All seminars will take place at this Zoom link

Upcoming Seminars

Join us for our next seminar

The Response of Rotating Stellar Convection to Latitudinally Varying Heat Flux

Wed Feb 11, 2026 10:00 - 11:00 PST

Presenter: Kinfe Teweldebirhan Gebreegzabihar - SwRI

Location: Zoom

COFFIES March Seminar — Wed Mar 11, 2026 10:00 - 11:00 PDT

Presenter: Sarbani Basu - Yale

Location: zoom and Stanford University

COFFIES April Seminar — Wed Apr 08, 2026 10:00 - 11:00 PDT

Presenter: Sami Solanki - MPS

Location: Zoom

COFFIES May Seminar — Wed May 13, 2026 10:00 - 11:00 PDT

Presenter: Travis Metcalfe - White Dwarf Research Corporation

Location: Zoom

Past Seminars

Denotes recording available

Helioseismic evidence for thermal and magneto-Rossby waves — Wed Jan 14, 2026 08:30 - 09:30 PST

Shravan Hanasoge, Tata Institute of Fundamental Research, Mumbai

An AI-powered Surface Flux Transport model to measure high-resolution velocity fields and forecast magnetic flux emergence — Tue Dec 09, 2025 11:00 - 12:00 PST

Andrés Muñoz-Jaramillo, SwRI

Time Dependence of Solar Meridional Circulation — Tue Nov 11, 2025 11:00 - 12:00 PST

Prof. Roger Ulrich, UCLA   

High-resolution simulations for solar convection, magnetic field, and large-scale flows — Tue Oct 14, 2025 15:00 - 16:00 PDT

Hideyuki Hotta, Nagoya University

Rescheduled for October — Tue Sep 09, 2025 15:00 - 16:00 PDT

Dr. Hideyuki Hotta, Nagoya University

The Dynamo Confinement Scenario for a Radiatively Spreading Tachocline — Tue Aug 12, 2025 11:00 - 12:00 PDT

Dr. Loren Matilsky, University of California, Santa Cruz   

The dynamics of small-scale magnetic fields modulated by the solar cycle — Tue Jul 08, 2025 11:00 - 12:00 PDT

Dr. Marco Stangalini, Italian Space Agency (Agenzia Spaziale Italiana)   

NO JUNE COFFIES SEMINAR — Tue Jun 10, 2025 00:00 - 00:00 PDT

N/A,

The Power of Perspective: How Seeing the Whole Sun Will Change Space Exploration — Tue May 13, 2025 11:00 - 12:00 PDT

Nour Raouafi, JHU APL   

Stellar Superflares and Exoplanetary Space Weather — Tue Apr 08, 2025 16:00 - 17:00 PDT

Kazunari Shibata, Kyoto University   

Does the Sun have polar vortices? — Tue Mar 11, 2025 11:00 - 12:00 PDT

Mausumi Dikpati, High Altitude Observatory at the National Center for Atmospheric Research   

Beyond Detection: Global Inertial Modes as Probes of the Convection Zone — Tue Feb 11, 2025 11:00 - 12:00 PST

Laurent Gizon, Max Planck Institute for Solar System Research

Raising awareness on mental health in the heliophysics community — Tue Jan 14, 2025 11:00 - 12:00 PST

Romina Nikoukar, JHU/APL   

NO DECEMBER COFFIES SEMINAR — Tue Dec 10, 2024 00:00 - 00:00 PST

N/A,

Time Variation of the Tachocline — Tue Nov 12, 2024 11:00 - 11:50 PST

Sarbani Basu, Yale University   

Solar Cycle and Solar Max — Tue Oct 08, 2024 11:00 - 11:50 PDT

Lisa Upton, SwRI   

Application of Ensemble Kalman Filter Data Assimilation Technique to Infer the Surface Flows with Surface Flux Transport Model — Tue Sep 10, 2024 11:00 - 11:50 PDT

Dr. Soumyaranjan Dash, University of Hawai‘i at Mānoa   

NO AUGUST COFFIES SEMINAR — Tue Aug 13, 2024 00:00 - 00:00 PDT

N/A,

Baroclinic instability as an essential regulator of the Sun’s differential rotation — Tue Jul 09, 2024 11:00 - 11:50 PDT

