Publications

2023

• Zhao, D., Zhang, X., Li, W., Wang, Q., Hancock, C. M., Li, C., et al. (2023), Extracting ionospheric phase scintillation indicator from GNSS observations with 30-s sampling interval in the high-latitude region., GPS Solutions. Springer Science and Business Media LLC. link


• Reid, B., Themens, D. R., McCaffrey, A., Jayachandran, P. T., Johnsen, M. G., & Ulich, T. (2023), A-CHAIM: Near-Real-Time Data Assimilation of the High Latitude Ionosphere With a Particle Filter., Space Weather. American Geophysical Union (AGU). link


• Sori, T., Shinbori, A., Otsuka, Y., Nishioka, M., & Perwitasari, S. (2023), Dependence of Ionospheric Responses on Solar Wind Dynamic Pressure During Geomagnetic Storms Using Global Long-Term GNSS-TEC Data, ournal of Geophysical Research: Space Physics. American Geophysical Union (AGU) link


• Runge, E., Langille, J., Zawada, D., Bourassa, A., & Degenstein, D. (2023), Stratospheric trace gas profile retrievals from balloon-borne limb imaging of mid-infrared emission spectra, Copernicus GmbH link


• Wang, X., Huang, Y., Qu, Z., Vaillancourt, P. A., Yau, M., Feng, J., et al. (2023), Convectively Transported Water Vapor Plumes in the Midlatitude Lower Stratosphere, Journal of Geophysical Research: Atmospheres. American Geophysical Union (AGU) link


• Larson, B., Koustov, A. V., Themens, D. R., & Gillies, R. G. (2023), Ionospheric electron density over Resolute Bay according to E-CHAIM model and RISR radar measurements, Advances in Space Research. Elsevier BV. link


• Dorrian, G., Fallows, R., Wood, A., Themens, D. R., Boyde, B., Krankowski, A., et al. (2023), LOFAR observations of substructure within a travelling ionospheric disturbance at mid-latitude, Space Weather. American Geophysical Union (AGU) link


• Koloskov, O., Kashcheyev, A., Bogomaz, O., Sopin, A., Gavrylyuk, B., & Zalizovski, A. (2023), Performance Analysis of a Portable Low-Cost SDR-Based Ionosonde., Atmosphere. MDPI AG. link

2022

• Meziane, K., Hamza, A. M., & Jayachandran, P. T. (2022), Turbulence signatures in high-latitude ionospheric scintillation., Journal of Geophysical Research: Space Physics. link


• Yasyukevich, Y., & Demyanov, V. (2022), Methodology for GNSS Capability Analysis., Space Weather Impact on GNSS Performance. Springer International Publishing link


• Demyanov, V. (2022), GNSS Overview. Space Weather Impact on GNSS Performance, Springer International Publishing. link


• Paznukhov, V. V., Sopin, A. A., Galushko, V. G., Kashcheyev, A. S., Koloskov, A. V., Yampolski, Y. M., & Zalizovski, A. V. (2022), Occurrence and Characteristics of Traveling Ionospheric Disturbances in the Antarctic Peninsula Region, Journal of Geophysical Research: Space Physics. American Geophysical Union (AGU link


• Prikryl, P., Gillies, R. G., Themens, D. R., Weygand, J. M., Thomas, E. G., & Chakraborty, S. (2022), Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere, Annales Geophysicae. Copernicus GmbH. link


• Edemskiy, I. K., & Yasyukevich, Y. V. (2022), Auroral Oval Boundary Dynamics on the Nature of Geomagnetic Storm, Remote Sensing. MDPI AG link


• Koustov, A. V., Ullrich, S., Ponomarenko, P. V., Ghalamkarian Nejad, M., Themens, D. R., & Gillies, R. G. (2022), Occurrence Rates of SuperDARN Ground Scatter Echoes and Electron Density in the Ionosphere, Radio Science. American Geophysical Union (AGU) link


• Wang, Y., Jayachandran, P. T., Ma, Y. -Z., Zhang, Q. -H., Xing, Z. -Y., Ruohoniemi, J. M., et al. (2022), Dependencies of GPS scintillation indices on the ionospheric plasma drift and rate of change of TEC around the dawn sector of the polar ionosphere., Journal of Geophysical Research: Space Physics. link


