All Stories

  1. Ionospheric plasma disturbances generated by naturally occurring large-scale anomalous heat sources

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, April 2017, Elsevier

    Dr Sixto A. Gonzalez

  2. Role of conjugate and local terminators for ionospheric dynamics at Arecibo

    Article • August 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Sixto A. Gonzalez

  3. Ionospheric model-observation comparisons:Elayer at Arecibo Incorporation of SDO-EVE solar irradiances

    Article • Journal of Geophysical Research Space Physics, May 2014, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  4. Forward Acceleration of Ionospheric Electrons by NAU 40.75-kHz Whistler Waves Over Arecibo

    Article • IEEE Transactions on Plasma Science, November 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Sixto A. Gonzalez

  5. Fine structure in midlatitude sporadic E layers

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, October 2013, Elsevier

    Dr Sixto A. Gonzalez

  6. Whistler wave-induced ionospheric plasma turbulence: Source mechanisms and remote sensing

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, October 2013, Elsevier

    Dr Sixto A. Gonzalez

  7. The F region and topside ionosphere response to a strong geomagnetic storm at Arecibo

    Article • Journal of Geophysical Research Space Physics, August 2013, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  8. Topside ionosphere over Areciboduring the recent extreme solar minimum

    Article • Journal of Geophysical Research Space Physics, July 2013, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  9. Identification of large-scale billow-like structure in the neutral sodium layer over Arecibo

    Article • Journal of Geophysical Research Atmospheres, October 2012, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  10. Midnight ionosphere collapse at Arecibo and its relationship to the neutral wind, electric field, and ambipolar diffusion

    Article • Journal of Geophysical Research Atmospheres, August 2012, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  11. DYNAMIC INSTABILITY IN sporadic-E LAYERS

    Article • Journal of Geophysical Research Atmospheres, August 2012, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  12. Long-term changes in the thermospheric neutral winds over Arecibo: Climatology based on over three decades of Fabry-Perot observations

    Article • Journal of Geophysical Research Atmospheres, January 2012, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  13. Response of the topside ionosphere over Arecibo to a moderate geomagnetic storm

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, July 2011, Elsevier

    Dr Sixto A. Gonzalez

  14. A modeling study offoF2andhmF2parameters measured by the Arecibo incoherent scatter radar and comparison with IRI model predictions for solar cycles 21, 22, and 23

    Article • Journal of Geophysical Research Atmospheres, March 2011, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  15. Using incoherent scatter radar to investigate the neutral wind long-term trend over Arecibo

    Article • Journal of Geophysical Research Atmospheres, February 2011, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  16. Incoherent scatter radar observation of E-region vertical electric field at Arecibo

    Article • Geophysical Research Letters, January 2011, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  17. Database of electron density profiles from Arecibo Radar Observatory for the assessment of ionospheric models

    Article • Space Weather, January 2011, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  18. Assessment of Ionospheric Models package for the Community Coordinated Modeling Center: Climatology

    Article • Space Weather, January 2011, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  19. Radar and Optical Observations of Irregular Midlatitude Sporadic E Layers Beneath MSTIDs

    Article • January 2011, Springer Science + Business Media

    Dr Sixto A. Gonzalez

  20. The effects of Bhatnagar-Gross-Krook, Brownian, and hard-sphere ion-neutral collision models on the incoherent scatter spectrum in the E region

    Article • Journal of Geophysical Research Atmospheres, January 2011, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  21. Quiet time ionospheric variability over Arecibo during sudden stratospheric warming events

    Article • Journal of Geophysical Research Atmospheres, September 2010, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  22. SporadicElayer observations over Arecibo using coherent and incoherent scatter radar: Assessing dynamic stability in the lower thermosphere

    Article • Journal of Geophysical Research Atmospheres, December 2009, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  23. InferringDregion parameters using improved incoherent scatter radar techniques at Arecibo

    Article • Journal of Geophysical Research Atmospheres, December 2008, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  24. Design and implementation of a multi-purpose radar controller using open-source tools

    Article • May 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Sixto A. Gonzalez

  25. Ion gyroresonance observations at Jicamarca revisited

    Article • Geophysical Research Letters, July 2007, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  26. Molecular ion composition measurements in theF1 region at Arecibo

