Jan Sojka

Publications | Books

• Sojka, J.J, (2016). Heliophysics: Active Stars, Their Astrospheres, and Impacts on Planetary Environments: Heliophysics: Active Stars, Their Astrospheres, and Impacts on Planetary Environments. Cambridge University Press

Publications | Book Chapters

• Fang, T., Anderson, D., Fuller-Rowell, T., Akmaev, R., Codrescu, M., Millward, G., Sojka, J.J, Scherliess, L., Eccles, V., Retterer, J., others, , (2014). Comparative studies of theoretical models in the equatorial ionosphere. Modeling the Ionosphere-Thermosphere System, (eds J. Huba, R. Schunk and G. Khazanov), John Wiley & Sons, Ltd,
• Schunk, R., Scherliess, L., Sojka, J.J, Thompson, D.C, (2004). USU global ionospheric data assimilation models : Atmospheric and Environmental Remote Sensing Data Processing and Ulilization: An End-to-End System Perspective . Proc. Of SPIE
• Cade, III, W.B, Sojka, J.J, Zhu, L., Kamide, Y., (2003). A wavelet analysis of storm-substorm relationships: Disturbances in Geospace: The Storm-Substorm Relationship. Geophysical Monograph

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Journal Articles

Academic Journal

• Gardner, L., Schunk, R., Scherliess, L., Sojka, J.J, Zhu, L., (2014). Global Assimilation of Ionospheric Measurements-Gauss Markov model: Improved specifications with multiple data types. Space Weather, 12:12, 675–688.
• Yuan, T., Wang, J., Cai, X., Sojka, J.J, Rice, D., Oberheide, J., Criddle, N., (2014). Investigation of the seasonal and local time variations of the high-altitude sporadic Na layer (Nas) formation and the associated midlatitude descending E layer (Es) in lower E region. Journal of Geophysical Research: Space Physics, 119:7, 5985–5999.
• Fish, C.S, Swenson, C.M, Cowley, G., Barjatya, A., Neilsen, T., Gunther, J.H, Fullmer, R.R, Baktur, R., Sojka, J.J, (2014). Design, Development, Implementation, and On-orbit Performance of the Dynamic Ionosphere CubeSat Experiment Mission. Space Science Review, 181:1 - 4, 61 - 120. doi: doi:10.1007/S11214-014-0034-x
• Yuan, T., Fish, C., Sojka, J.J, Rice, D., Taylor, M., Mitchell, N., (2013). Coordinated investigation of summer time mid-latitude descending E layer (Es) perturbations using Na lidar, ionosonde, and meteor wind radar observations over Logan, Utah (41.7° N, 111.8° W). Journal of Geophysical Research: Atmospheres, 118:4, 1734–1746.
• Sojka, J.J, Schunk, R., Thompson, D., Scherliess, L., David, M., (2013). Ionospheric Weather at Mid-Latitudes. Midlatitude Ionospheric Dynamics and Disturbances, 181, 35.
• Fish, C., Wickwar, V.B, Thurairajah, B., Sojka, J.J, Berkey, F., Bailey, S., Yuan, T., Taylor, M.J, Mitchell, N., Hocking, W., (2013). Multi-year Observations of Mid-latitude Middle Atmospheric Winds, Waves, and Temperature associated with SSW Events over Northern Utah.
• Eccles, V., Thompson, J., Sojka, J.J, Vo, H., Gonzales, S., (2011). Assessment of Ionospheric Models Package for the Community Coordinates Modeling Center: Climatology. Space Weather, 9, doi: 10.1029/2010SW00596
• Patra, S., Spencer, E., Horton, W., Sojka, J.J, (2011). Study of Dst/Ring Curretn Recovery Times during Geomagnetic Storm Events using the WINDMI Model. JGR Space Physics, doi: 10.1029/2010JA015824
