2023 Sun Climate Symposium – Agenda

2023 Sun Climate Symposium – Agenda

Solar and Stellar Variability and its Impacts on Earth and Exoplanets

October 16-20, 2023

Flagstaff, Arizona

(Preliminary as of September 19, 2023)

Monday, October 16

5:30 – 9:00pm

Welcoming Reception (Lowell Observatory)

Tuesday, October 17

7:00 – 8:00 am

Continental Breakfast

8:00 – 8:10 am

Tom Woods, LASP, University of Colorado, Boulder

8:10 – 8:35 am

Overview of NASA Sun-Climate Missions and Research Projects
Erik Richard, LASP, University of Colorado, Boulder

Session 1. Solar and Stellar Activity Cycles

Chair: Greg Kopp

8:35 – 9:10 am

Tom Ayres (Keynote), University of Colorado, CASA Cycles and the Seven Dwarfs

9:10 – 9:35 am

9:35 – 10:00 am

Chair: Joe Llama

10:00 – 10:25 am

Adam Kowalski (Invited), University of Colorado, LASP, NSO
Recent Advances in Electron Beam Transport and Implications for White-Light Flares

10:25 – 10:40 am

Debi Prasad Choudhary, Department of Physics and Astronomy, California State University Northridge
Sun-as-a-star spectral line variability using high resolution daily spectra

10:40 – 10:55 am

Garrett Zills, Augusta University, National Solar Observatory
Variability of Sun-as-a-star observations of Hα and Ca II 854.2 nm lines

10:55 – 11:10 am

11:10 – 11:25 am

Greg Kopp, CU/LASP, SSRC, SWRI, NRL Historical Solar-Irradiance Reconstructions Based on Advective Flux Transport Model Simulations and Latest Sunspot Records

11:25 – 11:50 am

Moira Jardine (Invited), University of St. Andrews
Twists and turns: Space weather around other Suns

11:50 – 1:00 pm

Lunch Buffet – High Country Conference Center
Chair: Joe Llama

1:00 – 1:15 pm

1:15 – 1:30 pm

Andrés Munoz-Jaramillo, Southwest Research Institute, National Solar Observatory, University of Colorado ‐ Boulder, Universidad Nacional de Colombia
Solar Dynamo Davaverse Update:  A repository of long-term Magnetic and Optical Data

1:30 – 1:45 pm

Dan Lubin, UCSD Scripps Institution of Oceanography and Department of Astronomy and Astrophysics
Hamilton Echelle Spectrograph Observations of Solar Analog Field Stars

Session 2. Impacts of Stellar Variability on Planetary Atmospheres

Chair: Tyler Ryburn

1:50 – 2:25 pm

2:25 – 2:50 pm

2:50– 3:05 pm

Vladimir Airapetian, NASA/GSFC & American University, NASA/LaRC & SSAI, NASA Ames, Yokohama National University, Japan, PSU,  Lockheed Martin RC, NAOJ, University of Colorado at Boulder Atmospheric Pre-biosignatures of Young Rocky Exoplanets Driven by Stellar Magnetic Activity:  Models versus Laboratory Experiments

3:05 – 3:35 pm


Chair: Tyler Ryburn

3:35 – 4:00 pm

Laura Amaral (Invited, Thomas Metcalf Lecturer), Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, School of Earth and Space Exploration, Arizona State University, NASA Virtual Planetary Laboratory Lead Team, Department of Astronomy, University of Washington,Center for Computational Astrophysics
XUV-Driven Atmospheric Mass Loss of M Dwarf Planets due to Flaring

4:00 – 4:25 pm

Ward Howard (Invited), University of Colorado, Boulder
Constraining Exoplanet Atmospheres with Multi-wavelength Flare Campaigns

4:25 – 4:40 pm

Yuta Notsu, CU Boulder / LASP / NSO, NAOJ, JAXA/ISAS, NASA/GSFC, American Univ., Univ. of Tokyo, National Defense Academy of Japan
XUV Spectra of Active Sun-like Stars and the Young Sun:  Scaling Relations based on the Long-term Sun-as-a-star datasets

