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Alex Chartier

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Staff Scientist in Ionospheric Physics
  • EngD, Aeronomy
    2014, University of Bath
  • BSc, Physics
    2009, University College London

Doctor Chartier is the principal investigator (PI) of the Super Dual Auroral Radar Network (SuperDARN) high-frequency (HF) over-the-horizon radar at NASA Wallops (VA). His research goal is to understand the dynamics of the high-latitude ionosphere and its effects on radio propagation. Related to that goal, he has addressed science topics including polar cap plasma patches, interactions between the thermosphere and ionosphere, and global ionospheric data assimilation. In 2019, he built a bistatic HF ionospheric sounder and deployed it to McMurdo and South Pole stations in Antarctica. Alex is PI of several NSF grants, and institutional PI of a NASA Living With a Star targeted research project on extreme space weather events. His thesis titled “Ionospheric Specification and Forecasting” was ranked second nationally across Geophysics by the Royal Astronomical Society (UK). Doctor Chartier also won the Committee on Space Research (COSPAR) Outstanding Paper Award for Young Scientists with his first paper. Since coming to the USA, Alex has been awarded Alien of Extraordinary Ability status.  His hobbies include sailing, rock climbing and playing drums. 

Scholarly Publications

Night-time Ionospheric Localized Enhancements (NILE) Observed in North America Following Geomagnetic Disturbances

2021

Response to reviewer RC1

2020
Alex Chartier, (2020), Response to reviewer RC1 , https://doi.org/10.5194/amt-2020-2-ac1

Response to Reviewer #2

2020
Alex Chartier, (2020), Response to Reviewer #2 , https://doi.org/10.5194/amt-2020-2-ac2

First Observations of the McMurdo-South Pole Ionospheric HF Channel

2020
Alex Timothy Chartier, Juha Vierinen, Geonhwa Jee, (2020), First Observations of the McMurdo-South Pole Ionospheric HF Channel , https://doi.org/10.5194/amt-2020-2

First observations of the McMurdo–South Pole oblique ionospheric HF channel

Atmospheric Measurement Techniques, 2020
Alex T. Chartier, Juha Vierinen, Geonhwa Jee, (2020), First observations of the McMurdotextendashSouth Pole oblique ionospheric HF channel, Atmospheric Measurement Techniques , 13, 6, 3023--3031, https://doi.org/10.5194/amt-13-3023-2020

SuperDARN Evidence for Convection‐Driven Lagrangian Coherent Structures in the Polar Ionosphere

Journal of Geophysical Research: Space Physics, 2019
U. Ramirez, Ningchao Wang, Alex T. Chartier, S. Datta‐Barua, (2019), SuperDARN Evidence for Convection-Driven Lagrangian Coherent Structures in the Polar Ionosphere, Journal of Geophysical Research: Space Physics , https://doi.org/10.1029/2018ja026225

On the Annual Asymmetry of High‐Latitude Sporadic F

Space Weather, 2019
Alex T. Chartier, J. D. Huba, Cathryn N. Mitchell, (2019), On the Annual Asymmetry of High-Latitude Sporadic F, Space Weather , 17, 11, 1618--1626, https://doi.org/10.1029/2019sw002305

Annual Occurrence Rates of Ionospheric Polar Cap Patches Observed Using Swarm

Journal of Geophysical Research: Space Physics, 2018
Alex T. Chartier, Cathryn N. Mitchell, Ethan S. Miller, (2018), Annual Occurrence Rates of Ionospheric Polar Cap Patches Observed using Swarm , Journal of Geophysical Research: Space Physics , https://doi.org/10.1002/2017ja024811

Horseshoes in the High-Latitude Ionosphere

Journal of Geophysical Research: Space Physics, 2018
Ningchao Wang, Seebany Datta-Barua, Alex T. Chartier, Uriel Ramirez, Cathryn N. Mitchell, (2018), Horseshoes in the High-Latitude Ionosphere, Journal of Geophysical Research: Space Physics , 123, 7, 5831--5849, https://doi.org/10.1029/2017ja025077

Imaging the topside ionosphere and plasmasphere with ionospheric tomography using COSMIC GPS TEC

Journal of Geophysical Research: Space Physics, 2016
Pinto Jayawardena, Talini S. and Chartier, Alex T. and Spencer, Paul and Mitchell, Cathryn N., (2016), Imaging the topside ionosphere and plasmasphere with ionospheric tomography using COSMIC GPS TEC, Journal of Geophysical Research: Space Physics, n/a--n/a, http://dx.doi.org/10.1002/2015JA021561

