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MLTDM: Machine-learning thermospheric density model

Published:

A random-forest model of storm-time atmospheric neutral density, published in Space Weather (2025) and released as an open, installable Python package with a worked example notebook.

JB2008 in Python, ~11x faster

Published:

Vectorized and parallelized the Python port of the JB2008 empirical density model, cutting ~70,000 predictions from ~8 minutes to ~40 seconds.

Magnetosphere Online Seminar Series

Published:

An international online seminar series that kept the space physics community connected when conferences were cancelled during COVID-19.

publications

Near-Earth initiation of a terrestrial substorm

Published in Journal of Geophysical Research: Space Physics, 2009

Recommended citation: Rae, I. J., Mann, I. R., Angelopoulos, V., Murphy, K. R., Milling, D. K., Kale, A., et al. (2009). Near-Earth initiation of a terrestrial substorm. Journal of Geophysical Research: Space Physics, 114(7), 1-9.
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Ultralow-frequency modulation of whistler-mode wave growth

Published in Journal of Geophysical Research: Space Physics, 2011

Recommended citation: Watt, C. E. J., Degeling, a. W., Rankin, R., Murphy, K. R., Rae, I. J., & Singer, H. J. (2011). Ultralow-frequency modulation of whistler-mode wave growth. Journal of Geophysical Research: Space Physics, 116(10), 1-13.
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The Role of Ultralow Frequency Waves in Radiation Belt Dynamics

Published in Dynamics of the Earth's Radiation Belts and Inner Magnetosphere, 2012

Recommended citation: Mann, I. R., Murphy, K. R., Ozeke, L. G., Rae, I. J., Milling, D. K., Kale, A. A., & Honary, F. F. (2013). The Role of Ultralow Frequency Waves in Radiation Belt Dynamics. In Geophysical Monograph Series (Vol. 199, pp. 69-92).
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ULF wave derived radiation belt radial diffusion coefficients

Published in Journal of Geophysical Research: Space Physics, 2012

Recommended citation: Ozeke, L. G., Mann, I. R., Murphy, K. R., Rae, I. J., Milling, D. K., Elkington, S. R., et al. (2012). ULF wave derived radiation belt radial diffusion coefficients. Journal of Geophysical Research: Space Physics, 117(4), 1-16.
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Ground-based magnetometer determination of in situ Pc4-5 ULF electric field wave spectra as a function of solar wind speed

Published in Journal of Geophysical Research: Space Physics, 2012

Recommended citation: Rae, I. J., Mann, I. R., Murphy, K. R., Ozeke, L. G., Milling, D. K., Chan, A. A., et al. (2012). Ground-based magnetometer determination of in situ Pc4-5 ULF electric field wave spectra as a function of solar wind speed. Journal of Geophysical Research: Space Physics, 117(4), 1-17.
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Inner magnetospheric onset preceding reconnection and tail dynamics during substorms: Can substorms initiate in two different regions?

Published in Journal of Geophysical Research: Space Physics, 2014

Recommended citation: Murphy, K. R., Mann, I. R., Rae, I. J., Walsh, A. P., & Frey, H. U. (2014). Inner magnetospheric onset preceding reconnection and tail dynamics during substorms: Can substorms initiate in two different regions? Journal of Geophysical Research: Space Physics, 119(12), 9684-9701.
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The CASSIOPE/e-POP Magnetic Field Instrument (MGF)

Published in Space Science Reviews, 2015

Recommended citation: Miles, D. M., Mann, I. R., Ciurzynski, M., Barona, D., Narod, B. B., Bennest, J. R., et al. (2016). A miniature, low-power scientific fluxgate magnetometer: A stepping-stone to cube-satellite constellation missions. Journal of Geophysical Research: Space Physics, 121(12), 11,839-11,860.
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Accurately characterizing the importance of wave-particle interactions in radiation belt dynamics: The pitfalls of statistical wave representations

