Seminar

Seminar - Bayes' Rule Gives You Wings: Probabilistic Autonomy for Boundedly Rational Robots - Oct. 23

Jeff Zehnder — Wed, 14 Oct 2026 06:12:12 +0000

Seminar - Bayes' Rule Gives You Wings: Probabilistic Autonomy for Boundedly Rational Robots - Oct. 23 Jeff Zehnder Wed, 10/14/2026 - 00:12

Nisar Ahmed
Associate Professor, Smead Aerospace
Friday, Oct. 23 | 10:40 A.M. | AERO 111

Abstract: Autonomous robotic systems are appearing across land, sea, air, and space. To perform sophisticated tasks in these domains, robots face the common problem of intelligently reasoning about and acting against uncertainties. However, they must also deal with constraints on computing, data, size, power, communications, and safety. As boundedly rational agents, autonomous robots must therefore also be capable of examining and augmenting their limited abilities, if they are to realistically satisfy expectations of self-directedness, self-sufficiency, interactivity, and reliability in achieving desired goals.

I will present developments in probabilistic modeling and algorithm design for realizing these capabilities, led by my research group at the Cooperative Human-Robot Intelligence (COHRINT) Lab. After a brief overview of our work on semantic collaborative active sensing and competency self-assessment for human-robot teams, I will focus on Bayesian state estimation methods for decentralized data fusion (DDF) problems in heterogeneous multi-robot teams. These problems ask how robots can soundly combine local probabilistic beliefs about shared task variables in a peer-to-peer manner, despite having different local state space models and asymmetric sensing, computing, and communication abilities. I will describe our factor graph DDF (FG-DDF) framework and show how it offers the most promising general solution to such problems. FG-DDF exploits novel insights about conditional independence properties of local robot beliefs to avoid information double-counting and drastically reduces computation and communication costs for decentralized data fusion. This permits realistic modular multi-robot decentralized state estimation solutions for large problem domains, such that required costs scale with the number of shared variables (not number of robots). Results from simulation and hardware studies involving GPS-limited multi-robot cooperative navigation and multi-object tracking problems will be presented, driven by applications to search and rescue, defense monitoring, and space exploration.

Bio: Nisar Ahmed is an Associate Professor in the �鶹��Ѱ��Aerospace Engineering Sciences Department, and is Director of RECUV and the COHRINT Lab. He received his B.S.E. from Cooper Union in 2006 and his Ph.D. in Mechanical Engineering from Cornell in 2012, where he was also a postdoctoral researcher from 2012 to 2014. He was awarded the 2011 AIAA GNC Conference Best Paper Award; ASEE Air Force Summer Faculty Fellowship in 2014; 2018 Aerospace Control and Guidance Systems Committee (ACGSC) Dave Ward Memorial Lecture Award; and Smead Aero Faculty Fellowship (2021-2023) and Outstanding Graduate Teaching and Mentorship Award (2021). His work has been supported by the Army, Air Force, DARPA, Navy, NASA, Space Force, and multiple industry sponsors. He is a Member of IEEE and the AIAA Intelligent Systems Technical Committee, and �鶹��Ѱ��Site Director of the NSF Center for Autonomous Aerial Mobility and Sensing (CAAMS).

Autonomous robotic systems are appearing across land, sea, air, and space. To perform sophisticated tasks in...

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Boyd interviewed on recent advances in supersonic jets

Jeff Zehnder — Mon, 12 Oct 2026 14:06:10 +0000

Boyd interviewed on recent advances in supersonic jets Jeff Zehnder Mon, 10/12/2026 - 08:06

Iain Boyd was interviewed by National Geographic for an article on a resurgence in supersonic passenger jet research.

Such flights have been unavailable to the public since the retirement of the Concorde in 2003.

The piece spotlights recent flight tests of Boom Supersonic's XB-1 and NASA's X-59 jets.

Boyd, a professor in the Ann and H.J. Smead Department of Aerospace Engineering Sciences is a leading researcher in hypersonic aerothermodynamics.

Read the full article at National Geographic...