• Alfonsi, L., Bergeot, N., Cilliers, P. J., De Franceschi, G., Baddeley, L., Correia, E., et al. (2022), Review of Environmental Monitoring by Means of Radio Waves in the Polar Regions: From Atmosphere to Geospace, Surveys in Geophysics link


• Olugbon, B., Oyeyemi, E. O., & Kashcheyev, A. (2022), Case Studies on the Day-to-Day Variability in the Occurrence of Post-Sunset Equatorial Spread F., Space Weather. American Geophysical Union (AGU) link


• Zhao, D., Wang, Q., Li, W., Shi, S., Quan, Y., Hancock, C. M., et al. (2022), Validating Ionospheric Scintillation Indices Extracted from 30s-Sampling-Interval GNSS Geodetic Receivers with Long-Term Ground and In-Situ Observations in High-Latitude Regions, Remote Sensing. MDPI AG. link


• Meziane, K., Hamza, A. M., & Jayachandran, P. T. (2022), On the Moments of Probability Distribution Function of Amplitude Scintillation in the Polar Region, Journal of Geophysical Research: Space Physics. American Geophysical Union (AGU) link


• Sori, T., Otsuka, Y., Shinbori, A., Nishioka, M., & Perwitasari, S. (2022), Geomagnetic conjugacy of plasma bubbles extending to mid-latitudes during a geomagnetic storm on March 1, 2013, Earth, Planets and Space. Springer Science and Business Media LLC link


• Samuel K. Kristoffersen, William E. Ward, Jeffery Langille, William A. Gault, Aaron Power, Ian Miller, Alan Scott, Dennis Arsenault, Marine Favier, Valerie Losier, Shaojun Lu, Rui Zhang, and Chunmin Zhang (2022), Wind imaging using simultaneous fringe sampling with field-widened Michelson interferometers, Appl. Opt. 61, 6627-6641 link


• Thayaparan, T., Villeneuve, H., Themens, D. R., Reid, B., Warrington, M., Cameron, T., & Fiori, R. (2022), Frequency Management System (FMS) for Over-the-Horizon Radar (OTHR) using a Near-Real-Time Ionospheric Model, IEEE Transactions on Geoscience and Remote Sensing link


• Shinbori, A., Otsuka, Y., Sori, T., Nishioka, M., Perwitasari, S., Tsuda, T., & Nishitani, N. (2022), Electromagnetic conjugacy of ionospheric disturbances after the 2022 Hunga Tonga-Hunga Ha'apai volcanic eruption as seen in GNSS-TEC and SuperDARN Hokkaido pair of radars observations, Earth, Planets and Space. Springer Science and Business Media LLC link


• Lamarche, L. J., Deshpande, K. B., & Zettergren, M. D. (2022), Observations and modeling of scintillation in the vicinity of a polar cap patch, Journal of Space Weather and Space Climate. EDP Sciences. link


• Dorrian, G., Fallows, R. A., Wood, A. G., Themens, D. R., Boyde, B., Krankowski, A., et al. (2022), LOFAR observations of refractive scattering from substructure within a traveling ionospheric disturbance at mid-latitude, Wiley link


• Nie, W., Rovira-Garcia, A., Li, M., Fang, Z., Wang, Y., Zheng, D., & Xu, T. (2022), The Mechanism for GNSS-Based Kinematic Positioning Degradation at High?Latitudes Under the March 2015 Great Storm., Space Weather. American Geophysical Union (AGU) link


• J Lamarche, L., B Deshpande, K., & D Zettergren, M. (2022), Observations and Modeling of Scintillation in the Vicinity of a Polar Cap Patch, Journal of Space Weather and Space Climate. EDP Sciences link


• Wang, Y., Themens, D. R., Wang, C., Ma, Y., Reimer, A., Varney, R., et al. (2022), Simultaneous observations of a Polar Cap Sporadic-E Layer by Twin Incoherent Scatter Radars at Resolute, Journal of Geophysical Research: Space Physics. American Geophysical Union (AGU) link