• Maslova, I., Kokoszka, P.S, Sojka, J.J, Zhu, L., (2010). Estimation of Sq variation by means of multiresolution and principal component analyses. Journal of Atmospheric and Solar-Terrestrial Physics, 72, 625-632.
• David, M., Sojka, J.J, (2010). Single-day dayside density enhancements over Europe: A survey of a half-century of ionosonde data. Journal of Geophysical Research, 115, doi: 10.1029/2010JA015711
• Maslova, I., Kokoszka, P.S, Sojka, J.J, Zhu, L., (2010). Statistical Significance Testing for the Association of Magnetometer Records at High-, Mid- and Low Latitudes During Substorm Days. Planetary and Space science, 58, 437-445.
• Rice, D.D, Eccles, J.V, Sojka, J.J, Raitt, J.W, Brady, J., Hunsucker, R.D, (2009). A Frequency Agile, Distributed Sensor System (FADSS) to address space weather effects upon ionospherically dependent systems. Radio Science, 44, doi: 10.1029/2008RS004083
• Rice, D.D, Hunsucker, R.D, Eccles, J.V, Sojka, J.J, Raitt, J.W, Brady, J.J, (2009). Characterizing the lower ionosphere with a space - weather - aware receiver matrix. Radio Science Bulletin, 20-32.
• Richards, P.G, Nicolls, M.J, Heinselman, C.J, Sojka, J.J, Holt, J.M, Meier, R.R, (2009). Measured and modeled ionospheric densities, temperatures, and winds during the international polar year. Journal of Geophysical Research, 114, doi: 10.1029/2009JA014625
• Sojka, J.J, McPherron, R.L, van Eyken, A.P, Nicolis, M.J, Heinselman, C.J, Kelley, J.D, (2009). Observations of ionospheric heating during the passage of solar coronal hole fast streams. Geophysical Research Letters, 36, doi: 10.1029/2009GL039064
• Thompson, D.C, Scherliess, L., Sojka, J.J, Schunk, R., (2009). Plasmasphere and upper ionosphere contributions and corrections during the assimilation of GPS slant TEC. Radio Science, 44, doi: 10.1029/2008RS004016
• Maslova, I., Kokoszka, P.S, Sojka, J.J, Zhu, L., (2009). Removal of nonconstant daily variation by means of wavelet and functional data analysis. Journal of Geophysical Research, 114, doi: 10.1029/2008JA013685
• Heelis, R.A, Sojka, J.J, David, M., Schunk, R., (2009). Storm time density enhancements in the middle-latitude dayside ionosphere . Journal of Geophysical Research, 114, doi: 10.1029/ 2008JA013690
• Sojka, J.J, Nicolls, M.J, Heinselman, C.J, Kelly, J.D, (2009). The PFISR IPY observations of ionospheric climate and weather. Journal of Atmonspheric and Solar-Terrestrial Physics, 71, 771-785. doi: 10.1016/j.jastp.2009.01.001
• Xu, Z., Zhu, L., Sojka, J.J, Kokoszka, P.S, (2009). Wavelet cross-spectrum analysis of the ring current using magnetic records from multiple low-latitude stations. Journal of Geophysical Research, 114, doi: 10.1029/2009JA014076
• Xu, Z., Zhu, L., Schunk, R., Sojka, J.J, Kokoszka, P.P, Jach, A., (2008). An Assessment of Study of the Wavelet-based Index of Magnetic Storm Activity (WISA) and its Comparison to the Dst Index. Journal of Atmonspheric Solar-Terrestrial Physics, 70, 1579-1588.
• Sojka, J.J, Schunk, R., Scherliess, L., Thompson, D.C, David, M., (2008). Assimilation of observations with models to better understand severe ionospheric weather at mid-latitudes . Midlatitude Ionospheric Dynamics and Disturbances, Geophysical Monograph 181, 35-49.
• Jee, G., Burns, A.G, Wang, W., Solomon, S.C, Schunk, R., Scherliess, L., Thompson, D.C, Sojka, J.J, Zhu, L., (2008). Driving the TING model with GAIM electron densities: ionospheric effects on the thermosphere . J. Geophys. Res., 113, doi: 10.1029/ 2007JA012580