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Seminar: Observing X-ray signatures of space weather and radiation with low-cost space missions - Oct. 16

Jeff Zehnder — Mon, 12 Oct 2026 14:00:45 +0000

Seminar: Observing X-ray signatures of space weather and radiation with low-cost space missions - Oct. 16 Jeff Zehnder Mon, 10/12/2026 - 08:00

Bob Marshall
Associate Professor, Smead Aerospace
Friday, Oct. 16 | 10:40 A.M. | AERO 111

Abstract: My research group has taken three CubeSat missions from proposal to orbit over the past six years. Initiated in the uncertain months of early 2020, AEPEX (NASA Heliophysics), CANVAS (NSF Space Weather), and COSMO (NGA MagQuest) have gone through mission, spacecraft, and instrument development in parallel, and then all three launched within nine days of each other in early 2026. These three missions capture the range of my research program: fundamental space physics, instrument and mission development, applied remote sensing, and everything in between.

In this talk, I'll use these three missions to trace the trajectory of my research group over the past six years, then look ahead to future directions. This talk will focus on AEPEX, the first mission to image energetic electron precipitation using the faint X-rays produced when electrons crash into our atmosphere from above. These X-ray signatures of electron precipitation provide a unique metric for radiation belt activity, and have important impacts on global atmospheric circulation.

I'll discuss the design of the X-ray imaging instrument, its integration into our own 6U CubeSat design, and the path from integration to launch and operations. The AEPEX mission ties directly into numerical simulation and data analysis work in my group aimed at better understanding the many signatures of radiation interactions with atmospheres, which are ubiquitous in magnetized planets with atmospheres. Monte Carlo simulations using the GEANT4 package from CERN let us turn X-ray counts into estimates of the electron spectra depositing energy in the atmosphere. I'll also touch briefly on CANVAS and COSMO, which similarly use unique instruments developed in our lab along with in-house bespoke spacecraft designs. These missions together prove that the small-satellite approach scales from educational missions to novel science and operational, agency-funded systems.

Looking forward, I will introduce two new X-ray imaging missions now in development (IMPAX and RADICALS) that extend AEPEX's approach to new orbits and energy ranges, along with new studies of radiation impacts at Mars and Jupiter. These past and future projects show how energetic particle precipitation reshapes atmospheric chemistry, radiation exposure, and our models of the radiation belts themselves.

My research group has taken three CubeSat missions from proposal to orbit over the past six years. Initiated in the uncertain months of early 2020, AEPEX, CANVAS, and COSMO have gone...

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Seminar: Autonomous Action and Interaction Under Uncertainty - Oct. 9

Jeff Zehnder — Mon, 05 Oct 2026 14:31:39 +0000

Seminar: Autonomous Action and Interaction Under Uncertainty - Oct. 9 Jeff Zehnder Mon, 10/05/2026 - 08:31

Zachary Sunberg
Assistant Professor, Smead Aerospace
Friday, Oct. 9 | 10:40 A.M. | AERO 111

Abstract: Autonomous aerospace vehicles can tackle challenges ranging from collecting scientific data in hazardous environments to defending against swarms of attacking drones in ways that are impossible for humans alone. Tasks like these require overcoming uncertainty in the environment and interacting strategically with other humans and artificially-intelligent systems. The partially observable Markov decision process (POMDP) and partially observable stochastic game (POSG) are mathematical models that can represent many types of uncertainty and strategic interaction. However, finding solutions for these problems is notoriously difficult. The Autonomous Decision and Control Lab (ADCL) has studied these problems from a variety of perspectives ranging from mathematical theory to tests with real humans and developed algorithms that can solve them in surprisingly efficient ways. This talk will describe the challenges that make this task difficult, some of our key discoveries, and some of the questions that we want to answer in the future.

Bio: Zachary Sunberg is an Assistant Professor in the Ann and H.J. Smead Aerospace Engineering Sciences Department and director of the Autonomous Decision and Control Lab. He earned Bachelors and Masters degrees in Aerospace Engineering from Texas A&M University and a PhD in Aeronautics and Astronautics at Stanford University. Before joining the University of Colorado faculty, he served as a postdoctoral scholar at the University of California, Berkeley. In 2024, he received the NSF CAREER award. His research is focused on safe and efficient operation of autonomous vehicles and systems on the ground, in the air, and in space. A particular emphasis is on handling uncertainty using the partially observable Markov decision process and game formalisms.

Autonomous aerospace vehicles can tackle challenges ranging from collecting scientific data in hazardous environments to defending against swarms of attacking drones in ways that are impossible for...

