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2016

Drozdov A. Y., Y. Y. Shprits, K. G. Orlova, A. C. Kellerman, D. A. Subbotin, D. N. Baker, H. E. Spence, G. D. Reeves, (2016), Energetic, relativistic, and ultrarelativistic electrons: Comparison of long-term VERB code simulations with Van Allen Probes measurements, EGU General Assembly 2016, Vienna, Austria, 17-22 April, 2016

2015

Drozdov A., Y. Shprits, K. Orlova, A. C. Kellerman, D. Subbotin, D. N. Baker, H. E. Spence, G. D. Reeves, (2015), Long-term VERB Code Simulations of Ultra-relativistic Electrons and Comparison with Van Allen Probes Measurements, AGU Fall Meeting 2015, San Francisco, CA, 14-18 December

Kellerman A. C., Y. Shprits, D. A. Kondrashov, T. Podladchikova, A. Drozdov, D. Subbotin, R. A. Makarevich, E. Donovan, T. Nagai, (2015), Three-dimensional data assimilation and reanalysis of radiation belt electrons: Observations over two solar cycles, AGU Fall Meeting 2015, San Francisco, CA, 14-18 December

Kellerman A. C., Y. Shprits, D. A. Kondrashov, T. Podladchikova, A. Drozdov, D. Subbotin, R. A. Makarevich, E. Donovan, T. Nagai, (2015), Three-dimensional data assimilation and reanalysis of radiation belt electrons: Observations over two solar cycles, and operational forecasting., AGU Joint Assembly 2015, SM52A-05

2014

Drozdov A. Y., Y. Y. Shprits, A. C. Kellerman, D. Subbotin, D. N. Baker, L. Ozeke, I. Mann, (2014), Response of radiation belt simulations to different radial diffusion coefficients for relativistic and ultra-relativistic electrons, 40th Cospar Scientific Assembly, Moscow, Russia, 2-10 August.

Drozdov A., K. G. Orlova, D. Subbotin, H. Spence, (2014), Energetic relativistic and ultra-relativistic electrons: comparison of long-term VERB code simulations with Van Allen Probes measurements, (poster), AGU Fall Meeting 2014, San Francisco, 14-18 December

Kellerman A. C., Y. Y. Shprits, D. Kondrashov, D. Subbotin, R. A. Makarevich, E. Donovan, T. Nagai, (2014), Three-dimensional data assimilation and reanalysis of radiation belt electrons: Observations of a four-zone structure using five spacecraft and the VERB code, J. of Geophys. Res. [Space Physics], 119, 8764-8783, doi:10.1002/2014JA020171

Kellerman A. C., Y. Y. Shprits, D. Kondrashov, D. Subbotin, T. Podladchikova, A. Y. Drozdov, (2014), 3D reanalysis: a global measure of radiation belt state, GEM Summer Workshop 2014, Portsmouth, VA, June 15-20.

Pakhotin I. P., A. Y. Drozdov, Y. Y. Shprits, R. J. Boynton, D. A. Subbotin, M. A. Balikhin, (2014), Simulation of high-energy radiation belt electron fluxes using NARMAX-VERB coupled codes, J. of Geophys. Res. [Space Physics], 119, 8073-8086, doi:10.1002/2014JA020238

Shprits Y. Y., A. Y. Drozdov, D. Subbotin, A. C. Kellerman, K. G. Orlova, D. Baker, M. Usanova, (2014), Ultra-relativistic electrons in the Van Allen radiation belts, AGU Fall Meeting 2014, San Francisco, 14-18 December

2013

Drozdov A. Y., Y. Y. Shprits, D. Subbotin, A. C. Kellerman, (2013), Response of radiation belt simulations to different radial diffusion coefficients, (poster), AGU Fall Meeting 2013, San Francisco, USA, 2013

Godinez H. C., A. C. Kellerman, D. Subbotin, Y. Y. Shprits, (2013), Implementation of Localized Ensemble Assimilation for a Three-Dimensional Radiation Belt Model, AGU Fall Meeting 2013, San Francisco, USA, 2013 AGU Abstract 100.28 presented at SPD meeting 44EGU Abstract 100.28 presented at SPD meeting 442013