• Kokoszka, P.S, Maslova, I., Sojka, J.J, Zhu, L., (2008). Testing for lack of dependence in functional linear model. Canadian Journal of Statistics, 36, 207-222.
• Sojka, J.J, Thompson, D.C, Scherliess, L., Schunk, R., Harris, T.J, (2007). Assessing Models for Ionospheric Weather Specifications Over Australia During the 2004 Climate and Weather of the Sun-Earth-System (CAWSES) Campaign. J. Geophys. Res., 112, A09306. doi: 10.1029/2006JA012048
• Jee, G., Burns, A.G, Wang, W., Solomon, S.C, Schunk, R., Scherliess, L., Thompson, D.C, Sojka, J.J, Zhu, L., (2007). Duration of an ionospheric data assimilation initialization of a coupled thermosphere-ionosphere model . Space Weather, 5, doi: 10.1029/2006SW000250
• Smithtro, C.G, Sojka, J.J, Berkey, T., Thompson, D., Schunk, R., (2006). Anomalous F region response to moderate solar flares. Radio Sci., 41, doi: 10.1029/2005RS003350
• McDonald, S.E, Basu, S., Basu, S., Groves, K.M, Valladares, C.E, Scherliess, L., Thompson, D.C, Schunk, R.W, Sojka, J.J, Zhu, L., (2006). Extreme longitudinal variability of plasma structuring in the equatorial ionosphere on a magnetically quiet equinoctial day. Radio Science, 38, doi: 10.1029/2005RS003366
• Sojka, J.J, Zhu, L., (2006). Multiple arcs: Evidence for an active ionospheric role in the M-I coupling. Adv. Space Res., 38, 1702-1706.
• Kokoszka, P., Maslova, I., Sojka, J.J, Zhu, L., (2006). Probability tails of wavelet coefficients of magnetometer records. J. Geophys. Res., 111
• Sojka, J.J, Smithtro, C., Schunk, R., (2006). Recent developments in ionosphere-thermosphere modeling with an emphasis on solar variability . Adv. Space Res., 37, 369-379.
• Thompson, D.C, Scherliess, L., Sojka, J.J, Schunk, R., (2006). The Utah State University Gauss-Markov Kalman Filter of the ionosphere: The effect of slant TEC and electron density profile data on model fidelity . J. Atmos. Solar-Terr. Phys., 68, 947-958.
• Scherliess, L., Schunk, R., Sojka, J.J, Thompson, D.C, Zhu, L., (2006). Utah State University Global Assimilation of Ionospheric Measurements Gauss-Markov Kalman filter model of the ionosphere: Model description and validation. J. Geophys. Res., 111, doi: 10.1029/2006JA011712
• Zhu, L., Schunk, R., Gee, J., Scherliess, L., Sojka, J.J, Thompson, D.C, (2006). Validation study of the Ionospheric Forecast Model (IFM) using the TOPEX TEC measurements . Radio Science, 41, doi: 10.1029/2005RS003336
• Jach, A., Kokoszka, P., Sojka, J.J, Zhu, L., (2006). Wavelet-based index of magnetic storm activity. J. Geophys. Res., 111
• Smithtro, C.G, Sojka, J.J, (2005). A new global average model of the coupled thermosphere and ionosphere. J. Geophys. Res., 110
• Zhu, L., Sojka, J.J, Schunk, R., (2005). Active ionospheric role in small-scale aurora structuring . J. Atmos. Solar-Terr. Phys., 67, 687-700.
• Smithtro, C.G, Sojka, J.J, (2005). Behavior of the ionosphere and thermosphere subject to extreme solar cycle conditions. J. Geophys. Res., 110
• Schunk, R., Scherliess, L., Sojka, J.J, Thompson, D.C, Zhu, L., (2005). Ionospheric weather forecasting on the horizon . Space Weather, 3:8, doi: 10.1029/2004SW000138