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Seminar - From Field Sites to Satellites: Multi-Scale Remote Sensing and In Situ Observations of Cryospheric Albedo Reduction and Biogeochemical Feedbacks - Oct. 2

Jeff Zehnder — Mon, 28 Sep 2026 18:50:48 +0000

Seminar - From Field Sites to Satellites: Multi-Scale Remote Sensing and In Situ Observations of Cryospheric Albedo Reduction and Biogeochemical Feedbacks - Oct. 2 Jeff Zehnder Mon, 09/28/2026 - 12:50

Alia Khan
Associate Professor, Smead Aerospace
Friday, Oct. 2 | 10:40 A.M. | AERO 111

Abstract: The global cryosphere is undergoing rapid transformation. A missing component of snow and ice melt projections is biologically driven albedo reduction from algal blooms growing on snow and ice surfaces. Other light-absorbing particles (LAPs), including wildfire-derived black carbon and mineral dust, not only directly drive cryospheric darkening, but also indirectly serve as nutrient sources for snow and ice algae. Resolving these fine-scale, dynamic bio-optical and aerosol feedbacks across regional and global scales is essential to constraining major sources of uncertainty in Earth system modeling, water resource management, and sea-level rise projections. This seminar presents an integrative research framework that bridges aerospace remote sensing, analytical wet-lab biogeochemistry, and spectral geophysics to address these multi-scale feedbacks.

Exploiting the distinct absorption features of algal pigments and dust mineralogy, my research group leverages multi-platform observations by combining multi-sensor UAV payloads, low-latency commercial SmallSat data (SkySat), and spaceborne hyperspectral sensors (NASA PACE) to unmix discrete spectral signatures (e.g., penguin guano from snow algae and dust) and map surface darkening at resolutions ranging from sub-centimeter scales using UAVs to 0.5 meters via commercial satellites. Ground-based and laboratory analyses (e.g., LC-Q/TOF mass spectrometry, flow cytometry, and SP2-XR/D single-particle aerosol soot characterization) are used to validate aerial observations, develop novel algorithms for remote concentration retrieval, and evaluate Snow Ice Aerosol Radiation (SNICARv3) model parameterizations against in-situ hyperspectral albedo measurements.

To overcome operational hazards in extreme environments, we are also developing autonomous field robotics, including a custom NSF-funded, UAV-mounted robotic sampler—designed and built with �鶹��Ѱ��engineering students—for remote physical sample retrieval across hard-to-access polar and glaciated terrain. Finally, this presentation highlights scholarly contributions since Fall 2022, including external research funding across NASA and NSF supporting field campaigns in Antarctica, Greenland, Alaska, and the North Cascades.

Bio: Dr. Alia Khan is an Associate Professor in Aerospace Engineering Sciences at �鶹��Ѱ��Boulder, where she leads the Cryosphere Remote Sensing and Biogeochemistry Group. She is an alumna of the �鶹��Ѱ��Environmental Engineering program and INSTAAR. After completing her PhD in 2016, she then worked as a Postdoc at the National Snow and Ice Data Center with a primary focus on water and snow chemistry in High Mountain Asia as part of a USAID funded project. Dr. Khan was an Assistant and Associate Professor at Western Washington University in Bellingham from 2019 - 2025 before returning to CU.

The global cryosphere is undergoing rapid transformation. A missing component of snow and ice melt projections is biologically driven albedo reduction from algal blooms growing on snow and...

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Seminar: Robots for Moon, Mars, and The Space In Between - Oct. 5

Jeff Zehnder — Thu, 24 Sep 2026 16:42:17 +0000

Seminar: Robots for Moon, Mars, and The Space In Between - Oct. 5 Jeff Zehnder Thu, 09/24/2026 - 10:42

Rudranarayan Mukherjee
Chief Architect, Katalyst Space
Monday, Oct. 5 | 2:30 P.M. | AERO N250

Abstract: When we picture space robotics, Mars rovers and the ISS robotic arm usually steal the show. Yet the past decade has sparked a quiet revolution in how robots enable novel science and national security missions. This talk discusses emerging applications for space robotics, moving from Earth-observation and deep-space astrophysics servicing to planetary exploration and national interest. Highlighting end-to-end terrestrial analog demonstrations (robots assembling trusses, solar panels, radars, and optical telescopes, servicing satellites, and hazardous terrain mobility and logistics), we will dissect the tight coupling required across hardware-software co-design, flight autonomy, AI/ML, and high-fidelity modeling and simulation. We conclude with a roadmap for scaling these systems and actionable pathways for researchers, engineers, and innovators to enter the domain.