• Prikryl, P., Gillies, R. G., Themens, D. R., Weygand, J. M., Thomas, E. G., & Chakraborty, S. (2022), Multi-instrument observations of polar cap patches and traveling ionospheric disturbances generated by solar wind Alfven waves coupling to the dayside magnetosphere, Copernicus GmbH link


• Yaysukevich, Yu., Astafyeva, E., Oinats, A., Vesnin, A., Yasyukevich, A., Vasiliev, A., et al. (2022), Multi-instrumental View of the Auroral Oval, Photonics & Electromagnetics Research Symposium (PIERS). IEEE. link


• Zhao, D., Li, W., Li, C., Tang, X., Wang, Q., Hancock, C. M., et al. (2022), Ionospheric Phase Scintillation Index Estimation Based on 1 Hz Geodetic GNSS Receiver Measurements by Using Continuous Wavelet Transform, Space Weather. American Geophysical Union (AGU) link


• Nie, W., Wang, Y., Rovira-Garcia, A., Zheng, D., & Xu, T. (2022), Effect of the polar cap ionospheric sporadic-E layer on GNSS-based positioning: a case study at Resolute Bay, Canada, September 5, 2012., GPS Solutions. link


• Themens, D. R., Watson, C., Zagar, N., Vasylkevych, S., Elvidge, S., McCaffrey, A., et al. (2022), Global propagation of ionospheric disturbances associated with the 2022 Tonga Volcanic Eruption., Geophysical Research Letters link


• Zhao, D., Li, W., Wang, Q., Liu, X., Li, C., Hancock, C. M., et al. (2022), Statistical study on the characterization of phase and amplitude scintillation events in the high-latitude region during 2014-2020 based on ISMR, Advances in Space Research. Elsevier BV link


• Themens, D. R., Reid, B., Elvidge, S. (2022), ARTIST Ionogram Autoscaling Confidence Scores: Best Practices, URSI Radio Science Letters. International Union of Radio Science (URSI) link


• Cherniak, Iurii, Zakharenkova, I. (2022), Development of the storm-induced ionospheric irregularities at equatorial and middle latitudes during the 25-26 August 2018 geomagnetic storm, pace Weather. American Geophysical Union (AGU) link


• Conroy, James P., Deshpande, K., Scales, W., Zaghloul, A. (2022), Statistical Analysis of Refractive and Diffractive Scintillation at High Latitudes, Radio Science link


• Cameron, T. G., Fiori, R. A. D., Themens, D. R., Warrington, E. M., Thayaparan, T., & Galeschuk, D. (2022), Evaluation of the effect of sporadic-E on high frequency radio wave propagation in the Arctic, Journal of Atmospheric and Solar-Terrestrial Physics. Elsevier BV link


• Shinbori, A., Otsuka, Y., Sori, T., Tsugawa, T., & Nishioka, M. (2022), Statistical behavior of large-scale ionospheric disturbances from high latitudes to mid-latitudes during geomagnetic storms using 20-year GNSS-TEC data: Dependence on season and storm intensity, Journal of Geophysical Research: Space Physics. American Geophysical Union (AGU) link

2021

• McCaffrey, A., & Jayachandran, P. T. (2021), Comments on "Stochastic TEC Structure Characterization" by Charles Rino, Yu Morton, Brian Breitsch, and Charles Carrano, Journal of Geophysical Research: Space Physics , 124 , https://doi.org/10.1029, Journal of Geophysical Research: Space Physics. American Geophysical Union (AGU) link


• Ruck, J. J., & Themens, D. R. (2021), Impacts of Auroral Precipitation on HF Propagation: A Hypothetical Over-the-Horizon Radar Case Study, Space Weather. American Geophysical Union (AGU) link


• Migoya-Orue, Y., Alazo-Cuartas, K., Kashcheyev, A., Amory-Mazaudier, C., Radicella, S., Nava, B., et al. (2021), B2 Thickness Parameter Response to Equinoctial Geomagnetic Storms, Sensors. MDPI AG link


• Hong, J., Chung, J., Ham, Y., Kwak, Y., & Kim, Y. H. (2021), Inferring the Horizontal Speed of an Ionospheric Irregularity From a Single GPS Scintillation Receiver at High Latitudes, Journal of Geophysical Research: Space Physics. American Geophysical Union (AGU) link


