Ludger Scherliess

Publications | Book Chapters

• Scherliess, L., (2016). Ionospheric response to X-ray and EUV flux changes during solar flares: A review. AGU Monograph "Ionospheric Space Weather"
• 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,
• Shim, J., Kuznetsova, M., Rastätter, L., Bilitza, D., Butala, M., Codrescu, M., Emery, B., Foster, B., Fuller-Rowell, T., Huba, J., Mannucci, A., Pi, X., Ridley, A., Scherliess, L., other, , (2014). Systematic Evaluation of Ionosphere/Thermosphere (IT) Models. Modeling the Ionosphere-Thermosphere System, (eds J. Huba, R. Schunk and G. Khazanov), John Wiley & Sons, Ltd,
• Scherliess, L., Ionospheric response to X-ray and EUV flux changes 1 during solar flares: A review. AGU Monograph
• Scherliess, L., Thompson, D.C, Schunk, R., (2011). Data assimilation models: A ‘new’ tool for ionosphere science and applications : The Dynamic Magnetosphere. Springer
• Schunk, R., Scherliess, L., Thompson, D.C, (2011). Ionosphere data assimilation: Problems associated with missing physics : Aeronomy of the Earth's Atmosphere and Ionosphere. Springer Link
• 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

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Journal Articles

Academic Journal

• Lomidze, L., Scherliess, L., Schunk, R., (2016). Modeling and analysis of ionospheric evening anomalies with a physics-based data assimilation model. Journal of Atmospheric and Solar-Terrestrial Physics, 140, 65–78. doi: doi:10.1016/j.jastp.2016.02.009
• Lomidze, L., Scherliess, L., (2015). Estimation of thermospheric zonal and meridional winds using a Kalman filter technique. Space Weather, 13:11, 747–760.
• Lomidze, L., Scherliess, L., Schunk, R., (2015). Magnetic meridional winds in the thermosphere obtained from Global Assimilation of Ionospheric Measurements (GAIM) model. Journal of Geophysical Research: Space Physics, 120:9, 8025–8044.
• Balthazor, R.L, McHarg, M.G, Enloe, C.L, Mueller, B., Barnhart, D.J, Hoeffner, Z.W, Brown, R., Scherliess, L., Wilhelm, L.T, (2015). Methodology of evaluating the science benefit of various satellite/sensor constellation orbital parameters to an assimilative data forecast model. Radio Science
• 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.
• Sojka, J.J, Schunk, R., Thompson, D., Scherliess, L., David, M., (2013). Ionospheric Weather at Mid-Latitudes. Midlatitude Ionospheric Dynamics and Disturbances, 181, 35.
• Scherliess, L., Thompson, D., Schunk, R., (2010). Ionospheric dynamics and drivers obtained from a physics-based data assimilation model (DOI 10.1029/2008RS004068). Radio Science, 45:1
• Shim, J.S, Scherliess, L., Schunk, R., Thompson, D.C, (2010). Neutral wind and plasma drift effects on low- and mid-latitude Total Electron Content . Journal of Geophysical Research, 115:A4
• Anderson, D., Araujo-Pradere, E., Scherliess, L., (2009). Comparing daytime, equatorial ExB drift velocities and TOPEX/TEC observations associated with the 4-cell, non-migrating tidal structure. Annales Geophysicae, 27, 2861-2867.
• Scherliess, L., Thompson, D.C, Schunk, R., (2009). Ionospheric dynamics and drivers obtained from a physics-based data assimilation model . Radio Science, 44, doi: 10.1029/ 2008RS004068
• 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
• 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.
• Shim, J.S, Scherliess, L., Schunk, R.W, Thompson, D.C, (2008). Correlation of Day-to-Day Ionospheric Total Electron Content Variability Obtained from Ground-Based GPS. Journal of Geophysical Research, 113, A01311. doi: 10.1029/2007JA012480
• 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
• Scherliess, L., Thompson, D.C, Schunk, R., (2008). Longitudinal variability of low-latitude Total Electron Content: Tidal influences . J. Geophys. Res., 113, doi: 10.1029/ 2007JA012480
• Shim, J.S, Scherliess, L., Schunk, R., Thompson, D.C, (2008). Spatial correlations of day-to-day ionospheric Total Electron Content variability obtained from ground-based GPS . J. Geophys. Res., 113, doi: 10.1029/2007JA012635
• 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
• Bekerat, H.A, Schunk, R., Scherliess, L., (2007). Estimation of the high-latitude topside electron heat flux using DMSP plasma density measurements. J. Atmos. Solar-Terr. Phys., 69, 1029-1048.
• 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
• Jee, G., Schunk, R., Scherliess, L., (2005). Comparison of IRI-2001 with TOPEX TEC measurements . J. Atmos. Solar-Terr. Phys., 67, 365-380.
• Barkerat, H., Schunk, R., Scherliess, L., (2005). Comparison of satellite ion drift velocities with AMIE deduced convection patterns . J. Atmos. Solar-Terr. Phys., 67, 1463-1479.
• 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
• Jee, G., Schunk, R., Scherliess, L., (2005). On the sensitivity of Total Electron Content (TEC) to upper atmospheric/ionospheric parameters. J. Atmos. Solar-Terr. Phys., 67, 1040-1052.
• 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
• Jee, G., Schunk, R., Scherliess, L., (2004). The analysis of TEC data from TOPEX/Poseidon mission . J. Geophys. Res., 109, doi: 10.1029/2003JA010058
• Bakerat, H.A, Schunk, R., Scherliess, L., (2003). Evaluation of statistical convection patterns for real-time specifications and forecasts . J. Geophys. Res., 108:A12, 1413. doi: 10.1029/ 2003JA009945
• Schunk, R., Scherliess, L., Sojka, J.J, (2003). Recent approaches to modeling ionospheric weather . Adv. Space Res., 31, 819-828.
• Polglase, R., Ujmaia, S., Scherliess, L., Parkinson, M.L, Fejer, B.G, Dyson, P.L, others, , (2001). Electric field measurements at a southern mid-latitude station obtained using an HF digital ionosonde. Kidlington, UK: Pergamon-Esevier Science Ltd,
• Parkinson, M., Ujmaia, S., Dyson, P., Fejer, B.G, Scherliess, L., (2001). Electric field measurements at a southern mid-latitude station obtained using an HF digital ionosonde. Advances in Space Research, 27, 1253.
• Schunk, R., Scherliess, L., Sojka, J.J, (2001). Ionospheric specification and forecast modeling . AIAA-2001-0236, 1-17.
• Fejer, B.G, Scherliess, L., (2001). On the variability of equatorial F-region vertical plasma drifts. Journal of Atmospheric and Solar-Terrestrial Physics, 63:9, 893–897.
• Scherliess, L., Fejer, B.G, Holt, J.M, Goncharenko, L., Armonry-Mazaudier, C., Buonsanto, M.J, (2001). Radar studies of mid-latitude ionospheric plasma drifts. J. Geophys. Res., 106, 1771.
• Parkinson, M.L, Polglase, R., Fejer, B.G, Scherliess, L., Dyson, P., Ujmaia, S., (2001). Seasonal and magnetic activity variations of ionospheric electric fields above the southernmid-latitude station, Bundoora, Australia. Annales Geophysicae, 19, 521–532.
• Fejer, B.G, Scherliess, L., Paula, E.d, (1999). Effects of the vertical plasma drift velocity on the generation and evolution of equatorial spread F. Journal of Geophysical Research: Space Physics (1978–2012), 104:A9, 19859–19869.
• Scherliess, L., Fejer, B.G, (1999). Radar and satellite global equatorial F region vertical drift model. Journal of Geophysical Research: Space Physics (1978–2012), 104:A4, 6829–6842.
• Fejer, B.G, Scherliess, L., (1998). Mid-and low-latitude prompt-penetration ionospheric zonal plasma drifts. Geophysical research letters, 25:16, 3071–3074.
• Scherliess, L., Fejer, B.G, (1998). Satellite studies of mid-and low-latitude ionospheric disturbance zonal plasma drifts. Geophysical research letters, 25:9, 1503–1506.
• Fejer, B.G, Scherliess, L., (1997). Empirical models of storm time equatorial zonal electric fields. Journal of Geophysical Research: Space Physics (1978–2012), 102:A11, 24047–24056.
• Zuzic, M., Scherliess, L., Prölss, G., (1997). Latitudinal structure of thermospheric composition perturbations. Journal of Atmospheric and Solar-Terrestrial Physics, 59:6, 711–724.
• Fejer, B.G, de Paula, E., Scherliess, L., (1997). Low altitude ionospheric plasma drift models. Advances in Space Research, 20:9, 1790.
• Scherliess, L., Fejer, B.G, (1997). Storm-time dependence of equatorial disturbance dynamo zonalelectric fields. Journal of Geophysical Research, 102:A11, 24037–24046.
• Fejer, B.G, de Paula, E.R, Scherliess, L., Batista, I.S, (1996). Incoherent scatter radar, ionosonde, and satellite measurements of equatorial F region vertical plasma drifts in the evening sector. Geophysical research letters, 23:14, 1733–1736.
• Fejer, B.G, Scherliess, L., (1995). Time dependent response of equatorial ionospheric electric fieldsto magnetospheric disturbances. Geophysical Research Letters, 22:7, 851–854.

