Exploring the Sun's Role in a Changing Cryosphere
September 15-19, 2025
Fairbanks, Alaska
Science Program Agenda
The full Abstract Book with details about the presentation summaries and authors will be distributed at the Symposium
= VIRTUAL PRESENTATIONS
Monday, September 15
Welcoming Reception
Fountainhead Antique Auto Museum at Wedgewood Resort
View Logistics page for additional info.
Tuesday, September 16
Sunrise Breakfast Buffet
Scrambled Eggs, Sausage and Bacon, Seasonal Fruit, Assorted Pastries, Breakfast Potatoes
Welcome/Introduction
Tom Woods, LASP, University of Colorado Boulder
David Considine, NASA Headquarters
Overview and Status of NASA Earth Science Division
Patrick Taylor (Invited), NASA Langley Research Center
S3.1 The albedo of sea ice: Observations, Models, and Arctic Climate Change
Svetlana Stuefer (Keynote), University of Alaska Fairbanks
S3.2. Overview of NASA SnowEx Alaska field campaigns in 2022-2023
Hailong Wang (Invited), Pacific Northwest National Laboratory
S3.3. Overview of NASA’s Aerosol Cloud Meteorology Interactions over the Western Atlantic Experiment (ACTIVATE)
Dong Wu, NASA Goddard Space Flight Center
S3.4. Polar Cloud Observations from Multi-LEO Stereo IR Imaging During Day and Night
Break
Francesco Berrilli (Keynote), Dipartimento di Fisica, Universitá degli Studi di Roma Tor Vergata, Rome, Italy
S1.1. Reconstructing a Thousands Years of Solar Irradiance
Theodosios Chazistergos (Invited), Max Planck institute for solar system research, Göttingen, Germany
S1.2. Reassessing the Hoyt and Schatten 1993 Total Solar Irradiance Model
Erik Richard (Invited), LASP, University of Colorado Boulder
S1.3. The TSIS-1 & 2 Contributions to a Long-term Solar Spectral Irradiance Data Record
Greg Kopp, LASP, University of Colorado Boulder
S1.4. TSI Topics
Lunch Buffet – Taco Bar
Natalie Krivova (Invited), Max Planck Institute for Solar System Research, Göttingen, Germany
S1.5. Understanding Modeling, and Reconstructing Solar Irradiance Variability Across Different Time Scales
Odele Coddington and Judith Lean (Invited), Laboratory for Atmospheric and Space Physics, University of Colorado Boulder
S1.6. Recent Advances in Modeling the Magnitude and Variability of Solar Irradiance: The New Version 3 of the Operational NOAA/NCEI Solar Irradiance Climate Data Record
Mustapha Meftah, CNRS-UVSQ-LATMOS, Paris, France
S1.7. The SOLAR-HRS New High-Resolution Solar Spectra for Disk-Integrated, Disk-Center, and Intermediate Cases
Tom Woods, LASP, University of Colorado Boulder
S1.8. Creation and Testing of Next-generation Irradiance Proxies (CATNIP): Filling the Gaps in TSIS-1 Observations
Sergey Marchenko, Science Systems and Applications, Inc., Latham, MD
S1.9. Magnetic Flux and Total Solar Irradiance during Solar Minima: Going Tiny
BREAK
Janet Machol, CIRES, University of Colorado Boulder
S1.10. Fifty Years of GOES Solar Irradiance Measurements
Irina Panyushkina and Tim Jull (Keynote), Geosciences, University of Arizona
S1.11. Large solar flares and other events recorded in carbon-14 in tree rings
Tiehan Zhou, NASA Goddard Space Flight Center
S1.12. Exploring the Modulation of the QBO Periods by the Solar Cycle.
Jia Yue, NASA Goddard Space Flight Center
S1.13. Two solar cycles of SABER/TIMED middle atmosphere observations and lessons learned.
Lon Hood and C.A. Hoopes, Lunar and Planetary Laboratory, University of Arizona, Tucson
S1.14. Effects on the North Pacific Storm Track of 27-day Solar UV Forcing of Stratospheric Circulation.
