl, R. Chadwick, and T. D. Kelly (2012), GPS total electron content variations associated with poleward moving sun aligned arcs, J. Geophys. Res., 117, A05310, doi:10.1029/2011JA017423. link

  • D. Mori, A. V. Koustov, P. T. Jayachandran, and N. Nishitani (2012), Resolute Bay CADI ionosonde drifts, PolarDARN HF velocities and SuperDARN cross polar cap potential, Rad. Sci., 47, RS3003, doi:10.1029/2011RS004947. link

  • P. Prikryl, P. T. Jayachandran, S. C. Mushini, and I. G. Richardson (2012), Towards probabilistic forecasting of high-latitude GPS phase scintillation, Space Weather, 10, S08005, doi:10.1029/2012SW000800. link

2011

  • C. Watson, P. T. Jayachandran, E. Spanswick, E. F. Donovan, and D. W. Danskin (2011), GPS TEC technique for observation of the evolution of substorm particle injection, . Geophys. Res., 116, A00I90, doi:10.1029/2010JA015732. link

  • J. W. MacDougall and P. T. Jayachandran (2011), Solar terminator and auroral sources for traveling ionospheric disturbances in the midlatitude F region, J. Atmos. Solar. Terr. Phys., 1364, doi:10.1016/j.jastp.2011.10.009. link

  • P. Prikryl, P. T. Jayachandran, S. C. Mushini, and R. Chadwick (2011), Climatology of GPS phase scintillation and HF radar backscatter for the high-latitude ionosphere under solar minimum conditions, Ann. Geophys., 29, 377, doi:10.5194/angeo-29-377-2011. link

  • S. C. Mushini, P. T. Jayachandran, R. B. Langley, J. W. MacDougall, and D. Pokhotelov (2011), Improved amplitude and phase scintillation indices derived from wavelet detrended high latitude GPS data, GPS Solut., doi:10.1007/s10291-011-0238-4. link

  • P. Prikryl, L. Spogli, P. T. Jayachandran, J. Kinrade, C. N. Mitchell, B. Ning, G. Li, P. J. Cilliers, M. Terkildsen, D. W. Danskin, E. Spanswick, E. Donovan, A. T. Weatherwax, W. A. Bristow, L. Alfonsi, G. De Franceschi, V. Romano, C. M. Ngwira, and B. D. L. Opperman (2011), Interhemespheric comparison of GPS phase scintillation at high latitudes during the magnetic-cloud-induced geomagnetic storm of 5-7 April 2010, Ann. Geophys., 29, 2287, doi:10.5194/angeo-29-2287-2011. link

  • J. W. MacDougall, M. A. Abdu, I. Batista, R. Buriti, A. F. Medeiros, P. T. Jayachandran, and G. Borba (2011), Spaced transmitter measurements of medium scale traveling ionospheric disturbances near the equator, Geophys. Res. Lett., 38, L16806, doi:10.1029/2011GL048598. link

  • P. T. Jayachandran, C. Watson, I. J. Rae, J. W. MacDougall, D. W. Danskin, R. Chadwick, T. D. Kelly, P. Prikryl, K. Meziane, and K. Shiokawa (2011), High-latitude GPS TEC changes associated with a sudden magnetospheric compression, Geophys. Res. Lett., 38, L23104, doi:10.1029/2011GL050041. link

2010

  • A. V. Dmitriev, P. T. Jayachandran, and L-C. Tsai (2010), Elliptical model of cut-off boundaries for the solar energetic particles measured by POES satellites in December 2006, J. Geophys. Res., 115, A12244, doi:10.1029/2010JA015380. link

  • P. V. Ponomarenko, J.-P.St. Maurice, G. C. Hussey, and A. V. Koustov (2010), HF ground scatter from the polar cap: Ionospheric propgation and ground surface effects, J. Geophys. Res., 115, A10310, doi:10.1029/2010JA015828 link

  • Pokhotelov, D., P. T. Jayachandran, C. N. Mitchell, J. W. MacDougall, and M. H. Denton (2010), GPS tomography in the polar cap: comparison with ionosondes and in-situ spacecraft data, GPS Sol., doi: 10.1007/s10291-010-0170-z. link

  • Pokhotelov, D., P. T. Jayachandran, C. N. Mitchell, and M. H. Denton (2010), High-latitude ionospheric response to co-rotating interaction region- and coronal mass ejection-driven geomagnetic storms revealed by GPS tomography and ionosondes, Proc. R. Soc. A, doi:10.1098/rspa.2010.0080. link