Published in Journal of Geophysical Research: Space Physics, 2016

Recommended citation: Murphy, K. R., Mann, I. R., Rae, I. J., Sibeck, D. G., & Watt, C. E. J. (2016). Accurately characterizing the importance of wave-particle interactions in radiation belt dynamics: The pitfalls of statistical wave representations. Journal of Geophysical Research: Space Physics, 121(8), 7895-7899.
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Diagnosing the Role of Alfven Waves in Magnetosphere-Ionosphere Coupling: Swarm Observations of Large Amplitude Nonstationary Magnetic Perturbations During an Interval of Northward IMF

Published in Journal of Geophysical Research: Space Physics, 2018

Recommended citation: Pakhotin, I. P., Mann, I. R., Lysak, R. L., Knudsen, D. J., Gjerloev, J. W., Rae, I. J., et al. (2018). Diagnosing the Role of Alfvén Waves in Magnetosphere-Ionosphere Coupling: Swarm Observations of Large Amplitude Nonstationary Magnetic Perturbations During an Interval of Northward IMF. Journal of Geophysical Research: Space Physics, 123(1).
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Magnetosphere-Ionosphere Coupling and Ionospheric Dynamics during Storms and Substorms: Role of Alfven Waves

Published in  Geomagnetism, aeronomy and space weather , 2019

Recommended citation: Mann, I. R. , Pakhotin, I. P. , Rae, I. J. , Murphy, K. R. , Ozeke, L. G., Knudsen, D. J., Kale, A., and Milling, D. K. (2019). Magnetosphere-Ionosphere Coupling and Ionospheric Dynamics during Storms and Substorms: Role of Alfven Waves in Mandea, M., Korte, M., Yau, A., & Petrovsky, E. (Eds.), pages 229-250. Geomagnetism, aeronomy and space weather : A journey from the earth's core to the sun.
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Ultra-Low-Frequency Wave-Particle Interactions

Published in  Geomagnetism, aeronomy and space weather , 2019

Recommended citation: Mann, I. R., Ozeke, L. G., Degeling, A., Murphy, K. R., and Rankin, R. (2019). Ultra-Low-Frequency Wave-Particle Interactions in Mandea, M., Korte, M., Yau, A., & Petrovsky, E. (Eds.), pages 190-194. Geomagnetism, aeronomy and space weather : A journey from the earth's core to the sun.
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Rapid Outer Radiation Belt Flux Dropouts and Fast Acceleration During the March 2015 and 2013 Storms: The Role of Ultra-Low Frequency Wave Transport From a Dynamic Outer Boundary

Published in Journal of Geophysical Research: Space Physics, 2020

Recommended citation: Ozeke, L. G., Mann, I. R., Olifer, L., Dufresne, K. Y., Morley, S. K., Claudepierre, S. G., et al. (2020). Rapid Outer Radiation Belt Flux Dropouts and Fast Acceleration During the March 2015 and 2013 Storms: The Role of Ultra-Low Frequency Wave Transport From a Dynamic Outer Boundary. Journal of Geophysical Research: Space Physics, 125(2).
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Driving of Outer Belt Electron Loss by Solar Wind Dynamic Pressure Structures: Analysis of Balloon and Satellite Data

Published in Journal of Geophysical Research: Space Physics, 2020

Recommended citation: Breneman, A. W., Halford, A. J., Millan, R. M., Woodger, L. A., Zhang, X.-J., Sandhu, J. K., et al. (2020). Driving of outer belt electron loss by solar wind dynamic pressure structures: Analysis of balloon and satellite data. Journal of Geophysical Research: Space Physics, 125, e2020JA028097.
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Imaging the magnetosphere-ionosphere system with ground-based and in-situ magnetometers

Published in Magnetospheric Imaging, 2022

Recommended citation: Murphy, K. R., Bentley, S. N., Miles, D., Sandhu, J. K., & Smith, A. (2022). Imaging the magnetosphere-ionosphere system with ground-based and in-situ magnetometers. In Y. Collado-Vega, D. Gallagher, H. Frey, & S. Wing (Eds.), Magnetospheric Imaging: Understanding the Space Environment through Global Measurements (pp. 287-340). Elsevier. https://doi.org/10.1016/B978-0-12-820630-0.00002-7
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Statistical Comparison of Electron Loss and Enhancement in the Outer Radiation Belt During Storms