Three-dimensional modeling of high-latitude scintillation observations

Radio Science, 2016
Alex Chartier, Biagio Forte, Kshitija Deshpande, Gary Bust, Cathryn Mitchell, (2016), Three-dimensional modeling of high-latitude scintillation observations, Radio Sci. , http://dx.doi.org/10.1002/2015RS005889

Ionospheric data assimilation and forecasting during storms

Journal of Geophysical Research: Space Physics, 2016
Chartier, Alex T. and Matsuo, Tomoko and Anderson, Jeffrey L. and Collins, Nancy and Hoar, Timothy J. and Lu, Gang and Mitchell, Cathryn N. and Coster, Anthea J. and Paxton, Larry J. and Bust, Gary S., (2016), Ionospheric data assimilation and forecasting during storms, Journal of Geophysical Research: Space Physics, n/a--n/a, http://dx.doi.org/10.1002/2014JA020799

Modeled and observed equatorial thermospheric winds and temperatures

Journal of Geophysical Research: Space Physics, 2015
Alex T. Chartier, Jonathan J. Makela, Hanli Liu, Gary S. Bust, John Noto, (2015), Modeled and observed equatorial thermospheric winds and temperatures, Journal of Geophysical Research: Space Physics , 120, 7, 5832--5844, https://doi.org/10.1002/2014ja020921

Ionospheric imaging in Africa

Radio Sci., 2014
Alex T. Chartier, Joe Kinrade, Cathryn N. Mitchell, Julian A. R. Rose, David R. Jackson, Pierre Cilliers, John-Bosco Habarulema, Zama Katamzi, Lee-Anne Mckinnell, Tshimangadzo Matamba, Ben Opperman, Nicholas Ssessanga, Nigussie Mezgebe Giday, Vumile Tyalimpi, Giorgiana De Franceschi, Vincenzo Romano, Carlo Scotto, Riccardo Notarpietro, Fabio Dovis, Eugene Avenant, Richard Wonnacott, Elijah Oyeyemi, Ayman Mahrous, Gizaw Mengistu Tsidu, Harvey Lekamisy, Joseph Ouko Olwendo, Patrick Sibanda, Tsegaye Kassa Gogie, Babatunde Rabiu, Kees De Jong, Adekola Adewale, (2014), Ionospheric imaging in Africa, Radio Sci., 49, 1, 19--27, http://dx.doi.org/10.1002/2013rs005238

A comparison of the effects of initializing different thermosphere-ionosphere model fields on storm time plasma density forecasts

J. Geophys. Res. Space Physics, 2013
Alex T. Chartier, David R. Jackson, Cathryn N. Mitchell, (2013), A comparison of the effects of initializing different thermosphere-ionosphere model fields on storm time plasma density forecasts, J. Geophys. Res. Space Physics, 118, 11, 7329--7337, http://dx.doi.org/10.1002/2013ja019034

Comparison of temporal fluctuations in the total electron content estimates from EISCAT and GPS along the same line of sight

Ann. Geophys., 2013
B. Forte, N. D. Smith, C. N. Mitchell, F. Da Dalt, T. Panicciari, A. T. Chartier, D. Stevanovic, M. Vuckovic, J. Kinrade, J. R. Tong, I. Häggström, E. Turunen, (2013), Comparison of temporal fluctuations in the total electron content estimates from EISCAT and GPS along the same line of sight, Annales Geophysicae, 31, 4, 745--753, http://dx.doi.org/10.5194/angeo-31-745-2013

A 12year comparison of MIDAS and IRI 2007 ionospheric Total Electron Content

Advances in Space Research, 2012
Alex T. Chartier, Cathryn N. Mitchell, David R. Jackson, (2012), A 12year comparison of MIDAS and IRI 2007 ionospheric Total Electron Content, Advances in Space Research, 49, 9, 1348--1355, http://dx.doi.org/10.1016/j.asr.2012.02.014

The use of ionosondes in GPS ionospheric tomography at low latitudes

J. Geophys. Res., 2012
Alex T. Chartier, Nathan D. Smith, Cathryn N. Mitchell, David R. Jackson, Percy J. C. Patilongo, (2012), The use of ionosondes in GPS ionospheric tomography at low latitudes, J. Geophys. Res., 117, A10, http://dx.doi.org/10.1029/2012ja018054