• Themens, D. R., Elveidge, S. (2021), Visualizing the Ensemble Kalman Filter, URSI Radio Science Letters. International Union of Radio Science (URSI) link


• Forsythe, V. V., Azeem, I., Crowley, G., & Themens, D. R. (2021), Ionospheric Vertical Correlation Distances: Estimation From ISR Data, Analysis, and Implications For Ionospheric Data Assimilation, Radio Science. American Geophysical Union (AGU) link


• Themens, D. R., Reid, B., Jayachandran, P. T., Larson, B., Koustov, A. V., Elvidge, S., et al (2021), E-CHAIM as a model of Total Electron Content: Performance and Diagnostics, Space Weather. American Geophysical Union (AGU) link


• Liu, L., Morton, Y. J., & Liu, Y. (2021), Machine Learning Prediction of Storm-time High-latitude Ionospheric Irregularities from GNSS-derived ROTI Maps, Geophysical Research Letters link


• Madhanakumar, M., Kashcheyev, A., & Jayachandran, P. T. (2021), On the Dependence of Amplitude and Phase Scintillation Indices on Magnetic Field Aligned Angle: A Statistical Investigation at High Latitudes, IEEE Geoscience and Remote Sensing Letters, 1-5 link


• Song, K., Meziane, K., Kashcheyev, A., & Jayachandran, P. T. (2021), Multifrequency Observation of High Latitude Scintillation: A Comparison With the Phase Screen Model, IEEE Transactions on Geoscience and Remote Sensing, 1-9 link


• Zhao, D., Li, W., Li, C., Hancock, C. M., Roberts, G. W., & Wang, Q. (2021), Analysis on the ionospheric scintillation monitoring performance of ROTI extracted from GNSS observations in high-latitude regions, Advances in Space Research. Elsevier BV. link


• Prikryl, P., Rusin, V., & Prikryl, E. A. (2021), High-Rate Precipitation Occurrence Modulated by Solar Wind High-Speed Streams, Atmosphere, 12(9), 1186 link


• Watson, C., Themens, D. R., & Jayachandran, P. T. (2021), Development and Validation of Precipitation Enhanced Densities for the Empirical Canadian High Arctic Ionospheric Model (E-CHAIM), Space Weather link


• Johnson, B. T. (2021), Sensing the Arctic: Situational awareness and the future of northern security, International Journal: Canada's Journal of Global Policy Analysis. SAGE Publications link


• Runge, E., Langille, J., Schentag, C., Bourassa, A., Letros, D., Loewen, P., et al (2021), A balloon-borne imaging Fourier transform spectrometer for atmospheric trace gas profiling, Review of Scientific Instruments, 92(9), 094502 link


• Prikryl, P., Rusin, V., Prikryl, E. A., Stastny, P., Turna, M., & Zelenakova, M. (2021), Heavy rainfall, floods, and flash floods influenced by high-speed solar wind coupling to the magnetosphere-ionosphere-atmosphere system, Annales Geophysicae, 39(4), 769-793 link


• Themens, D. R., Reid, B., Jayachandran, P. T., Larson, B., Koustov, A. V., Elvidge, S., et al. (2021), E-CHAIM as a model of Total Electron Content: Performance and Diagnostics, Wiley. link


• Zhai, C., Shi, X., Wang, W., Hartinger, M. D., Yao, Y., Peng, W., et al. (2021), Characterization of High-m ULF Wave Signatures in GPS TEC Data., Geophysical Research Letters link


• Okoh, D., Obafaye, A., Rabiu, B., Seemala, G., Kashcheyev, A., & Nava, B. (2021), New results of ionospheric Total Electron Content measurements from a low-cost Global Navigation Satellite System receiver and comparisons with other data sources., Advances in Space Research link


• Demyanov, V., & Yasyukevich, Y. (2021), Space weather: risk factors for Global Navigation Satellite Systems, Solar-Terrestrial Physics, 7(2), 28-47 link


• Nishimura, Y., Mrak, S., Semeter, J. L., Coster, A. J., Jayachandran, P. T., Groves, K. M., et al. (2021), Evolution of mid‐latitude density irregularities and scintillation in North America during the 7‐8 September 2017 storm., Journal of Geophysical Research: Space Physics link