    Article • Journal of Geophysical Research Atmospheres, June 2007, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  27. A Comparison of Long-term Meridional Neutral Winds extracted from Arecibo Incoherent Scatter Radar with the Neutral Winds Obtained via Fabry Perot Interferometry

    Article • April 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Sixto A. Gonzalez

  28. Derivation of neutral oxygen density under charge exchange in the midlatitude topside ionosphere

    Article • Journal of Geophysical Research Atmospheres, November 2006, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  29. ARECIBO ION ENERGY BALANCE

    Article • Journal of Geophysical Research Atmospheres, October 2006, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  30. Gravity waves and momentum fluxes in the mesosphere and lower thermosphere using 430 MHz dual-beam measurements at Arecibo: 1. Measurements, methods, and gravity waves

    Article • Journal of Geophysical Research Atmospheres, September 2006, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  31. Gravity waves and momentum fluxes in the mesosphere and lower thermosphere using 430 MHz dual-beam measurements at Arecibo: 2. Frequency spectra, momentum fluxes, and variability

    Article • Journal of Geophysical Research Atmospheres, September 2006, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  32. High-resolution electron temperature measurements using the plasma line asymmetry

    Article • Geophysical Research Letters, September 2006, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  33. Generation of metastable helium and the 1083 nm emission in the upper thermosphere

    Article • Journal of Geophysical Research Atmospheres, August 2005, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  34. Instantaneous electric field measurements and derived neutral winds at Arecibo

    Article • Geophysical Research Letters, June 2005, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  35. An energy balance study of the lower topside ionosphere using the Arecibo incoherent scatter radar and heating facilities

    Article • Journal of Geophysical Research Atmospheres, January 2005, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  36. Modeling of airglow and ionospheric parameters at Arecibo during quiet and disturbed periods in October 2002

    Article • Journal of Geophysical Research Atmospheres, January 2005, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  37. Application of linear regularization methods to Arecibo vector velocities

    Article • Journal of Geophysical Research Atmospheres, January 2005, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  38. Imaging the structure of a large-scale TID using ISR and TEC data

    Article • Geophysical Research Letters, May 2004, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  39. Solar cycle variability of nighttime topside helium ion concentrations over Arecibo

    Article • Journal of Geophysical Research Atmospheres, January 2004, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  40. A continuum of gravity waves in the Arecibo thermosphere?

    Article • Geophysical Research Letters, January 2004, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  41. Mid-latitude plasma and electric field measurements during space weather month, September 1999

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, July 2003, Elsevier

    Dr Sixto A. Gonzalez

  42. Ionospheric data assimilation: recovery of strong mid-latitudinal density gradients

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, July 2003, Elsevier

    Dr Sixto A. Gonzalez

  43. Comparison of the He+layer observed over Arecibo during solar maximum and solar minimum with CTIP model results

    Article • Journal of Geophysical Research Atmospheres, January 2003, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  44. First observations of an F-region turbulent upwelling coincident with severe E-region plasma and neutral atmosphere perturbations

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, August 2002, Elsevier

    Dr Sixto A. Gonzalez

  45. Tomographic studies of aeronomic phenomena using radio and UV techniques

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, August 2002, Elsevier

    Dr Sixto A. Gonzalez

  46. Inferred vertical ion velocities associated with intermediate layers

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, August 2002, Elsevier

    Dr Sixto A. Gonzalez

  47. WITHDRAWN: A study of the role of ion-molecule chemistry in the formation of sporadic sodium layers

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, June 2002, Elsevier

    Dr Sixto A. Gonzalez

  48. A study of the role of ion–molecule chemistry in the formation of sporadic sodium layers

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, May 2002, Elsevier

    Dr Sixto A. Gonzalez, Professor John M. C. Plane

  49. Ionospheric topography maps using multiple-wavelength all-sky images

    Article • Journal of Geophysical Research Atmospheres, December 2001, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  50. Secular variability of the geocoronal Balmer‐alpha brightness: magnetic activity and possible human influences

    Article • Journal of Geophysical Research Atmospheres, December 2001, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  51. Periodic variations of geocoronal Balmer‐alpha brightness due to solar‐driven exospheric abundance variations

    Article • Journal of Geophysical Research Atmospheres, December 2001, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  52. Kilometer‐scale layered structures inside spread‐F