Bio: Dr. Rudranarayan Mukherjee is a space robotics authority who served as principal investigator for NASA, NOAA, JPL, DARPA, CDC, DIU, SDA and other national stakeholders. During nearly two decades at NASA’s Jet Propulsion Laboratory (JPL), he served as JPL’s lead for In-Space Servicing, Assembly, and Manufacturing (ISAM) and on the NASA Strategic Capability Leadership Team for RPO-D/C (rendezvous, proximity operations, and docking/capture). His technical leadership experience includes the full spectrum of robotic system development and projects such as Mars Curiosity rover, Mars and Lunar Sample Return, Habitable Worlds Observatory, DARPA’s Robotic Servicing of Geosynchronous Satellites among others. He also led high profile activities such as the NASA In-Space Assembled Telescope study and contributed heavily to US policy on ISAM by founding the the Space SMART Think Tank. An elected member of the ASME Technical Committee on Multibody Dynamics and Nonlinear Systems, he currently serves as Chief Architect at Katalyst Space Technology (Broomfield, CO), leading ISAM flight mission implementations, one for spacecraft deorbiting and another for robotic assembly for power-beaming.

When we picture space robotics, Mars rovers and the ISS robotic arm usually steal the show. Yet the past decade has sparked a quiet revolution in how robots enable novel science and...

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Seminar: Leveraging Radar Systems and Ambient Radio Signals for Remote Sensing of the Terrestrial and Space Environment - Sept. 25

Jeff Zehnder — Mon, 21 Sep 2026 16:58:22 +0000

Seminar: Leveraging Radar Systems and Ambient Radio Signals for Remote Sensing of the Terrestrial and Space Environment - Sept. 25 Jeff Zehnder Mon, 09/21/2026 - 10:58

Sean Peters
Assistant Professor, Smead Aerospace
Friday, Sept. 25 | 10:40 A.M. | AERO 111

Abstract: Radar remote sensing observations are critical for understanding and predicting our evolving Earth and planetary systems. However, traditional radars must transmit their own powerful electromagnetic pulses to measure surface and subsurface properties from echo reflections. As such, these systems are resource-intensive in terms of cost, power, and logistics, particularly when aiming to continuously monitor extreme environments (e.g., ice sheets, the space environment, and planetary bodies) across their evolving characteristic spatial and temporal scales.

In this talk, I will describe our group’s work to develop passive radar systems and signal processing techniques that leverage ambient electromagnetic signals (natural, radio-astronomical, and anthropogenic) for remote sensing observations, reducing the need for active transmission. In particular, I will present the design, development, and field experiments in Death Valley and Iceland of the Passive Autonomy, Navigation, Topography, and Habitability Exploration Radar (PANTHER); this includes an in-situ demonstration of echo detection using high frequency (HF) Jovian radio bursts, which is a key step towards developing a low-resource passive HF radar for future planetary missions.

In the second part of my talk, I will describe how my group extends radar remote sensing across terrestrial and planetary domains. Terrestrially, this includes forward modeling of radar return signatures of wildfire smoke plumes. On the planetary side, this includes modeling passive radar mission concepts using alternative radio-astronomical sources (such as Saturn's kilometric radiation for investigating Titan and Enceladus). Lastly, I will present our work to develop a fast, coherent, 3D radar sounder simulator for complex subsurfaces at planetary scales, with the potential to bridge both domains. This work highlights how recycling ambient electromagnetic signals and advancing radar techniques can enable new pathways for Earth and planetary remote sensing, offering both scientific insights and potential advantages in challenging environments.

Bio: Dr. Sean Peters is an Assistant Professor of Aerospace Engineering Sciences at the �鶹��Ѱ��. His research bridges radar engineering, signal processing, and geophysics to develop low-resource radar remote sensing technologies for observing terrestrial, planetary, and space environments. He received his B.S. degree in Electrical Engineering from Rice University in 2015, and M.S. and Ph.D. degrees in Electrical Engineering from Stanford University in 2017 and 2020, respectively. Before joining �鶹��Ѱ��Boulder, he was an Assistant Professor in the Department of Physics and a Space Systems Academic Group faculty affiliate at the Naval Postgraduate School, Monterey, CA. Prior to NPS, he was a Technical Staff Member in the Airborne Radar Systems and Techniques Group at MIT Lincoln Laboratory.

Radar remote sensing observations are critical for understanding and predicting our evolving Earth and planetary systems. However, traditional radars must transmit their...