  • Prikryl, P., P. T. Jayachandran, S. C. Mushini, D. Pokhotelov, J. W. MacDougall., E. Donovan, E. Spanswick, and J.-P. St-Maurice (2010), GPS TEC, Scintillations and cycle slips observed at high latitudes during solar minimum, Ann. Geophys., 28, 1307-1316, doi:10.5194/angeo-28-1307-2010. link

2009

  • Jayachandran, P.T., K. Hosokawa, J. W. MacDougall., S. Mushini, R. B. Langley, and K. Shiokawa (2009), GPS total electron content variations associated with a polar cap arc, J. Geophys. Res., 114, A12304, doi:10.1029/2009ja014916. link

  • MacDougall, J. W., G. Li, and P. T. Jayachandran (2009), Traveling ionospheric disturbances near London, Canada, J. Atmos. Solar Terr. Physics, 71, 2077, doi:10.1016/j.jastp.2009.09.016. link

  • MacDougall, J. W., M. A. Abdu, I. Batista, P. Fegundes, Y. Sahai, and P. T. Jayachandran (2009), On the production of travelling ionospheric disturbances by gravity waves, J. Atmos. Solar Terr. Physics, 71, 2013, doi:10.1016/j.jastp.2009.09.006. link

  • Pokhotelov, D., C. N. Mitchell, P. T. Jayachandran, J. W. MacDougall, and M. H. Denton (2009), Ionospheric response to the CIR-driven geomagnetic storm of October 2007, J. Geophys. Res., 114, A12311, doi:10.1029/2009JA014216. link

  • Watson, C., and P. T. Jayachandran (2009), Azimuthal expansion of the dipolarization at geo-synchronous orbits associated with substorms, Annales Geophysicae 27, 1113-1118, doi:10.5194/angeo-27-1113-2009. link

  • Jayachandran, P. T., R. B. Langley, J. W. MacDougall, S. C. Mushini, D. Pokhotelov, A. M. Hamza, I. R. Mann, D. K. Milling, Z. C. Kale, R. Chadwick, T. Kelly, D. W. Danskin, and C. S. Carrano (2009), The Canadian high arctic ionospheric network (CHAIN), Radio Sci., 44, RS0A03, doi:10.1029/2008RS004046. link

  • Sadighi, S., P. T. Jayachandran, N. Jakowski, and J. W. Macdougall (2009), Validation of the CHAMP radio occultation data using the Canadian Advanced Digital Ionosonde in the polar regions, J. Adv. Space Res., doi:10.1016/j.asr.2009.07.016. link

  • Mushini, S. C., P. T. Jayachandran, R. B. Langley, J. W. MacDougall (2009), Use of varying shell heights derived from ionosonde data in calculating vertical total electron content (TEC) using GPS - New method, J. Adv. Space Res., doi:10.1016/j.asr.2009.07.015. link

2008

  • Pokhotelov, D., C. N. Mitchell, P. S. J. Spencer, M. R. Hairston, and R. A. Heelis (2008), Ionospheric storm time dynamics as seen by GPS tomography and in situ spacecraft observations, J. Geophys. Res., 113, A00A16, doi:10.1029/2008JA013109. link

  • Jayachandran, P. T., N. Sato, Y. Ebihara, A. S. Yukimatu, A. Kadokura, J. W. MacDougall, E. F. Donovan, and K. Liou (2008), Oscillations of the equatorward boundary of the ion auroral oval - radar observations, J. Geophys. Res., 113, A08208, doi:10.1029/2007JA012870. link

  • MacDougall, J. W., and P. T. Jayachandran (2008), Winter cross polar cap current estimation, Advances in Space Res., doi:10.1016/j.asr.2007.09.019. link

2007

  • Jayachandran, P. T., J. W. MacDougall, A. M. Hamza, and M. G. Henderson (2007), Observations of dipolarization at geosynchronous orbits and its response in the polar cap convection during extreme southward interplanetary magnetic field conditions, J. Geophys. Res., 112, A10216, doi:10.1029/2007JA012544. link

  • MacDougall, J., and P. T. Jayachandran (2007), Polar patches: Auroral zone precipitation effects, J. Geophys. Res., 112, A05312, doi:10.1029/2006JA011930. link

  • Jayachandran, P. T., and J. W. MacDougall (2007), Substorm time scales from polar cap convection measurements, Earth Planets Space, 59, 329-e33, doi:10.1186/BF03352026. link

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