• Meziane, K., Kashcheyev, A., Jayachandran, P. T., & Hamza, A. M. (2021), A Bayesian inference‐based empirical model for scintillation indices for high–latitude., Space Weather. link


• Conroy, J. P., Deshpande, K., Kunduri, B., Varney, R. H., Scales, W., & Zaghloul, A. (2021), Ionospheric Scintillation Data Inversion to Characterize the Structures Associated With a Series of Polar Cap Patches, Radio Science, 56(8) link


• Thayyil, J. P., McCaffrey, A. M., Wang, Y., Themens, D. R., Watson, C., Reid, B., et al. (2021), Global Positioning System (GPS) Scintillation Associated with a Polar Cap Patch., Remote Sensing link


• Sori, T., Shinbori, A., Otsuka, Y., Tsugawa, T., & Nishioka, M. (2021), The Occurrence Feature of Plasma Bubbles in the Equatorial to Midlatitude Ionosphere During Geomagnetic Storms Using Long-Term GNSS-TEC Data, Journal of Geophysical Research: Space Physics, 126(5) link


• Shinbori, A., Otsuka, Y., Tsugawa, T., Nishioka, M., Kumamoto, A., Tsuchiya, F., et al. (2021), Relationship Between the Locations of the Midlatitude Trough and Plasmapause Using GNSS-TEC and Arase Satellite Observation Data, Journal of Geophysical Research: Space Physics, 126(5) link


• Olugbon, B., Oyeyemi, E. O., Kascheyev, A., Rabiu, A. B., Obafaye, A. A., Odeyemi, O. O., & Adewale, A. O. (2021), Daytime Equatorial Spread F‐Like Irregularities Detected by HF Doppler Receiver and Digisonde., Space Weather link


• Wang, Y., Jayachandran, P. T., Themens, D. R., McCaffrey, A. M., Zhang, Q.-H., David, S., & Chadwick, R. (2021), A Case Study of Polar Cap Sporadic-E Layer Associated with TEC Variations, Remote Sensing link


• Yan, T., Langille, J. A., Ward, W. E., Gault, W. A., Scott, A., Bell, A., et al. (2021), A compact static birefringent interferometer for the measurement of upper atmospheric winds: concept, design and lab performance, Copernicus GmbH. link


• Inaba, Y., Shiokawa, K., Oyama, S., Otsuka, Y., Connors, M., Schofield, I., et al. (2021), Multi‐Event Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner Magnetosphere During Non‐Storm‐Time Substorms, Journal of Geophysical Research: Space Physics link


• Wang, Y., Cao, Z., Xing, Z., Zhang, Q., Jayachandran, P. T., Oksavik, K., et al. (2021), GPS Scintillations and TEC Variations in Association with A Polar Cap Arc, Journal of Geophysical Research: Space Physics. link


• Guo, K., Vadakke Veettil, S., Weaver, B. J., & Aquino, M. (2021), Mitigating high latitude ionospheric scintillation effects on GNSS Precise Point Positioning exploiting 1-s scintillation indices., Journal of Geodesy, 95(3). link


• Zhang, J., & Liu, L. (2021), Mining noise data for monitoring Arctic permafrost by using GNSS interferometric reflectometry, Polar Science, 100649 link


• Vadakke Veettil, S., & Aquino, M. (2021), Statistical models to provide meaningful information to GNSS users in the presence of ionospheric scintillation, GPS Solutions, 25(2) link


• Yasyukevich, Yu. V., Yasyukevich, A. S., & Astafyeva, E. I. (2021), How modernized and strengthened GPS signals enhance the system performance during solar radio bursts, GPS Solutions, 25(2) link


• Radicella, S. M., Alazo-Cuartas, K., Migoya-Orue, Y., & Kashcheyev, A. (2021), Thickness parameters in the empirical modeling of bottomside electron density profiles., Advances in Space Research. link

2020

• Shaikh, M. M., Gopakumar, G., Hussein, A., Kashcheyev, A., & Fernini, I. (2020), Daytime GNSS scintillation due to Es over Arabian Peninsula during low solar activity., Results in Physics, 20, 103761. link


