Michael J. Buonsanto Memorial Lecture Series
For a list of past speakers, please see the Buonsanto Memorial Lecture Series archive.
University of Massachusetts Lowell
Buonsanto Lecture 2026
The 25th annual Michael J. Buonsanto Memorial Lecture will be presented by Ivan Galkin of the University of Massachusetts Lowell. The Buonsanto Lecture topic this year is “Making ‘Realistic Ionosphere’ more realistic with multi-sensor data fusion.”
Date: Friday, November 20, 2026
Time: 3:00 p.m. ET (Eastern time)
The 2026 Buonsanto Lecture will be held both in person and online via Zoom. The zoom link for online attendees will be provided shortly.
About the talk
This lecture by Ivan Galkin will explore the hard, still-unsolved problem in ionospheric weather—the domain of space physics to which Michael Buonsanto dedicated his career—is to reconstruct a hidden, high-dimensional, rapidly evolving global plasma field from sparse, intermittent measurements, and then forecast when and where anomalous conditions will emerge. This lecture presents a cooperative approach to this challenge developed under the Realistic Ionosphere (RION) project, an instrument initiative supported by the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS) to unite the international space-weather research community. RION brings together observations from ionosondes, incoherent scatter radars (ISRs), and global navigation satellite system (GNSS) infrastructures, integrating them within a common framework built around GAMBIT—the Global Assimilative Model of the Bottomside Ionosphere with Topside Extension. Four complementary technologies are central to this approach: (1) NECTAR, a time-to-space associative reconstruction technique for ground-based observatories; (2) ELO, a model-morphing approach that incorporates observations from moving platforms, including radio occultation measurements; (3) fusion of the ground GNSS and ionosonde data streams to characterize the ionosphere’s vertical structure; and (4) an AI-powered library of storm storylines that captures anomalous ionospheric plasma behavior in the context of ongoing heliospheric and geospace activity. Together, these technologies aim to transform sparse, heterogeneous observations into a coherent, dynamically evolving picture of the ionosphere—and to advance the prediction of space-weather disturbances that affect radio systems and other technologies dependent on the near-Earth space environment.
About the speaker
Born in Irkutsk, Siberia, Ivan Galkin spent ten years at the Institute of Solar-Terrestrial Physics before moving to Lowell, Massachusetts, where he has worked for the past 33 years. He holds a bachelor’s degree in Radio Physics and earned his M.S. and D.Sc. at the University of Massachusetts Lowell under Prof. Bodo Reinisch with Prof. George Grinstein as Computer Science adviser. A long-standing interest in machine vision and image understanding led him to space physics, where he specializes in global modeling of ionospheric weather with the Digisonde network. His work has supported two missions, NASA IMAGE and Air Force DSX, and his current research focuses on data fusion across the ionosonde, incoherent scatter radar (ISR), and GNSS communities.
About the series
Dr. Michael J. Buonsanto (1952–1999) was a key member of the Atmospheric Sciences Group at MIT Haystack Observatory from January 1988 until his sudden and untimely death on 21 October 1999. As an MIT Principal Research Scientist, he made many important scientific contributions to studies of the Earth’s upper atmosphere, and was an outstanding and cherished colleague, mentor, and friend. In his honor, Haystack Observatory has established an annual memorial lecture on space science topics at the forefront of the atmospheric science research field.
At Haystack, Buonsanto specialized in mid-latitude physics and chemistry of the upper atmosphere and effects of magnetic storms, significantly advancing these fields worldwide through numerous publications done in wide-ranging collaborations with members of the international aeronomy and space physics community. He was the driving force behind the highly productive US Coupling Energetics and Dynamics of Atmospheric Regions (CEDAR) program’s STORM working group, and was elected to the CEDAR Science Steering Committee. Despite his short career, Michael’s scientific output was prodigious, authoring over 70 refereed scientific articles. He was the single author on 13 of these articles, most notably his 1999 ionospheric storms review paper which continues to be highly referenced today with 650+ citations.
Buonsanto was a graduate of Northwestern University and received Masters degrees in Education and Astronomy from Tufts University and Boston University, respectively, working with Professor Michael Mendillo. He earned his PhD in Engineering from the University of Auckland (New Zealand) under Professor John Titheridge, and devoted most of the 1980s to religious education, teaching, and ionospheric research while living among the people of the Fiji Islands. Michael’s career was characterized by intellectual honesty along with a deep openness and willingness to work with and educate others. Students from middle school to graduate school reaped numerous benefits from his dedicated guidance and supervision. Postdoctoral researchers, visiting scholars, and fellow researchers spanning the globe (whose only contact with him was sometimes online) received his full attention and careful assistance with the datasets needed to further their research.
Buonsanto was an excellent and organized scientist whose many seminal contributions span a wide range of topics in ionospheric physics. His untimely death was a great loss to the community. Michael’s work continues today through the lasting international impacts of his insightful physics, enduring journal articles, research by former students, and in the efforts of his dedicated scientific colleagues.