• Sojka, J.J, David, M., Schunk, R., van Eyken, A.P, (2005). Polar F-layer model-observation comparison: A neutral wind surprise . Annales Geophysicae, 23, 191-199.
• Schunk, R., Demars, H.G, Sojka, J.J, (2005). Propagating polar wind jets . J. Atmos. Solar-Terr. Phys., 67, 357-364.
• Sojka, J.J, David, M., Schunk, R., Foster, J.C, Vo, H.B, (2004). A modeling study of the F-region response to SAPS . J. Atmos. Solar-Terr. Phys., 66, 415-423.
• Scherliess, L., Schunk, R., Sojka, J.J, Thompson, D.C, (2004). Development of a physics-based reduced state Kalman filter for the ionosphere . Radio Sci., 39, doi: 10.1029/2002RS002797
• Schunk, R., Scherliess, L., Sojka, J.J, Thompson, D.C, Anderson, D.N, Codrescu, M., Minter, C., Fuller-Rowell, T.J, Heelis, R.A, Hairston, M., Howe, B., (2004). Global assimilation of ionospheric measurements (GAIM) . Radio Sci., 39, doi: 10.1029/2002RS002794
• Eccles, J.V, Hunsucker, R.D, Rice, D., Sojka, J.J, (2004). Space weather effects on mid-latitude HF propagation paths: Observations and a data-driven D-region model. Space Weather, 3
• Sojka, J.J, Rice, D., Eccles, J.V, Berkey, F.T, Kintner, P., Denig, W., (2004). Understanding mid-latitude space weather: Storm impacts observed at BLO on 31 March 2001. Space Weather, 2
• Sojka, J.J, Thompson, D.C, Schunk, R., Eccles, J.V, Makela, J.J, Kelley, M.C, Gonzalez, S.A, Aponte, N., Bullett, T.W, (2003). Ionospheric data assimilation: recovery of strong mid-latitude density gradients . J. Atmos. Solar-Terr. Phys., 65, 1087-1097.
• Schunk, R., Scherliess, L., Sojka, J.J, (2003). Recent approaches to modeling ionospheric weather . Adv. Space Res., 31, 819-828.
• Sojka, J.J, David, M., Schunk, R., (2002). A mid-latitude space weather hazard driven directly by the magnetosphere . J. Atmos. Solar-Terr. Phys., 64, 687-695.
• David, M., Sojka, J.J, Schunk, R., Heelis, R., (2002). Relative solar and auroral contribution to the polar F-region: Implications for National Space Weather Program . J. Geophys. Res., 107, 1310. doi: 10.1029/2001JA009167
• Sojka, J.J, Schunk, R., David, M., Innis, J.L, Greet, P.A, Dyson, P.L, (2001). A theoretical model study of F-region response to high latitude neutral wind upwelling events . J. Atmos. Solar-Terr. Phys., 63, 1571-1584.
• Sojka, J.J, Thompson, D.C, Schunk, R., Bullett, T.W, Makela, J.J, (2001). Assimilation Ionosphere Model: Development and testing with combined ionospheric campaign Caribbean measurements . Radio Sci., 36, 247-259.
• Makela, J.J, Kelley, M.C, Sojka, J.J, Pi, X., Mannucci, A.J, (2001). GPS normalization and preliminary modeling results of total electron content during a midlatitude space weather event. Radio Sci., 36, 351-361.
• Thiemann, H., Sojka, J.J, Eccles, J.V, Rao, P.B, Rama Rao, P.V, Sirdharan, R., Lakhina, G.S, (2001). Indo-German low-latitude project DEOS: Plasma bubbles in the post sunset and nighttime sector. Adv. Space Res., 27, 1065-1069.
• Schunk, R., Sojka, J.J, (2001). Ionospheric climatology and weather disturbances: A tutorial. Geophysical Monograph, 125, 359-368.
• Schunk, R., Scherliess, L., Sojka, J.J, (2001). Ionospheric specification and forecast modeling . AIAA-2001-0236, 1-17.
• Davies, R., JR Dennison, , Sojka, J.J, (1993). Experimental Determination of Backscattered and Secondary Electron Coefficients with Application to Spacecraft Charging Models. Bulletin of the American …