• Morton, Y. J., Yang, Z., Breitsch, B., Bourne, H., & Rino, C. (2020), Ionospheric Effects, Monitoring, and Mitigation Techniques. Position, Navigation, and Timing Technologies in the 21st Century., Position, Navigation, and Timing Technologies in the 21st Century. Wiley. link


• Meziane, K., Kashcheyev, A., Jayachandran, P. T., & Hamza, A. M. (2020), On the latitude-dependence of the GPS phase variation index in the polar region, 2020 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE) link


• Burne, S., Bertucci, C., Mazelle, C. X., Morales, L. F., Meziane, K., Espley, J. R., et al (2020), The Structure of the Martian Quasi-perpendicular Supercritical Shock as seen by MAVEN, Wiley link


• Forsythe, V. V., Azeem, I., Crowley, G., & Themens, D. R. (2020), Ionospheric Vertical Correlation Distances: Estimation From ISR Data, Analysis and Implications For Ionospheric Data Assimilation, Radio Science link


• Prikryl, P., Weygand, J. M., Ghoddousi-Fard, R., Jayachandran, P. T., Themens, D. R., McCaffrey, A. M., et al. (2020), Temporal and spatial variations of GPS TEC and phase during auroral substorms and breakups, Polar Science, 100602 link


• Orus-Perez, R., Nava, B., Parro, J., & Kashcheyev, A. (2020), ESA UGI (Unified-GNSS-Ionosphere): An Open-source software to compute precise ionosphere estimates, Advances in Space Research link


• Ma, Y., Zhang, Q., Jayachandran, P. T., Oksavik, K., Lyons, L. R., Xing, Z., et al. (2020), Statistical study of the relationship between ion upflow and field-aligned current in the topside ionosphere for both hemispheres during geomagnetic disturbed and quiet time., Journal of Geophysical Research: Space Physics. link


• Zalizovski, A., Koloskov, O., Kashcheyev, A., Kashcheyev, S., Yampolski, Y., et al. (2020), Doppler vertical sounding of the ionosphere at the Akademik Vernadsky station., Ukrainian Antarctic Journal, (1), 56-68. link


• Meziane, K., Kashcheyev, A., Patra, S., Jayachandran, P. T., & Hamza, A. M. (2020), Solar cycle variations of GPS amplitude scintillation for the polar region, Space Weather link


• Zhang, J., Liu, L., & Hu, Y. (2020), Global Positioning System interferometric reflectometry (GPS-IR) measurements of ground surface elevation changes in permafrost areas in northern Canada., The Cryosphere, 14(6), 1875-1888. link


• Swarnalingam, N., Wu, D., & Themens, D. R. (2020), Comparison and evaluation of a bottom-up GPS-RO electron density retrieval for D and E regions using radar observations and models., Journal of Atmospheric and Solar-Terrestrial Physics, 105333. link


• Rusin, V., Prikryl, P., & Prikryl, E. A. (2020), White-light corona structure observed by naked eye and processed images., Monthly Notices of the Royal Astronomical Society. link


• Negale, M., Holmes, J., Parris, R., Ober, D., Dao, E., Kelly, R., et al. (2020), Using Data Assimilation to Reconstruct High-Latitude Polar Cap Patches., Radio Science, 55(6). link


• Yasyukevich, Y. V., Kiselev, A. V., Zhivetiev, I. V., Edemskiy, I. K., Syrovatskii, S. V., Maletckii, B. M., & Vesnin, A. M. (2020), SIMuRG: System for Ionosphere Monitoring and Research from GNSS, GPS Solutions, 24(3) link


• Koustov, A. V., Ullrich, S., Ponomarenko, P. V., Gillies, R. G., Themens, D. R., & Nishitani, N. (2020), Comparison of SuperDARN peak electron density estimates based on elevation angle measurements to ionosonde and incoherent scatter radar measurements., Earth, Planets and Space, 72(1). link


• Themens, D. R., Jayachandran, P. T., Reid, B., & McCaffrey, A. M. (2020), The Limits of Empirical Electron Density Modeling: Examining the Capacity of E-CHAIM and the IRI for Modeling Intermediate (1- to 30-Day) Timescales at High Latitudes, Radio Science, 55(4) link

