H. Bahcivan, M. C. Kelley, and J. W. Cutler. Radar and rocket comparison of UHF radar scattering from auroral electrojet irregularities: Implications for a nanosatellite radar. J. Geophys. Res., volume 114,  2009 .

J. L. Chau, F. R. Galindo, C. J. Heinselman, and M. J. Nicolls. Meteor-head echo observations using an antenna compression approach with the 450 MHz Poker Flat Incoherent Scatter Radar. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 636-643,  2009 .

J. T. Fentzke, D. Janches, and J. J. Sparks. Latitudinal and seasonal variability of the micrometeor input function: A study using model predictions and observations from Arecibo and PFISR. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 653-661,  2009 .

B. Gustavsson, R. Newsome, T. B. Leyser, M. J. Kosch, L. Norin, M. McCarrick, T. Pedersen, and B. J. Watkins. First observations of X-mode suppression of O-mode HF enhancements at 6300 A . Geophys. Res. Lett., volume 36,  2009 .

K. Hosokawa, K. Shiokawa, Y. Otsuka, T. Ogawa, J.-P. St.-Maurice, G. J. Sofko, and D. A. Andre. Relationship between polar cap patches and field-aligned irregularities as observed with an all-sky airglow imager at Resolute Bay and the PolarDARN radar at Rankin Inlet. J. Geophys. Res., volume 114,  2009 .

K. Hosokawa, T. Tsugawa, K. Shiokawa, Y. Otsuka, T. Ogawa, and M. R. Hairston. Unusually elongated, bright airglow plume in the polar cap F region: Is it a tongue of ionization? Geophys. Res. Lett., volume 36, issue 7,  2009 .

K. Hosokawa, T. Kashimoto, S. Suzuki, K. Shiokawa, Y. Otsuka, and T. Ogawa. Motion of polar cap patches: A statistical study with all-sky airglow imager at Resolute Bay, Canada. J. Geophys. Res., volume 114,  2009 .

D. L. Hysell, G. Michhue, M. J. Nicolls, C. J. Heinselman, and M. F. Larsen. Assessing auroral electric field variance with coherent and incoherent scatter radar. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 697-707,  2009 .

D. Janches, D. C. Fritts, M. J. Nicolls, and C. J. Heinselman. Observations of D-region structure and atmospheric tides with PFISR during active aurora. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 688-696,  2009 .

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 .

S. L. Jones, M. R. Lessard, P. A. Fernandes, D. Lummerzheim, J. L. Semeter, C. J. Heinselman, K. A. Lynch, R. G. Michell, P. M. Kintner, H. C. Stenbaek-Nielsen, and K. Asamura. PFISR and ROPA observations of pulsating aurora. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 708-716,  2009 .

J. D. Kelly and C. J. Heinselman. Initial results from Poker Flat Incoherent Scatter Radar (PFISR). J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 635,  2009 .

M. J. Kosch, B. Gustavsson, C. Heinselman, T. Pedersen, M. T. Rietveld, J. Spaleta, A. Wong, W. Wang, C. Mutiso, B. Bristow, and J. Hughes. First incoherent scatter radar observations of ionospheric heating on the second electron gyro-harmonic. J. Atmos Solar-Terr. Phys., volume 71, issue 1, pages 1959-1966,  2009 .

D. J. Livneh, I. Seker, F. T. Djuth, and J. D. Mathews. Omnipresent vertically coherent fluctuations in the ionosphere with a possible worldwide-midlatitude extent. J. Geophys. Res., volume 114,  2009 .

L. R. Lyons, S. Zou, C. J. Heinselman, M. J. Nicolls, and P. C. Anderson. Poker flat radar observations of the magnetosphere-ionosphere coupling electrodynamics of the earthward penetrating plasma sheet following convection enhancements. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 717-728,  2009 .

L. R. Lyons, H.-J. Kim, X. Xing, S. Zou, D.-Y. Lee, C. Heinselman, M. J. Nicolls, V. Angelopoulos, D. Larson, J. McFadden, A. Runov, and K.-H. Fornacon. Evidence that solar wind fluctuations substantially affect global convection and substorm occurrence. J. Geophys. Res., volume 114,  2009 .

R. G. Michell, K. A. Lynch, C. J. Heinselman, and H. C. Stenbaek-Nielsen. High time resolution PFISR and optical observations of naturally enhanced ion acoustic lines. Ann. Geophys., volume 27, issue 4, pages 1457-1467,  2009 .

M. J. Nicolls, M. C. Kelley, R. H. Varney, and C. J. Heinselman. Spectral observations of polar mesospheric summer echoes at 33 cm (450 MHz) with the Poker Flat Incoherent Scatter Radar. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 662-674,  2009 .

E. Nossa, D. L. Hysell, C. T. Fallen, and B. J. Watkins. Radar observations of artificial E-region field-aligned irregularities. Ann. Geophys., volume 27, issue 7, pages 2699-2710,  2009 .