Yuto Bekki, Max Planck Institute for Solar System Research   

Inertial Oscillations in the Solar Interior — Tue Jun 11, 2024 11:00 - 11:50 PDT

Catherine Blume, CU Boulder   

Solaris: A Focused Solar Polar Mission to Achieve the Highest Priority Science Now — Tue May 14, 2024 11:00 - 11:50 PDT

Dr. Don Hassler, Southwest Research Institute

NO APRIL COFFIES SEMINAR — Tue Apr 09, 2024 00:00 - 00:00 PDT

N/A,

Cultural Expressions of the Sun — Tue Mar 12, 2024 11:00 - 11:50 PDT

Bryan Mendez, LHS, UC Berkeley   

Spatiotemporal evolution of the quiet Sun magnetic fields and their role in the chromospheric heating — Tue Feb 13, 2024 11:00 - 11:50 PST

Dr. Milan Gošić, LMSAL/BAERI   

The Sun Touches Everything, the January Theme of the Heliophysics Big Year — Tue Jan 09, 2024 11:00 - 11:50 PST

Shea Hess-Webber (COFFIES), Amy Keesee (CGS) & Erick Powell (SHIELD), Stanford, UNH, BU   

NO DECEMBER COFFIES SEMINAR — Tue Dec 12, 2023 00:00 - 00:00 PST

N/A,

Citizen Science: Collaborating with the world to understand the universe — Tue Nov 14, 2023 11:00 - 11:50 PST

Dr. Pamela L. Gay, Planetary Science Institute   

Inflows towards Bipolar Magnetic Active Regions and Their Nonlinear Impact on a Three-Dimensional Babcock-Leighton Solar Dynamo Model — Tue Oct 10, 2023 11:00 - 11:50 PDT

Kinfe Teweldebirhan, Aksum University, Ethiopia & HAO/NCAR   

Measurements of Global Magnetic Properties of Sunspots — Tue Sep 12, 2023 11:00 - 11:50 PDT

Jing Li, UCLA   

NO AUGUST COFFIES SEMINAR — Tue Aug 08, 2023 00:00 - 00:00 PDT

N/A,

The Topology of Magnetic Fields in Solar Active Regions — Tue Jul 11, 2023 11:00 - 11:50 PDT

Breno Raphaldini, NCAR/HAO   

Observational constraints on the Sun’s global dynamo — Tue Jun 13, 2023 11:00 - 11:50 PDT

Robert Cameron, Max Planck Institute for Solar System Research, Germany   

Evolution of rotation and magnetic activity of the Sun and solar-like stars from photometric data — Tue May 09, 2023 11:00 - 11:50 PDT

Savita Mathur, Instituto de Astrofisica de Canarias, Spain   

Theoretical Model of an Intriguing layer of The Sun: The Near Surface Shear Layer — Tue Apr 11, 2023 11:00 - 11:50 PDT

Bibhuti Kumar Jha, Southwest Research Institute, Boulder   

Neurodiversity and Talent in the Workplace — Tue Mar 14, 2023 11:00 - 11:50 PDT

Roshana Babu, Kindwell Inc.

Fast equator, poleward flow, and near-surface shear layer in high-resolution simulation — Tue Feb 14, 2023 15:00 - 15:50 PST

Prof. Hideyuki Hotta, Chiba university, Japan

Optimally depth-resolved photospheric inversions using the iterative OLA method and tool for optimal spectral line selection — Tue Jan 10, 2023 11:00 - 11:50 PST

Piyush Agrawal, SwRI   

NO DECEMBER COFFIES SEMINAR — Tue Dec 13, 2022 00:00 - 00:00 PST

N/A,

Predicting the Solar Cycle: Where do we stand? — Tue Nov 08, 2022 11:00 - 11:50 PST

Dibyendu Nandi, Indian Institute of Science Education and Research, Kolkata   

Impact of subsurface convective flows on the formation of sunspot magnetic field and energy build-up — Tue Oct 18, 2022 11:00 - 11:50 PDT

Takafumi Kaneko, LMSAL & HAO/NCAR   

Solar supergranulation and the convective conundrum: Observations and a bit of theory — Tue Oct 11, 2022 11:00 - 11:50 PDT

Vincent Böning, Max Planck Institute for Solar System Research   

Solar Magnetic Fields Before and During Eruptions — Tue Sep 13, 2022 11:00 - 11:50 PDT