Professional Journal

• David, M., Sojka, J.J, Schunk, R., Coster, A.J, (2016). Polar cap patches and the tongue of ionization: A survey of GPS TEC maps from 2009 to 2015. Geophysical Research Letters, 43, 2422-2428. doi: doi:10/1002/2016GL068136
• Rice, D.D, Sojka, J.J, (2015). Historical comparisons of IRI and early ionograms. Advances in Space Research, 55, 2003-2011. doi: dx.doi.org/10.1016/j.asr.2014.05.035
• David, M., Sojka, J.J, Schunk, R., (2015). How uncertainty in the neutral wind limits the accuracy of ionospheric modeling and forecasting. Journal of Geophysical Research: Space Physics, 120, doi: doi:10.1002/2015JA021544
• Schunk, R., Scherliess, L., Eccles, V., Gardner, L.C, Sojka, J.J, Zhu, L., Pi, X., Mannucci, A., Wilson, B., Komjathy, A., Wang, C., Rosen, G., (2014). Ensemble Modeling with Data Assimilation Models: A New Strategy for Space Weather Specifications, Forecasts, and Science. Space Weather Journal, 12, 123-126. doi: doi:10.1002/2014SW001050214
• Sojka, J.J, Schunk, R., Nicolls, M.J, (2014). Ionospheric Ion Temperature Forecasting in Multiples of 27 Days. Space Weather Journal, 12:3, 148-160. doi: doi:10.1002/2013SW001012
• Sojka, J.J, Jensen, J.B, David, M., Schunk, R., Woods, T., Eparvier, F., Sulzer, M.P, Gonzalez, S.A, Eccles, J.V, (2014). Ionospheric Model-Observation Comparisons: E Layer at Arecibo Incorporation of SDO-EVE Solar Irradiances. Journal of Geophysical Rsearch - Space Physics, 119, 3844-3856. doi: doi:10.1002/2013JA019528
• David, M., Sojka, J.J, Schunk, R., (2014). Sources of uncertainty in Ionosphere Modeling: The Neutral Wind. Journal of Geophysical Research - Space Physics, 119, doi: doi:10.1002/2014JA020117
• Zhu, L., Schunk, R., Eccles, V., Scherliess, L., Sojka, J.J, Gardner, L., (2014). Terminator Field-aligned Currents: A new Finding from the Ionospheric Dynamics andElectrodynamics Data Assimilation Model. Journal of Geophysical Rsearch - Space Physics, 119:6, 4752-4757. doi: doi:10.1002/2013JA019518
• Rice, D.D, Sojka, J.J, Eccles, V., Redmon, R., Hunsucker, R.D, (2014). Characterizing the pre-space age ionosphere over Washington, DC. Radio Science, 49:8, 616-629. doi: doi:10.1002/2014RS005427
• Sojka, J.J, Rice, D.D, (2014). In memoriam: Robert D. Hunsucker, 1930-2014. Space Weather, 12:3, 127-128. doi: 10.1002/2014SW001038
• Sojka, J.J, (2013). Ionospheric Induced Scintillation: A Space Weather Enigma. Space Weather Journal, 11, 1-4. doi: doi:10.1002/swe.20041
• Sojka, J.J, Jensen, J., David, M., Schunk, R., Woods, T., Eparvier, F., (2013). Modeling the Ionospheric E and F1 Regions: Using SDO-EVE Observations as the Solar Irradiance Driver. Journal of Geophysical Rsearch - Space Physics, 118, 5379-5391. doi: doi:10.1002/jgra.50480
• Yuan, T., Fish, C., Sojka, J.J, Rice, D., Taylor, M.J, Mitchell, N.J, (2013). Coordinated investigation of summer time mid-latitude descending E layer (Es) perturbations using Na lidar, ionosonde and meteor wind radar observations over Logan, UT (41.7°N, 11.8°W). Journal of Geophysical Research, 118, 1734-1746. doi: 10.1029/2012JD017845
• Sojka, J.J, David, M., Schunk, R., Heelis, R.A, (2012). A Modeling Study of the Longitudinal Dependence of Storm-time Mid-latitude Dayside TEC Enhancements. Journal of Geophysical Research, 117, A02315. doi: doi:10.1029/2011JA017000
• Shim, J., Kuznetsova, M., Rastatter, L., Bilitza, D., Butala, M., Codrescu, M., Emery, B.A, Foster, B., Fuller-Rowell, T.J, Huba, J., Mannucci, A.J, Pi, X., Ridley, A., Scherliess, L., Schunk, R., Sojka, J.J, Stephens, P., Thompson, D.C, Weimer, D., Zhu, L., Sutton, E., (2012). CEDAR Electrodynamics Thermosphere Ionosphere (ETI) Challenge for Systematic Assessment of Ionosphere/Thermosphere Models 2: Electron Density, Neutral Density, NmF2 and hmF2 Using Space Based Observations. Space Weather Journal, 10, S10004. doi: dx.doi.org/10.1029/2012SW000851
• Gardner, L., Sojka, J.J, Heelis, R., Schunk, R., (2012). Changes in Thermospheric Temperature Induced by High-Speed Solar Wind Streams. Journal of Geophysical Research, 117:A12, A12304. doi: doi:org/10.1029/2012JA017929