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Seminar - Understanding Aerospace Plasmas and Magnetoaerodynamics to Enhance Hypersonics at Earth and Beyond - Sept. 18

Jeff Zehnder — Fri, 11 Sep 2026 23:17:05 +0000

Seminar - Understanding Aerospace Plasmas and Magnetoaerodynamics to Enhance Hypersonics at Earth and Beyond - Sept. 18 Jeff Zehnder Fri, 09/11/2026 - 17:17

Hisham Ali
Assistant Professor, Smead Aerospace
Friday, Sept. 18 | 10:40 A.M. | AERO 111

Abstract: A critical phase of both spaceflight at Earth and exploration of planetary bodies is hypersonic atmospheric entry. During this hypersonic phase of flight, there exists a highly heated, ionized plasma flow around the vehicle driven by the conversion of kinetic energy to thermal energy. Through application of a magnetic field from within a vehicle, a magnetohydrodynamic (MHD) flow interaction is possible with this entry plasma to benefit hypersonic vehicle performance, with the potential to expand operating envelopes by augmenting aerodynamic control forces and reducing aerothermal heating loads.

However, experimental demonstrations of this type of MHD interaction in conditions and configurations relevant to hypersonic entry systems are extremely limited, with few test facilities capable of creating relevant conditions in the global research community.

In establishing the Magnetoaerodynamics and Aerospace Plasmas Laboratory at the �鶹��Ѱ��, I have aimed to address this gap through the multi-year design, development, and commissioning several unique radio-frequency (RF) inductively coupled plasma (ICP) tunnel facilities with power levels up to 40kW. These facilities produce high temperature, chemically pure, continuous plasma flows within vacuum chambers to simulate plasmas formed during high altitude hypersonic entry flight for Earth and other planetary bodies such as Mars, Venus, and the Ice Giants in ground-based test facilities.

Overall, the facility is one of less than five such high power RF inductively coupled plasma tunnel facilities in US academia, and its uniquely high vacuum pumping capacity can maintain lower chamber base pressures for simulating high altitude hypersonic flight environments. The laboratory includes access for various plasma, fluid, and thermal diagnostics to facilitate hypersonics experimental investigations with a unique focus on magnetohydrodynamics for hypersonics and aerospace plasmas—magnetoaerodynamics.

In my talk, I will discuss mission design studies quantifying the impact of magnetoaerodynamics on hypersonic entry systems as well as several experimental studies leveraging our unique plasma tunnel facilities, including fundamental studies of the aerothermochemistry for non-equilibrium expanding plasma flows, aerothermal environment testing for hypersonic thermal protection system materials, ground-based experimental investigations of RF signal propagation through hypersonic entry-relevant plasmas, and novel experimental studies of MHD interactions such as aerodynamic force augmentation and aerothermal heating mitigation.

Bio: Hisham Ali is an Assistant Professor in the Ann and H.J. Smead Department of Aerospace Engineering Sciences at The �鶹��Ѱ��.

Prior to joining �鶹��Ѱ��Boulder, Prof. Ali was a Member of Technical Staff at The Aerospace Corporation Colorado Springs and a Research Engineer and Postdoctoral Fellow at the Georgia Institute of Technology. Prof. Ali earned a Bachelor of Science in Aerospace Engineering with minors in Mathematics and Computer Based Honors from The University of Alabama in May 2013 and earned his Master of Science and Doctor of Philosophy in Aerospace Engineering from the Georgia Institute of Technology in May 2015 and August 2019, respectively.

Prof. Ali is a recipient of the 2026 Office of Naval Research Young Investigator Award, and his research team includes nine PhD students with interests in hypersonics and aerospace plasmas with numerous national fellowship awards from NASA, NSF, and Industry. Prof. Ali’s current research interests are in hypersonics, plasma physics, magnetohydrodynamics, and planetary entry systems.

A critical phase of both spaceflight at Earth and exploration of planetary bodies is hypersonic atmospheric entry. During this...

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Seminar: Toward predictive models for gas phase phenomena in hypersonic flows - Sept. 11

Jeff Zehnder — Tue, 08 Sep 2026 19:05:59 +0000

Seminar: Toward predictive models for gas phase phenomena in hypersonic flows - Sept. 11 Jeff Zehnder Tue, 09/08/2026 - 13:05

Robyn Macdonald
Assistant Professor, Smead Aerospace
Friday, Sept. 11 | 10:40 A.M. | AERO 111

Abstract: Understanding hypersonic flowfields is important for vehicle design for both space exploration and national defense applications. However, computational models for hypersonic flows require coupling a variety of physics which may not be well understood.