Maria (Masha) Kazachenko, CU, Boulder & NSO   

NO AUGUST COFFIES SEMINAR — Tue Aug 09, 2022 00:00 - 00:00 PDT

N/A,

KAVLI PRIZE LECTURE — Mon Aug 08, 2022 11:30 - 12:30 PDT

Roger Urlich, UCLA   

The Hale Cycle Clock — Tue Jul 12, 2022 11:00 - 11:50 PDT

Bob Leamon, UMBC/GSFC   

Rise of Buoyant Magnetic Structures through Convection — Tue Jun 14, 2022 11:00 - 11:50 PDT

Bhishek Manek, CU Boulder/LASP   

Suppression of Torus Instability on Cool Stars — Thu May 12, 2022 11:00 - 11:50 PDT

Xudong Sun, U. of Hawaii   

The Near-Surface Shear Layer — Tue May 10, 2022 11:00 - 11:50 PDT

Nick Featherstone, Loren Matilsky, Junwei Zhao, Rudi Komm, SwRI; UCSC; Stanford; AURA   

The Solar Tachocline: State of the Union — Tue Apr 12, 2022 11:00 - 11:50 PDT

Nicholas Brummell, Gustavo Guerrero, Sarbani Basu & Sylvain Korzennik, UC Santa Cruz; Federal University of Minas Gerais; Yale; Harvard Smithsonian CfA   

The COFFIES Flux Transport and Emergence Theme: Connecting Models and Observational Data — Tue Mar 08, 2022 11:00 - 11:50 PST

Bill Abbett & Aimee Norton, UC Berkeley & Stanford University   

Hemispheric sign preference of magnetic helicity in the Sun and its relation to long-term flaring activity — Tue Feb 15, 2022 11:00 - 11:50 PST

Sung-Hong Park, Stanford University   

Modeling the Solar Dynamo: Past, Present and Future — Thu Feb 10, 2022 10:00 - 10:50 PST

Gustavo Guerrero, NJIT   

Is the subsurface meridional flow zero at the equator? — Tue Feb 08, 2022 12:00 - 12:50 PST

Rudi Komm, NSO   

From quiet Sun to active regions and beyond, 10+ years of MURaM simulations — Tue Dec 07, 2021 11:00 - 11:50 PST

Matthias Rempel, High Altitude Observatory   

Improved Measurements of the Sun’s Meridional Flow and Torsional Oscillation from Correlation Tracking on MDI and HMI Magnetograms — Tue Nov 09, 2021 11:00 - 11:50 PST

Sushant Mahajan, University of Hawai'i   

Numerical Convergence in Implicit Large Eddy Simulations of Turbulent Convection — Tue Oct 12, 2021 11:00 - 11:50 PDT

Gustavo Guerrero, Universidade Federal de Minas Gerais, Brazil   

Giant Fields of Small Stars. New Insights into M-Dwarf Magnetism — Tue Sep 14, 2021 11:00 - 11:50 PDT

Oleg Kochukhov, Uppsala University, Sweden   

Far-side activity in surface flux transport simulations — Tue Aug 10, 2021 11:00 - 11:50 PDT

Alexei A. Pevtsov, National Solar Observatory   

Solar Polar Vortices — Tue Jul 13, 2021 11:00 - 11:50 PDT

David H. Hathaway, Stanford University   

Sunny-Side Up: The Promise of Solaris — Tue May 11, 2021 11:00 - 11:50 PDT

Sarah Gibson, High Altitude Observatory

Solar Activity and Dynamics in a Stellar Context — Tue Apr 13, 2021 11:00 - 11:50 PDT

Travis Metcalfe, Space Science Institute   

Machine-learning Framework for Solar Data Processing — Tue Mar 09, 2021 11:00 - 11:50 PST

Egor Illarionov, Lomonosov Moscow State University

Lessons Learned from Stellar Simulation — Tue Feb 09, 2021 11:00 - 11:50 PST

Alan Wray, NASA Ames Research Center

How Good Is the Bipolar Approximation of ARs for Surface Flux Transport? — Wed Jan 13, 2021 11:00 - 11:50 PST

Anthony Yeates, Durham University

The Emergence of Magnetic Structures from the Deep Solar Interior — Tue Sep 01, 2020 11:00 - 11:50 PDT

Nicholas Brummell, University of California Santa Cruz

A Biased View on 20+ Years of Global Helioseismology — Tue Aug 04, 2020 11:00 - 11:50 PDT

Sylvain G. Korzennik, Center for Astrophysics - Harvard & Smithsonian