Y. Wang, D. R. Themens, C. Wang, Y.-Z. Ma, A. Reimer, R. Varney, R. Gilies, Z.-Y. Xing, Q.-H. Zhang, and P. T. Jayachandran. Simultaneous Observations of a Polar Cap Sporadic-E Layer by Twin Incoherent Scatter Radars at Resolute. Journal of Geophysical Research: Space Physics, volume 127, issue 6,  2022 .

Y. Wang, P. T. Jayachandran, D. R. Themens, A. M. McCaffrey, Q.-H. Zhang, S. David, and R. Chadwick. A Case Study of Polar Cap Sporadic-E Layer Associated with TEC Variations. Remote Sensing, volume 13, issue 7,  2021 .

L. V. Goodwin, Y. Nishimura, Y. Zou, K. Shiokawa, and P. T. Jayachandran. Mesoscale Convection Structures Associated With Airglow Patches Characterized Using Cluster-Imager Conjunctions. Journal of Geophysical Research: Space Physics, volume 124, issue 9,  2019 .

D. R. Themens, P. Jayachandran, A. M. McCaffrey, B. Reid, and R. H. Varney. A Bottomside Parameterization for the Empirical Canadian High Arctic Ionospheric Model. Radio Science, volume 54, issue 5,  2019 .

C. Watson, R. B. Langley, D. R. Themens, A. W. Yau, A. D. Howarth, and P. T. Jayachandran. Enhanced Polar Outflow Probe ionospheric radio occultation measurements at high latitudes: Receiver bias estimation and comparison with ground‐based observations. Radio Science, American Geophysical Union, volume 53,  2018 .

D. R. Themens, P. Jayachandran, and R. H. Varney. Examining the use of the NeQuick bottomside and topside parameterizations at high latitudes. Advances in Space Research, American Geophysical Union, volume 61, issue 1, pages 287-294,  2018 .

D. R. Themens, P. T. Jayachandran, D. Bilitza, P. J. Erickson, I. Haggstrom, M. V. Lyashenko, B. Reid, R. H. Varney, and L. Pustovalova. 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, American Geophysical Union, volume 123,  2018 .

D. R. Themens, P. T. Jayachandran, and R. B. Langley. The nature of GPS differential receiver bias variability: An examination in the polar cap region. J. Geophys. Res., volume 120, pages 8155-8175,  2015 .

D. Themens, P. Jayachandran, M. J. Nicolls, and J. W. MacDougall. A Top to Bottom Evaluation of IRI-2007 within the Polar Cap. J. Geophys. Res., volume 119,  2014 .

P. T. Jayachandran, K. Hosokawa, K. Shiokawa, Y. Otsuka, C. Watson, S. C. Mushini, J. W. Macdougall, P. Prikryl, R. Chadwick, and T. D. Kelly. GPS total electron content variations associated with poleward moving Sun-aligned arcs. J. Geophys. Res., volume 117,  2012 .

D. R. Themens, P. T. Jayachandran, R. B. Langley, J. W. Macdougall, and M. J. Nicolls. Determining receiver biases in GPS-derived total electron content in the auroral oval and polar cap region using ionosonde measurements. GPS Solutions,  2012 .

P. T. Jayachandran, K. Hosokawa, J. W. Macdougall, S. Mushini, R. B. Langley, and K. Shiokawa. GPS total electron content variations associated with a polar cap arc. J. Geophys. Res., volume 114,  2009 .