2019

• Wang, Y., Zhang, Q. -H., Ma, Y. -Z., Jayachandran, P. T., Xing, Z. -Y., N., B., & Zhang, S. -R. (2019), Polar ionospheric large-scale structures and dynamics revealed by TEC keogram extracted from TEC maps, Journal of Geophysical Research: Space Physics link


• Yamazaki, Y., Matthias, V., Miyoshi, Y., Stolle, C., Siddiqui, T., Kervalishvili, G., et al. (2019), September 2019 Antarctic sudden stratospheric warming: quasi-6-day wave burst and ionospheric effects., Earth and Space Science Open Archive link


• Kashcheyev, A., & Nava, B. (2019), Validation of NeQuick 2 Model Topside Ionosphere and Plasmasphere Electron Content Using COSMIC POD TEC., Journal of Geophysical Research: Space Physics link


• Goodwin, L. V., Nishimura, Y., Zou, Y., Shiokawa, K., & Jayachandran, P. T. (2019), Mesoscale Convection Structures Associated with Airglow Patches Characterized using Cluster-Imager Conjunctions, Journal of Geophysical Research: Space Physics link


• Themens, D. R., Jayachandran, P. T., & McCaffrey, A. M. (2019), Validating the performance of the Empirical Canadian High Arctic Ionospheric Model (E-CHAIM) with in situ observations from DMSP and CHAMP, Journal of Space Weather and Space Climate, 9, A21 link


• Perry, G. W., Watson, C., Howarth, A. D., Themens, D. R., Foss, V., Langley, R. B., & Yau, A. W. (2019), Topside ionospheric disturbances detected using radio occultation measurements during the August 2017 solar eclipse., Geophysical Research Letters link


• Flynn, C. D., McCaffrey, A. M., Jayachandran, P. T., & Langley, R. B. (2019), Discovery of new code interference phenomenon in GPS observables, GPS Solutions, 23(3) link


• Themens, D. R., Jayachandran, P. T., McCaffrey, A. M., Reid, B., & Varney, R. H. (2019), A bottomside parameterization for the Empirical Canadian High Arctic Ionospheric Model (E?CHAIM), Radio Science link


• dos Santos Prol, F., Themens, D.R., Hernandez-Pajares, M. et al. (2019), Linear Vary-Chap Topside Electron Density Model with Topside Sounder and Radio-Occultation Data, Surv Geophys link


• Prikryl, P., Nikitina, L., & Rusin, V (2019), Rapid intensification of tropical cyclones in the context of the solar wind-magnetosphere-ionosphere-atmosphere coupling, Journal of Atmospheric and Solar-Terrestrial Physics, 183, 36-60 link


• Sieradzki, R., & Paziewski, J. (2019), GNSS-based analysis of high latitude ionospheric response on a sequence of geomagnetic storms performed with ROTI and a new relative STEC indicator, Journal of Space Weather and Space Climate, 9, A5 link


• McCaffrey, A. M., & Jayachandran, P. T. (2019), Determination of the Refractive Contribution to GPS Phase "Scintillation", Journal of Geophysical Research: Space Physics link

2018

• Yasyukevich, Y., Vesnin, A, Perevalova, N. (2018), SibNet - Siberian Global Navigation Satellite System Network: Current state, Solar-Terrestrial Physics, 4(4), 63-72 link


• Vadakke Veettil, S., Aquino, M., Spogli, L., & Cesaroni, C. (2018), A statistical approach to estimate Global Navigation Satellite Systems (GNSS) receiver signal tracking performance in the presence of ionospheric scintillation, Journal of Space Weather and Space Climate, 8, A51. link


• McGranaghan, R. M., Mannucci, A. J., Wilson, B., Mattmann, C. A., & Chadwick, R. (2018), New Capabilities for Prediction of High-Latitude Ionospheric Scintillation: A Novel Approach With Machine Learning, Space Weather, 16(11), 1817-1846 link


• Koustov, A. V., Ponomarenko, P. V., Graf, C. J., Gillies, R. G., & Themens, D. R. (2018), Optimal F Region Electron Density for the PolarDARN Radar Echo Detection Near the Resolute Bay Zenith, Radio Science, 53(9), 1002-1013 link