Professional Journal

• 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
• 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
• 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
• Zhu, L., Schunk, R., Scherliess, L., Eccles, J.V, (2012). Importance of data assimilation technique in defining the model drivers for the space weather specification of the high-latitude ionosphere. Radio Science, 47, RS0L24. doi: doi:10.1029/2001RS004936
• Schunk, R., Gardner, L.C, Scherliess, L., Zhu, L., (2012). Problems associated with uncertain parameters and missing physics for long-term ionosphere-thermosphere forecasting. Radio Science, 47, RS0L23. doi: doi:10.1029/2011RS004911
• 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

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

Publications | Technical Reports

Other Reports

• Scherliess, L., (2015). GAIMFP: Users Guide. GAIM-FP V2.0 Delivery
• Scherliess, L., Schunk, R., Thompson, D., Zhu, L., (2011). Assimilation of Ionospheric Measurements–Full Physics (GAIM-FP). Guide to Reference and Standard Ionosphere Models, American Institute for Aeronautics and Astronautics *
• Schunk, R., Scherliess, L., Thompson, D., Zhu, L., (2011). Global Assimilation of Ionospheric Measurements–Gauss-Markov (GAIM-GM). Guide to Reference and Standard Ionosphere Models, American Institute for Aeronautics and Astronautics *
• Schunk, R., Scherliess, L., Thompson, D., Zhu, L., (2011). Ionosphere- Plasmasphere Model (IPM). Guide to Reference and Standard Ionosphere Models, American Institute for Aeronautics and Astronautics *

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

Publications | Other

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