Godinez H. C., Y. Y. Shprits, A. C. Kellerman, D. Subbotin, (2013), Implementation of Ensemble Data Assimilation for a Three-Dimensional Radiation Belt Model, AGU Fall Meeting 2013, AGU Abstract 100.28 presented at SPD meeting 44EGU Abstract 100.28 presented at SPD meeting 442013

Godinez H. C., Y. Y. Shprits, A. C. Kellerman, D. Subbotin, (2013), Implementation of Ensemble Data Assimilation for a Three-Dimensional Radiation Belt Model, AGU Meeting Of The Americas 2013, Cancun, Mexico, 2013

Kellerman A. C., D. A. Kondrashov, T. Podladchikova, A. Y. Drozdov, D. Subbotin, (2013), Multi-Spacecraft Data Assimilation and Reanalysis During the THEMIS and Van Allen Probes Era, GEM Summer Workshop 2013, San Francisco, USA, 2013

Kellerman A. C., D. A. Subbotin, D. Kondrashov, (2013), 3D Data assimilation during the CRRES era March storm, GEM Summer Workshop 2013, THEMIS/ARTEMIS 2013 Spring SWG Meeting, Fairbanks, Alaska, 2013.

Kellerman A. C., D. Kondrashov, D. A. Subbotin, (2013), Multi-point data assimilation using the 3D VERB code and a Kalman filter during the GEM challenge interval, GEM Summer Workshop 2013, Snowmass, CO, 2013.

Pakhotin I. P., M. A. Balikhin, Y. Y. Shprits, D. Subbotin, R. Boynton, (2013), Prediction of high-energy radiation belt electron fluxes using a combined VERB-NARMAX model, AGU Fall Meeting 2013, San Francisco, USA, 2013

Shprits Y. Y., D. Subbotin, (2013), 4D simulations of the dynamic evolution of the radiation belts simultaneously accounting for convective and diffusive processes, AGU Meeting Of The Americas 2013, Cancun, Mexico, 2013

Shprits Y. Y., D. Subbotin, A. Drozdov, M. E. Usanova, A. Kellerman, K. Orlova, D. N. Baker, D. L. Turner, K. Kim, (2013), Unusual stable trapping of the ultrarelativistic electrons in the Van Allen radiation belts, Nature Physics, 9, 699–703, doi:10.1038/nphys2760

Shprits Y., A. Kellerman, D. Kondrashov, D. Subbotin, (2013), Application of a new data operator-splitting data assimilation technique to the 3-D VERB diffusion code and CRRES measurements, Geophysical Research Letters, 40, 4998-5002, doi:10.1002/grl.50969

Shprits Y. Y., A. C. Kellerman, D. Subbotin, D. A. Kondrashov, M. Daae, D. L. Turner, (2013), 3D Data assimilation in the radiation belts, AGU Fall Meeting 2013

Shprits Y. Y., D. Subbotin, A. Y. Drozdov, A. C. Kellerman, M. Usanova, K. G. Orlova, D. N. Baker, D. Turner, K. C. Kim, (2013), Unusual Stable Trapping of the Ultra-Relativistic Electrons in the Van Allen Radiation Belts, AGU Meeting Of The Americas 2013, San Francisco, USA, 2013

Subbotin D., Y. Y. Shprits, K. G. Orlova, A. C. Kellerman, (2013), Radiation Belt Simulation in the Tsyganenko Magnetic Field Including Magnetospheric Convection and Wave-Particles Interaction, AGU Meeting Of The Americas 2013, San Francisco, USA, 2013

2012

Kim K., Y. Shprits, D. Subbotin, B. Ni, (2012), Relativistic radiation belt electron responses to GEM magnetic storms: Comparison of CRRES observations with 3-D VERB simulations, J. of Geophys. Res. [Space Physics], 117, doi:10.1029/2011JA017460

Kim K. C., Y. Y. Shprits, D. Subbotin, B. Ni, (2012), Relativistic Radiation Belt Electron Responses to GEM Magnetic Storms: Comparisons of CRRES Observations with 3-D VERB simulations, GEM Summer Workshop 2012, Snowmass, Colorado, USA, 2012.