• Yasyukevich, Y., Astafyeva, E., Padokhin, A., Ivanova, V., Syrovatskii, S., & Podlesnyi, A. (2018), The 6 September 2017 X-class solar flares and their impacts on the ionosphere, GNSS and HF radio wave propagation, Space Weather link


• Spencer, E., Vadepu, S. K., Srinivas, P., Patra, S., & Horton, W. (2018), The dynamics of geomagnetic substorms with the WINDMI model., Earth, Planets and Space, 70(1) link


• Mushini, S. C., Skone, S., Spanswick, E., Donovan, E., & Najmafshar, M. (2018), Proxy index derived from All Sky Imagers for space weather impact on GPS, Space Weather link


• D'Angelo, G., Piersanti, M., Alfonsi, L., Spogli, L., Clausen, L. B. N., Coco, I., et al. (2018), The response of high latitude ionosphere to the 2015 St. Patrick's day storm from in situ and ground based observations, Advances in Space Research link


• Ma, Y.-Z., Zhang, Q.-H., Xing, Z.-Y., Jayachandran, P. T., Moen, J., Heelis, R. A., & Wang, Y. (2018), Combined contribution of solar illumination, solar activity, and convection to ion upflow above the polar cap, Journal of Geophysical Research: Space Physics link


• Kreemer, C., Hammond, W. C., & Blewitt, G. (2018), A Robust Estimation of the 3D Intraplate Deformation of the North American Plate from GPS., Journal of Geophysical Research: Solid Earth link


• Wang, Y., Zhang, Q.-H., Jayachandran, P. T., Moen, J., Xing, Z.-Y., Chadwick, R., Lester, M. (2018), Experimental evidence on the dependence of the standard GPS phase scintillation index on the ionospheric plasma drift around noon sector of the polar ionosphere, Journal of Geophysical Research: Space Physics link


• Themens, D. R., Jayachandran, P. T., Bilitza, D., Erickson, P. J., Haggstrom, I., Lyashenko, M. V.,Pustovalova, L. (2018), Topside Electron Density Representations for Middle and High Latitudes: A Topside Parameterization for E-CHAIM Based On the NeQuick, Journal of Geophysical Research: Space Physics link


• Watson, C., Langley, R. B., Themens, D. R., Yau, A. W., Howarth, A. D., & Jayachandran, P. T (2018), Enhanced Polar Outflow Probe (e-POP) ionospheric radio occultation measurements at high latitudes: Receiver bias estimation and comparison with ground-based observations., Radio Science link

2017

• McCaffrey, A. M., Jayachandran, P. T., Langley, R. B., & Sleewaegen, J.-M. (2017), On the accuracy of the GPS L2 observable for ionospheric monitoring., GPS Solutions, 22(1) link


• Durgonics, Tibor (2017), Multi-Instrument Observations of Physical Processes in the Arctic Ionosphere and Derived Applications., Kgs. Lyngby : Technical University of Denmark (DTU), 2017. 264 p link


• Themens, D. R., Jayachandran, P. T., & Varney, R. H. (2017), Examining the use of the NeQuick bottomside and topside parameterizations at high latitudes, Advances in Space Research link


• McCaffrey, A. M., and P. T. Jayachandran (2017), Spectral characteristics of auroral region scintillation using 100 Hz sampling, GPS Solutions link


• Jayachandran, P. T., A. M. Hamza, K. Hosokawa, H. Mezaoui, and K. Shiokawa (2017), GPS amplitude and phase scintillation associated with polar cap auroral forms, Journal of Atmospheric and Solar-Terrestrial Physics, 164, 185-191 link


• Zhang, Q.-H., et al. (2017), Polar cap hot patches: Enhanced density structures different from the classical patches in the ionosphere, Geophys. Res. Lett., 44 link


• Themens D. R., P. T. Jayachandran, I. Galkin, and C. Hall (2017), The Empirical Canadian High Arctic Ionospheric Model (E-CHAIM): NmF2 and hmF2, J. Geophys. Res. Space Physics, 122 link


• 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) 1984-1991 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, 11278-1285 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