Published in Journal of Geophysical Research: Space Physics, 2022

Recommended citation: Walton, S. D., Forsyth, C., Rae, I. J., Meredith, N. P., Sandhu, J. K., Walach, M.-T., & Murphy, K. R. (2022). Statistical comparison of electron loss and enhancement in the outer radiation belt during storms. Journal of Geophysical Research: Space Physics, 127, e2021JA030069. https://doi.org/10.1029/2021JA030069
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Statistical Characterization of the Dynamic Near-Earth Plasma Sheet Relative to Ultra-Low Frequency (ULF) Wave Growth at Substorm Onset

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Smith, A. W., Rae, I. J., Forsyth, C., Watt, C. E. J., & Murphy, K. R. (2023). Statistical characterization of the dynamic near-Earth plasma sheet relative to Ultra-Low Frequency (ULF) wave growth at substorm onset. Journal of Geophysical Research: Space Physics, 128, e2022JA030491. https://doi.org/10.1029/2022JA030491
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Understanding quiet and storm time EMIC waves – Van Allen Probes Results

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Remya, B., Halford, A. J., Sibeck, D. G., Murphy, K. R., & Fok, M.-C. (2023). Understanding quiet and storm time EMIC waves—Van Allen Probes results. Journal of Geophysical Research: Space Physics, 128, e2023JA031712. https://doi.org/10.1029/2023JA031712
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The Response of Electron Pitch Angle Distributions to the Upper Limit on Stably Trapped Particles

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Walton, S. D., Mann, I. R., Olifer, L., Ozeke, L. G., Forsyth, C., Rae, I. J., et al. (2023). The response of electron pitch angle distributions to the upper limit on stably trapped particles. Journal of Geophysical Research: Space Physics, 128, e2023JA031988. https://doi.org/10.1029/2023JA031988
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Extreme Birkeland Currents Are More Likely During Geomagnetic Storms on the Dayside of the Earth

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Coxon, J. C., Chisham, G., Freeman, M. P., Forsyth, C., Walach, M.-T., Murphy, K. R., et al. (2023). Extreme Birkeland currents are more likely during geomagnetic storms on the dayside of the Earth. Journal of Geophysical Research: Space Physics, 128, e2023JA031946. https://doi.org/10.1029/2023JA031946
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Persistent pitch angle anisotropies of relativistic electrons in the outer radiation belts

Published in Journal of Geophysical Research: Space Physics, 2023

Recommended citation: Greeley, A. D., Kanekal, S. G., Schiller, Q., Blum, L., Halford, A., Murphy, K., et al. (2024). Persistent pitch angle anisotropies of relativistic electrons in the outer radiation belts. Journal of Geophysical Research: Space Physics, 129, e2023JA031549. https://doi.org/10.1029/2023JA031549
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A survey of EMIC waves in Van Allen Probe data

Published in Journal of Geophysical Research: Space Physics, 2024

Recommended citation: Inglis, A. R., Murphy, K. R., & Halford, A. (2024). A Survey of EMIC waves in Van Allen Probe data. Journal of Geophysical Research: Space Physics, 129, e2024JA032666. https://doi.org/10.1029/2024JA032666
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Derivations of the Total Radiation Belt Electron Content

Published in Journal of Geophysical Research: Space Physics, 2024

Recommended citation: Pitzel, J. C., Cully, C. M., Ripoll, J.-F., Loridan, V., Huang, C.-L., Spence, H. E., et al. (2024). Derivations of the total radiation belt electron content. Journal of Geophysical Research: Space Physics, 129, e2024JA032940. https://doi.org/10.1029/2024JA032940
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Diamond Experiment In the MagnetOSphere (DEIMOS): a Collisionless Shocks and Solar Wind Mission Concept for the Lunar Gateway

Published in Journal of Geophysical Research: Space Physics, 2024

Recommended citation: Shonibare, T., Murphy, K. R., & Pakhotin, I. P. (2024). Diamond experiment in the magnetosphere (DEIMOS): A collisionless shocks and solar wind mission concept for the Lunar Gateway. Journal of Geophysical Research: Space Physics, 129, e2024JA032728. https://doi.org/10.1029/2024JA032728
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