Orlova K. G., Y. Y. Shprits, D. Subbotin, M. Spasojevic, (2012), Dependence of the energy diffusion and pitch-angle scattering on spectral and spatial properties of waves, AGU 2012 Fall Meeting, San Francisco, USA, 2012

Shprits Y. Y., D. N. Baker, D. Subbotin, R. Horne, (2012), Acceleration of electrons in the inner radiation zone during solar superstorms, 39nd COSPAR Scientific Assembly, Mysore, India, 2012.

Shprits Y. Y., D. A. Kondrashov, A. C. Kellerman, D. Subbotin, (2012), 3D Data Assimilation using VERB Diffusion Code, AGU 2012 Fall Meeting, San Francisco, USA, 2012

Subbotin D. A., Y. Y. Shprits, (2012), Three-dimensional radiation belt simulations in terms of adiabatic invariants using a single numerical grid, J. of Geophys. Res. [Space Physics], 117, doi:10.1029/2011JA017467

Subbotin D., Y. Y. Shprits, (2012), Preliminary Results of 4-Dimensional Radiation Belt Simulation With the VERB Code, AGU 2012 Fall Meeting, San Francisco, USA, 2012

2011

Kim K., Y. Shprits, D. Subbotin, B. Ni, (2011), Understanding the dynamic evolution of the relativistic electron slot region including radial and pitch angle diffusion, J. of Geophys. Res. [Space Physics], 116, doi:10.1029/2011JA016684

Kim K., Y. Y. Shprits, D. Subbotin, B. Ni, (2011), Understanding the Dynamic Evolution of the Relativistic Electron Slot Region including Radial and Pitch-Angle Diffusion, AGU 2011 Fall Meeting, San Francisco, USA, 2011

Shprits Y., D. Subbotin, B. Ni, R. Horne, D. Baker, P. Cruce, (2011), Profound change of the near-Earth radiation environment caused by solar superstorms, J. Space Weather Space Clim., 9, doi:10.1029/2011SW000662

Shprits Y. Y., B. Ni, D. Subbotin, K. Kim, M. Daae, (2011), 3D VERB Code Simulations of the Dynamic Evolution of the Outer and Inner Radiation Belts, EGU General Assembly 2011, Vienna, Austria, 2011

Shprits Y. Y., D. Subbotin, B. Ni, R. B. Horne, D. N. Baker, (2011), Profound change of the near-Earth radiation environment caused by solar superstorms, AGU 2011 Fall Meeting, San Francisco, USA, 2011

Subbotin D., Y. Y. Shprits, (2011), Three-dimensional Radiation Belt Simulations in Terms of Adiabatic Invariants Using Only One Grid, AGU 2011 Fall Meeting, San Francisco, USA, 2011

Subbotin D. A., Y. Y. Shprits, M. Gkioulidou, L. R. Lyons, B. Ni, V. G. Merkin, F. R. Toffoletto, R. M. Thorne, R. B. Horne, M. K. Hudson, (2011), Simulation of the acceleration of relativistic electrons in the inner magnetosphere using RCM-VERB coupled codes, J. of Geophys. Res. [Space Physics], 116, doi:10.1029/2010JA016350

Subbotin D. A., Y. Y. Shprits, B. Ni, (2011), Long-term radiation belt simulation with the VERB 3-D code: Comparison with CRRES observations, J. of Geophys. Res. [Space Physics], 116, doi:10.1029/2011JA017019

2010

Kim K., Y. Y. Shprits, D. Subbotin, B. Ni, (2010), Understanding of the Dynamic Evolution of the Relativistic Electron Slot Region due to Radial and Pitch Angle Diffusion, AGU Fall Meeting 2010, San Francisco, CA, USA, 2010

Shprits Y. Y., D. Subbotin, B. Ni, M. Daae, D. A. Kondrashov, M. Hartinger, K. Kim, K. G. Orlova, T. Nagai, R. H. Friedel, Y. Chen, (2010), Comparison of the 3D VERB Code Simulations of the Dynamic Evolution of the Outer and Inner Radiation Belts With the Reanalysis Obtained from Observations on Multiple Spacecraft, AGU Fall Meeting 2010, San Francisco, CA, USA, 2010