• Gromenko, O., Kokoszka, P.S, Zhu, L., Sojka, J.J, (2012). Estimation and Testing for Spatially Indexed Curves with Application to Ionospheric and Magnetic Field Trends. Annals of Applied Statistics, 6:2, 669-696.
• Andriyas, T., Spencer, E., Raj, A., Sojka, J.J, Mays, L., (2012). Forecasting the Dst Index During CIR Events Using Synthesized Solar Wind Parameters. Journal of Geophysical Research, 117, A03204. doi: doi:10.1029/2011JA017018
• Rice, D., Sojka, J.J, Eccles, J.V, Schunk, R., (2012). Typoon Melor and Ionospheric Weather in the Asian Sector: A Case Study. Radio Science, 47, RS0L05. doi: doi:10.1029/2011RS004917
• Sojka, J.J, Nicolls, M., van Eyken, T., Heinselman, C., Bilitza, D., (2011). 24/7 Solar Minimum Polar Cap and Auroral Ion Temperature Observations. Adv. Space Res., 48, 1-11. doi: 10.1016/j.asr.2011.03.005
• Acebal, A.O, Sojka, J.J, (2011). A Flare sensitive 3 h solar flux radio index for space weather applications. Space Weather, 9, doi: 10.1029/2910SW00585
• Shim, J.S, Kuznetosova, M., Rastatter, I., Hesse, M., Bilitza, D., Butala, M., Codrescu, M., Emery, B., Foster, B., Fuller-Rowell, T., Huba, J., Mannucci, A.J, Pi, X., Ridley, A., Scherliess, L., Schunk, R., Stephens, P., Thompson, D.C, Zhu, L., Anderson, D., Chau, J.L, Sojka, J.J, Rideout, B., (2011). CEDAR Electrodynamics Thermosphere Ionosphere (ETI) Challenge for Systematic Assessment of Ionosphere/Thermosphere Models: NmF2, hmF2, and Vertical Drift Using Ground-based Observations. Space Weather, 9, S12003. doi: doi:10.1029/2011SW000727
• Rice, D.D, Sojka, J.J, Eccles, J.V, Raitt, J.W, Brady, J.J, Hunsucker, R.D, (2011). First Results of Mapping Sporadic E with a Passive Observing Network. Space Weather, 9:12, S12001. doi: dx.doi.org/10.1029/2011SW000678
• Eccles, V., Rice, D.D, Sojka, J.J, Valladares, C.E, Bullett, T., Chau, J.L, (2011). Lunar atmospheric tidal effects in the plasma drifts observed by the low-latitude ionospheric sensor network. J. Geophys. Res.116, doi: 10.1029/2010JA016282
• Heelis, R.A, Sojka, J.J, (2011). Response of the topside ionosphere to high-speed wind streams. Journal of Geophysical Research, 116, A11314. doi: doi:10.1029/2011JA016739
• David, M., Sojka, J.J, Schunk, R., (2011). The Effect of Downward Electron Heat Flow and Electron Cooling Processes in the High-latitude Ionosphere. Journal of Atmospheric and Solar-Terrestrial Physics, 73, 2399-2409.
• Woods, T.N, Eparvier, F.G, Hock, R., Jones, A.R, Woodraska, D., Judge, D., Didkovsky, L., Lean, J., Mariska, J., Warren, H., McMullin, D., Chamberlin, P., Berthiaume, G., Bailey, S., Fuller-Rowell, T., Sojka, J.J, Tobiska, W.K, Viereck, R., (2010). Extreme Ultraviolet Variability Experiment (EVE) on the Solar Dyamics Observatory (SDO): Overview of Sicence Objectives, Instrument Design, Data Products, and Model Developments. Solar Physics, 275:1-2, 115-143. doi: doi:10.1007/s11207-009-9487-6
• Sojka, J.J, Eccles, J.V, Schunk, R., McDonald, S., Thonnard, S., Dymond, K., McCoy, R.P, (2004). Ionospheric Assimilation Techniques for ARGOS Low-Resolution Airglow and Aurora Spectrograph (LORAAS) Tomographically Reconstructed Equatorial Electron Density Profiles. Radio Science, 39, RS1S07. doi: doi: 10.1029/2002RS002811
• Zhu, L., Schunk, R., Sojka, J.J, David, M., (2000). Model Study of Ionospheric Dynamics During a Substorm. Journal of Geophysical Research, 105, 15807-15822.
• Sojka, J.J, Zhu, L., David, M., Schunk, R., (2000). Modeling the Evolution of Meso-scale Ionospheric Irregularities at High Latitudes. Geophysical Research Letters, 27, 3595-3598.

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Other

Bulletins

• Sojka, J.J, Baker, D.N, (2007). No small feat (NSF): Student-led spacecraft. Space News

Magazine/Trade Publications

• Sojka, J.J, Schunk, R., van Eyken, T., Kelly, J., Heinselman, C., McCready, M., (2007). Ionospheric challenges of the International Polar Year . EOS News, American Geophysical Union

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.