As one example, gas phase chemical reactions can affect the energy balance, and can couple with other flows physics to impact the prediction of surface quantities such as heat flux. In addition, surface roughness either due to design or ablation can trigger transition to turbulence, which also influences both heat flux and aerodynamic loads crucial for vehicle design.

This talk will highlight work aimed at improving predictive capabilities for hypersonic flows focused in two areas: first, understanding the fundamental chemical processes occurring in hypersonic flows and constructing models for computational fluid dynamics (CFD) for such processes, and second, enabling high-fidelity simulations of turbulent hypersonic flows including the effects of chemistry or roughness. In the first area, we make use of ab initio chemistry data to understand at a microscopic level the chemical processes occurring in the gas.

Using information and data from microscopic scale simulations, we construct simplified models for application to CFD. In the second area, I will highlight work focused on incorporating finite rate chemistry phenomena to enable scale resolved simulations of hypersonic flowfields using large eddy simulation, as well as work focused on understanding the effect of roughness on supersonic turbulent boundary layers.

Bio: Robyn Macdonald is an Assistant Professor of Aerospace Engineering Sciences at the �鶹��Ѱ��. Her research interests include gas-phase chemical kinetics, and turbulence and transition modeling for hypersonic flows. Prior to joining CU, she was a post-doctoral fellow at the University of Minnesota. She received her B.S. and Ph.D. at the University of Illinois at Urbana-Champaign in 2013 and 2019 respectively. She is the recipient of the Air Force Office of Scientific Research Young Investigator Award and NASA Early Career Faculty Award.

Understanding hypersonic flowfields is important for vehicle design for both space exploration and national defense applications. However, computational models for hypersonic flows require coupling a variety of...

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Seminar - Measuring Earth’s Time-Variable Gravity with Future Satellite Constellations: From MAGIC to Orbiting Optical Clocks and Beyond - Sept. 4

Jeff Zehnder — Wed, 26 Aug 2026 18:51:09 +0000

Seminar - Measuring Earth’s Time-Variable Gravity with Future Satellite Constellations: From MAGIC to Orbiting Optical Clocks and Beyond - Sept. 4 Jeff Zehnder Wed, 08/26/2026 - 12:51

Khosro Ghobadi-Far
Assistant Professor, Smead Aerospace
Friday, Sept. 4 | 10:40 A.M. | AERO 111

Abstract: Measuring temporal changes in Earth’s gravity field provides a unique way to monitor redistribution of water and ice associated with processes such as icesheet mass loss, groundwater depletion, and floods. The NASA GRACE (2002-2017) and GRACE Follow-On (2018-present) missions have demonstrated this capability by using ultra-precise inter-satellite ranging to track changes in the distance between two co-orbiting satellites.

However, their ability to resolve smaller-scale and more rapidly changing signals is limited by a spatial resolution of about 300 km and typical monthly sampling. Future satellite gravimetry missions offer an exciting opportunity to overcome these limitations.

In this talk, I will first demonstrate the potential of the future dual-pair MAGIC satellite constellation, consisting of the NASA polar GRACE-C pair and the ESA inclined NGGM pair, to improve spatial and temporal resolution of mass change estimates. I will then explore orbiting optical clocks as a new approach to satellite gravimetry and evaluate their performance for different satellite formation flying architectures.

A comparison of optical-clock and inter-satellite ranging approaches, including their performance against MAGIC, will highlight the strengths and limitations of each technique and provide insights into promising architectures for future missions. These results highlight the potential of future satellite gravimetry to provide more detailed observations of Earth system dynamics at various spatial and temporal scales.

Bio: Dr. Khosro Ghobadi-Far is an Assistant Professor in the Ann and H. J. Smead Department of Aerospace Engineering Sciences and a Fellow of CIRES. His fundamental research focuses on modeling Earth’s gravity field using current and future satellite constellations, while his applied research focuses on remote sensing of freshwater resources.

He received his B.S. in Civil Engineering-Geomatics from the University of Tabriz, an M.S. in Geodesy from the University of Tehran, and a Ph.D. in Geodesy from the University of Newcastle. He was a postdoctoral scholar at Virginia Tech before joining the �鶹��Ѱ��.

Measuring temporal changes in Earth’s gravity field provides a unique way to monitor redistribution of water and ice associated with processes such as...

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