P. G. Richards, M. J. Nicolls, C. J. Heinselman, J. J. Sojka, J. M. Holt, and R. R. Meier. Measured and modeled ionospheric densities, temperatures, and winds during the international polar year. J. Geophys. Res., volume 114,  2009 .

A. Roy, S. J. Briczinski, J. F. Doherty, and J. D. Mathews. Genetic-Algorithm-Based Parameter Estimation Technique for Fragmenting Radar Meteor Head Echoes. IEEE Geoscience and Remote Sensing Letters, volume 6, pages 363-367,  2009 .

L. Sangalli, D. J. Knudsen, M. F. Larsen, T. Zhan, R. F. Pfaff, and D. Rowland. Rocket-based measurements of ion velocity, neutral wind, and electric field in the collisional transition region of the auroral ionosphere. J. Geophys. Res., volume 114,  2009 .

J. Semeter, T. Butler, C. Heinselman, M. Nicolls, J. Kelly, and D. Hampton. Volumetric imaging of the auroral ionosphere: Initial results from PFISR. J. Atmos Solar-Terr. Phys., volume 71, issue 6, pages 738-743,  2009 .

J. J. Sojka, M. J. Nicolls, C. J. Heinselman, and J. D. Kelly. The PFISR IPY observations of ionospheric climate and weather. J. Atmos. Solar-Terr. Phys., volume 71, issue 6, pages 771-785,  2009 .

J. J. Sojka, R. L. McPherron, A. P. van Eyken, M. J. Nicolls, C. J. Heinselman, and J. D. Kelly. Observations of ionospheric heating during the passage of solar coronal hole fast streams. Geophys. Res. Lett., volume 36, issue 1,  2009 .

J. J. Sparks, D. Janches, M. J. Nicolls, and C. J. Heinselman. Seasonal and diurnal variability of the meteor flux at high latitudes observed using PFISR. J. Atmos. Solar-Terr. Phys., volume 71, issue 6, pages 644-652,  2009 .

J. J. Sparks and D. Janches. Correction to “Latitudinal dependence of the variability of the micrometeor altitude distribution”. Geophys. Res. Lett., volume 36, issue 1,  2009 .

J. J. Sparks and D. Janches. Latitudinal dependence of the variability of the micrometeor altitude distribution. Geophys. Res. Lett., volume 36,  2009 .

S. Suzuki, K. Shiokawa, K. Hosokawa, K. Nakamura, and W. K. Hocking. Statistical characteristics of polar cap mesospheric gravity waves observed by an all-sky airglow imager at Resolute Bay, Canada. J. Geophys. Res., volume 114,  2009 .

N. Swarnalingam, W. K. Hocking, W. Singer, and R. Latteck. Calibrated measurements of PMSE strengths at three different locations observed with SKiYMET radars and narrow beam VHF radars. J. Atmos. Solar-Terr. Phys., volume 71, issue 1, pages 1807-1813,  2009 .

N. Swarnalingam, W. K. Hocking, and P. S. Argall. Radar efficiency and the calculation of decade-long PMSE backscatter cross-section for the Resolute Bay VHF radar. Ann. Geophys., volume 27, issue 4, pages 1643-1656,  2009 .

M. J. Taylor, Y. Zhao, P.-D. Pautet, M. J. Nicolls, R. L. Collins, J. Barker-Tvedtnes, C. D. Burton, B. Thurairajah, J. Reimuller, R. H. Varney, C. J. Heinselman, and K. Mizutani. Coordinated optical and radar image measurements of noctilucent clouds and polar mesospheric summer echoes. J. Atmos. Solar-Terr. Phys., volume 71, issue 6, pages 675-687,  2009 .

S. L. Vadas and M. J. Nicolls. Temporal evolution of neutral, thermospheric winds and plasma response using PFISR measurements of gravity waves. J. Atmos. Solar-Terr. Phys., volume 71, issue 6, pages 744-770,  2009 .

R. H. Varney, M. J. Nicolls, C. J. Heinselman, and M. C. Kelley. Observations of polar mesospheric summer echoes using PFISR during the summer of 2007. J. Atmos. Solar-Terr. Phys., volume 71, issue 3, pages 470-476,  2009 .

S. Zou, L. R. Lyons, M. J. Nicolls, C. J. Heinselman, and S. B. Mende. Nightside ionospheric electrodynamics associated with substorms: PFISR and THEMIS ASI observations. J. Geophys. Res., volume 114,  2009 .

S. Zou, L. R. Lyons, M. J. Nicolls, and C. J. Heinselman. PFISR observations of strong azimuthal flow bursts in the ionosphere and their relation to nightside aurora. J. Atmos. Solar-Terr. Phys., volume 71, issue 6, pages 729-737,  2009 .