Wednesday, September 17
Sunrise Breakfast Buffet
Scrambled Eggs, Sausage and Bacon, Seasonal Fruit, Assorted Pastries, Breakfast Potatoes
Nicolas Brehm (Invited), Laboratory of Tree Ring Research, University of Arizona, and Laboratory of Ion Beam Physics, ETH Zurich
S4.1. Studying solar variability with radiocarbon in tree rings
Short Break
Xianglei Huang (Invited), University of Michigan, Ann Arbor
S2.1. Understand the influence of solar spectral irradiance on the high-latitude climate: a spectral albedo feedback perspective and implication for the 2020s temperature anomaly
Leah Bertrand (Invited), CIRES, University of Colorado Boulder
S2.2. Increasing wintertime Arctice cloud opacity increases surface longwave radiation at a long-term observatory
Lorenza Lucaferri, University of Rome Tor Vergata, Rome, Italy
S2.3. Climate sensitivity of polar regions to solar irradiance minima
Break
Lynn Harvey (Invited), LASP, University of Colorado Boulder
S2.4. The role of polar vortex in Sun-Earth coupling via the descent of EPP-produced NOx.
Rich Collins (Invited), Univ. of Alaska Fairbanks
S2.5. Mesosphere LIDAR measurements and trends in the polar regions
Jae Lee, UMBC and GSFC
S2.6. Dynamical Impact of the Southern Annular Mode on the stratospheric temperature and ozone hole
Pascal Buri, University of Alaska Fairbanks
S2.7. Land Surface Modeling Informed by Earth Observation Data: Towards Understanding Blue-Green-White Water Fluxes in High Mountain Asia
Lunch Buffet – Chicken Teriyaki
Ralph Kahn (Keynote), LASP, University of Colorado Boulder and NASA GSFC
S4.1. Volcanic Solar-Radiation (Mis)Management – The Historical Record
Jessica Larsen (Invited), Univ. of Alaska Fairbanks
S4.2. Patterns and Trends for Alaskan Volcanic Eruptions
Irina Panyushkina, (1) Laboratory of Tree-Ring Research, University of Arizona, USA (2) Earth Systems Research Center, University of New Hampshire, USA
S4.3. Tree rings as proxy of Arctic hydrology interactions
Break
R.J. Graham (Keynote), University of Chicago
S4.4. Resilience of Neoproterozoic Earth to Snowball Glaciation by CO2 Drawdown
Yang Wang (Invited), Florida State University, Tallahassee
S4.5. Tropical cyclone activity over the last millennia tempered by solar and climatic variability
Break
Poster Session / Reception
Wedgewood Conference Center – Garden Room
Chair: Odele Coddington, Tom Woods
There are 30 posters to view and discuss during the poster session along with drinks and light refreshments. The poster presentations are listed at the end of this schedule.
Thursday, September 18
Wedgewood Resort - Lobby
Overnight Aurora Borealis Outing
MEET IN LOBBY TO DRIVE TO THE DESIGNATED LOCATION
NO GROUP BREAKFAST SERVED – LATE START AT 1:00 pm
PERMAFROST TOUR – SESSION 1 MEET IN LOBBY – DEPART NO LATER THAN 8:20!
PERMAFROST TOUR – SESSION 1
PERMAFROST TOUR – SESSION 2 MEET IN LOBBY – DEPART NO LATER THAN 9:50!
PERMAFROST TOUR – SESSION 2
LUNCH ON YOUR OWN
Thursday, September 18
Wedgewood Conference Center – Borealis Ballroom/Board Room
Matt Deland (Invited), Science Systems and Applications, Inc, (SSAI)
S2.8. Polar Mesospheric Clouds: Hemispheric Differences and Long-Term Behavior
Susan Breon, NASA Goddard Space Flight Center
S5.1. TSIS-2 Preparing for Launch
Yolanda Shea (Invited), NASA LaRC
S5.2. CLARREO Pathfinder: A Key Component of the Space-based Climate Observing System
Vladimir Romanovsky (Keynote), University of Alaska Fairbanks
S5.3. State and Fate of Permafrost in the Warming Arctic
Peter Pilewskie (Invited), LASP, University of Colorado Boulder
S5.4 Libera’s Contributions to Earth Radiation Budget Continuity
Break
Jake Gristey (Invited), CIRES, University of Colorado Boulder
S5.5. Monitoring Earth’s Spectral Reflected Solar Radiation to Reveal Properties and Processes that Control Albedo
Cameron Straatsma (Invited), LASP, University of Colorado Boulder
S5.6. BABAR-ERI and SABAR – Innovative Instrumentation for Imaging Earth’s Broadband Radiation at Hight Spatial Resolution and Low Uncertainty
Shah Bahauddin, LASP, University of Colorado Boulder
S5.7. SMART: Solar Irradiance science team’s ML-Automated Retrieval of TSI
Serena Criscuoli, National Solar Observatory
S5.8. Validating solar atmosphere models with IAG spectra: the case of Balmer lines
Tom Woods, LASP, University of Colorado Boulder
Meeting Wrap-up / Summary
Friday, September 19
Topic 1: What are the best solar variability proxies and techniques to extend solar irradiance composites and models prior to satellite measurements?