    Article • Geophysical Research Letters, November 2001, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  53. Corection of the Jicamarca electron-ion temperature ratio problem: Verifying the effect of electron Coulomb collisions on the incoherent scatter spectrum

    Article • Journal of Geophysical Research Atmospheres, November 2001, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  54. Descending layer variability over Arecibo

    Article • Journal of Geophysical Research Atmospheres, November 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  55. Measurements of the topside ionosphere over Arecibo during the total solar eclipse of February 26, 1998

    Article • Journal of Geophysical Research Atmospheres, October 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  56. On the electrical structure of airglow depletion/Height layer bands over Arecibo

    Article • Geophysical Research Letters, September 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  57. Advection of the equatorial anomaly over Arecibo by small-storm related disturbance dynamo electric fields

    Article • Geophysical Research Letters, September 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  58. Intercomparisons of total electron content measurements using the Arecibo Incoherent Scatter Radar and GPS

    Article • Geophysical Research Letters, September 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  59. 50 MHz radar observations of mid-latitude E-region irregularities at Camp Santiago, Puerto Rico

    Article • Geophysical Research Letters, September 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  60. Comparison between SUPIM simulations and measured TEC for the January, 1997 storm

    Article • Geophysical Research Letters, September 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  61. Coherent and incoherent scatter radar observations during intense mid‐latitude spread F

    Article • Geophysical Research Letters, September 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  62. Upper atmospheric observations at the Arecibo Observatory: Examples obtained using new capabilities

    Article • Journal of Geophysical Research Atmospheres, August 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  63. Simultaneous atomic and ion layer enhancements observed in the mesopause region over Arecibo during the Coqui II Sounding Rocket Campaign

    Article • Geophysical Research Letters, February 2000, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  64. Coordinated incoherent scatter radar study of the January 1997 storm

    Article • Journal of Geophysical Research Atmospheres, November 1999, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  65. The effect of electron Coulomb collisions on the incoherent scatter spectrum in theFregion at Jicamarca

    Article • Journal of Geophysical Research Atmospheres, October 1999, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  66. Radar chain study of the May, 1995 storm

    Article • Journal of Atmospheric and Solar-Terrestrial Physics, February 1999, Elsevier

    Dr Sixto A. Gonzalez

  67. The effects of meridional neutral winds on the O+-H+transition altitude over Arecibo

    Article • Journal of Geophysical Research Atmospheres, December 1998, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  68. Evidence for recombination as a significant source of metastable helium

    Article • Journal of Geophysical Research Atmospheres, June 1998, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  69. Simultaneous measurements of O+ and H+temperatures in the topside ionosphere over Arecibo

    Article • Geophysical Research Letters, November 1996, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  70. Detection of He+layering in the topside ionosphere over Arecibo during equinox solar minimum conditions

    Article • Geophysical Research Letters, September 1996, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  71. Correction to “Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru” and “Equatorial thermospheric wind changes during the solar cycle: Measurements at Arequipa, Peru from 1983 to 1990” by Biondi et al.

    Article • Journal of Geophysical Research Atmospheres, January 1995, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  72. Correction to “Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru” and “Equatorial thermospheric wind changes during the solar cycle: Measurements at Arequipa, Peru from 1983 to 1990”

    Article • Journal of Geophysical Research Atmospheres, January 1995, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  73. Ion composition of the topside equatorial ionosphere during solar minimum

    Article • Journal of Geophysical Research Atmospheres, April 1992, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  74. Equatorial thermospheric wind changes during the solar cycle: Measurements at Arequipa, Peru, from 1983 to 1990

    Article • Journal of Geophysical Research Atmospheres, September 1991, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  75. Average vertical and zonal F region plasma drifts over Jicamarca

    Article • Journal of Geophysical Research Atmospheres, August 1991, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  76. Seasonal variations in the equatorial thermospheric wind measured at Arequipa, Peru

    Article • Journal of Geophysical Research Atmospheres, August 1990, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez

  77. Solar cycle variations inFregion electrodynamic drifts at Arecibo

    Article • Journal of Geophysical Research Atmospheres, January 1990, American Geophysical Union (AGU)

    Dr Sixto A. Gonzalez