Shprits Y. Y., D. Subbotin, B. Ni, D. Kondrashov, (2010), Understanding the electrons radiation belts using modeling and observations, EGU General Assembly 2010, Vienna, Austria, 2010

Shprits Y. Y., D. Subbotin, B. Ni, (2010), Simulations of the dynamics of the radiation belts using VERB 3D code, AGU Fall Meeting 2010, 91(26), Meet Am Suppl, Abstract SM33A-03, 2010

Subbotin D. A., Y. Y. Shprits, (2010), Simulation of Radiation belt dynamics with UCLA VERB code, APL, MD, USA,, January, 2010

Subbotin D., Y. Shprits, B. Ni, (2010), Three-dimensional VERB radiation belt simulations including mixed diffusion, J. of Geophys. Res. [Space Physics], 115, doi:10.1029/2009JA015070

Subbotin D., Y. Y. Shprits, M. Gkioulidou, V. Merkin, F. Toffoletto, R. Thorne, C. Wang, L. Lyons, (2010), RCM-VERB Coupled Simulations of the Dynamics of the Radiation Belts During Storms, EGU General Assembly 2010, Vienna, Austria, 2010

Subbotin D., Y. Y. Shprits, B. Ni, (2010), Long Term Radiation Belt Simulations with VERB-3D Code, AGU Fall Meeting 2010, San Francisco, CA, USA, 2010

2009

Shprits Y., B. Ni, D. Subbotin, A. Kondrashov, M. Daae, M. Thorne, T. Nagai, H. Friedel, Chen, J. Koller, D. Reeves, (2009), Dynamic evolution of the radiation belt phase space density obtained with reanalysis with simultaneous observations from four spacecraft, AGU 2009 Fall Meeting

Shprits Y. Y., D. Subbotin, B. Ni, (2009), Evolution of electron fluxes in the outer radiation belt computed with the VERB code, J. of Geophys. Res. [Space Physics], 114, doi:10.1029/2008JA013784

Shprits Y. Y., Y. Chen, R. Friedel, D. Kondrashov, B. Ni, D. Subbotin, G. Reeves, M. Ghil, (2009), UCLA-LANL Reanalysis Project, EGU General Assembly 2009, Vienna, Austria, 2009

Subbotin D. A., Y. Y. Shprits, (2009), Three-dimensional modeling of the radiation belts using the Versatile Electron Radiation Belt (VERB) code, J. Space Weather Space Clim., 7, doi:10.1029/2008SW000452

Subbotin D., Y. Y. Shprits, (2009), 3D simulations of the dynamics of the Radiation Belts including mixed diffusion, AGU 2009 Fall Meeting, 90(52), Fall Meet Suppl, Abstract SM23A-1576, 2009

2008

O`Brien T., Y. Shprits, A. Subbotin, H. Friedel, (2008), Eigen mode analysis of energy and pitch-angle diffusion of energetic electrons in the outer zone: 0.1-5 MeV, AGU Fall Meeting 2008

Shprits Y. Y., S. R. Elkington, N. P. Meredith, D. A. Subbotin, (2008), Review of modeling of losses and sources of relativistic electrons in the outer radiation belt I: Radial transport, Journal Of Atmospheric And Solar-terrestrial Physics, 70, 1679 – 1693, doi:10.1016/j.jastp.2008.06.008, Dynamic Variability of Earth’s Radiation Belts

Shprits Y. Y., D. A. Subbotin, N. P. Meredith, S. R. Elkington, (2008), Review of modeling of losses and sources of relativistic electrons in the outer radiation belt II: Local acceleration and loss, Journal Of Atmospheric And Solar-terrestrial Physics, 70, 1694 – 1713, doi:10.1016/j.jastp.2008.06.014, Dynamic Variability of Earth’s Radiation Belts

Subbotin D., Y. Y. Shprits, M. Gkioulidou, S. Merkin, F. Toffoletto, R. Thorne, C. Wang, L. Lyons, (2008), RCM-VERB coupled simulations of the dynamics of the radiation belts during storms, AGU Fall Meeting 2008, AUG, 15-19 December.