Organizer: Tom Woods
BREAK
Topic 2: What are the solar irradiance continuity plans and options after the TSIS-2 mission?
Organizer: Erik Richard, Odele Coddington
Wednesday, September 17, 5:30 – 7:30 pm
Please limit poster size to no larger than 48”x48”
Organized by Session Themes:
- Debi Choudhary, California State University Northridge
Variability of Solar Chromospheric Spectral Lines and the Magnetic Field - Angela Cookson, San Fernando Observatory, California State University Northridge
Investigating solar irradiance variability from space-based Solar Dynamics Observatory images - Adriana Valio, Center for Radio Astronomy and Astrophysics Mackenzie, Mackenzie Presbyterian University, Sãu Paulo, Brazil
Submillimeter Solar Radius as a Proxy for Solar Irradiance: Implications for Earth’s Climate Variability - Matt DeLand and Sergey Marchenko, Science Systems and Applications, Inc, (SSAI)
Solar Spectral Irradiance Variability – Cycles 24, 25 and Beyond - Steven Penton, LASP, University of Colorado Boulder
GHOTI: GOES High-Cadence Operational Total Irradiance 2025 Status Update - Steven Penton, LASP, University of Colorado Boulder
New TSIS-1 SIM Data Product for the Solar Mg Index - Courtney Peck and Steve Penton, LASP, University of Colorado Boulder
Preparation for TSIS-2 Commissioning and Science Data Processing - Courtney Peck, LASP, University of Colorado Boulder
A New Method to Model Diode Degradation for TSIS-1 SIM - Courtney Peck and Shah Bahauddin, LASP, University of Colorado Boulder
SuryaFM: An AI Foundation Model for Data-Driven Solar Irradiance Modeling - Jenny Marcela Rodriguez Gomez, Catholic Univ. of America, NASA GSFC
Solar Spectral Irradiance (SSI) from the COronal DEnsity and Temperature (CODET) model version 1.1: predictions and applications to study planetary atmospheres - Tom Eden, LASP, University of Colorado Boulder
Degradation Correction Method for GOES-R Series EXIS EUVS-C Signals - Tom Eden, LASP, University of Colorado Boulder
Additional Corrections for the TSIS-1 SIM Data Processing - Hunter Leise (virtual), LASP, University of Colorado Boulder
LASP Interactive Solar Irradiance Datacenter (LISIRD) - Caitlin Kessler, LASP, University of Colorado Boulder
TSIS-1 SIM Extended and Long Integration Scan Activities - Lizzie McMaster, LASP, University of Colorado Boulder
Improved TSIS-1 SIM Measurement Precisions for Version 13 - Ke Yuxuan, Dept. of Statistics, University of Michigan
A Novel Approach to Solar Spectral Irradiance Missing Data Imputation with Uncertainty Quantification - Robert Weber
Arctic Sea Ice Responds to Ocean Warming/Cooling Dependent on Solar Activity Above/Below Threshold - Francesco Berrilli, Dipartimento di Fisica, Universitá degli Studi di Roma Tor Vergata, Rome
SEE: a CubeSat to Study Solar Activity and Space Weather - Tom Patton, LASP, University of Colorado Boulder
The ESCAPE Mission: Exploring the Stellar Drivers of Exoplanet Habitability - Ishay Haykeen
Automated Sunspot and Faculae Segmentation for Total Solar Irradiance Prediction using Attention U-Net - Ranjikhumar Solanki
Hourly PM 2.5 and PM10 Matter Concentrations Prediction in Pune, India, Using AERONET Aerosol Optical Depth (AOD) and Meteorological Data - R. Kariyappa, Indian Institute of Astrophysics
Solar EUV, UV & X-ray Irradiance Variability and Their Impacts on Earth’s Climate and Space Weather - Binod Adhikari, Nepal Academy of Science and Technology
Investigating the Eastward Electric Field Penetration in Relation to Solar Activity Indices during Solar Storms. - Nouhaila Bouhadi, Chouaïb Doukkali University, El Jadida
Hybrid Optimization for Space Weather Parameterization: Exploring Solar Influences on Climate Variability - MS Midhun, Astrophile-India-Kerala
Understanding Earth’s climate system & how it responds to different factors, including volcanic eruptions, solar radiation, ocean circulation, and human activity.
- Debi Choudhary, California State University Northridge