4:40 – 4:55 pm

Nina-Elisabeth Nemec, University of Göttingen
Spectral profile of Short-Term Irradiance Variations of Solar-like Stars

Wednesday, October 18

7:00 – 8:00 am

Continental Breakfast

Session 3. Evidence of Centennial and Longer-term Variability in Climate Change

Chair: Jae Lee

8:00 – 8:35 am

8:35 – 9:00 am

Timothy Jull (Invited), Department of Geosciences, University of Arizona, Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Laboratory for Tree-Ring Research, University of Arizona, National Physical Laboratory, Siberian Federal University,  SBRAS Institute of Archaeology and Ethnography, School of Natural Resources, College of Wooster, Institute for Space-Earth Environmental Research, Nagoya University
Records of space weather found in 14C production rates in tree rings and connections to solar activity and solar flare events

9:00 – 9:25 am

Fusa Miyake (Invited), ISEE, Nagoya Univ., National Museum of Japanese History, ETH Zurich Investigation of extreme solar energetic particle events in the 19th century

9:25 – 9:40 am

Hisashi Hayakawa, Nagoya University / Rutherford Appleton Laboratory
Contrasts of the Maunder Minimum and the Dalton Minimum:  Archival Analyses

9:40 – 9:55 am

Dan Lubin, UCSD Scripps Institution of Oceanography
Response of the North Atlantic Oscillation in a Future Grand Minimum

9:55 – 10:20 am

Chair: Dan Lubin

10:20 – 10:45 am

Georg Feulner (Invited), Potsdam Institute for Climate Impact Research (PIK), Potsdam, Germany
Implications of long-term changes in solar luminosity on habitability and climate dynamics.

10:45 – 11:00 am

Bernhard Hofer, Max‐Planck‐Institut für Sonnensystemforschung, Justus‐von‐Liebig‐Weg 3, Göttingen, Germany, Georg‐August‐Universität Göttingen, Institute for Astrophysics, Göttingen, Germany
Reconstructing solar irradiance since 1700 from simulated magnetograms

11:00 – 11:15 am

Dewitte, Royal Observatory of Belgium (ROB) Centennial TSI variation:  a paradigm shift for Sun-Climate research.

11:15 – 11:40 am

Bibhuti Kumar Jha (Invited, Thomas Metcalf Lecturer), Southwest Research Institute, Boulder, CO; Aryabhatta Research Institute of Observational Sciences, Nainital, India; Max Planck Institute for Solar System Research, Göttingen, Germany
A Century of Solar Observations from Kodiakanal Solar Observatory:  New Insights from Ca K Data

11:40 – 11:55 am

11:55 – 12:10 pm

Irina Panyushkina, Laboratory for Tree-Ring Research, University of Arizona
Two in one:  climate and solar activity proxies from tree rings.

12:10 – 1:30 pm

Lunch Buffet – High Country Conference Center

1:30 – 4:00 pm

FREE TIME! On Your Own! Here are some suggestions for you and meeting place options for any group collaboration discussions:
  • Sample some of the great breweries or coffee shops in Flagstaff!
  • Go for a hike around the Snowbowl Ski Resort – it’s a great time for leaf peeping!
  • Check out Walnut Canyon National Monument!
  • Check out the art galleries, boutiques and outdoor outfitters in Downtown Flagstaff!
  • Take a walk around campus!

4:00 – 6:00 pm

Poster Session

Thursday, October 19

7:00 – 8:00 am

Continental Breakfast

Session 3. (cont.)

Chair: Peter Pilewskie

8:00 – 8:15 am

Serena Criscuoli, Università di Roma Tor Vergata, National Solar Observatory, Zurich University of Applied Sciences
A New Reconstruction of the Total Solar Irradiance During the Last Millennium

Session 4. Evidence of Short-term Variability in Climate Change

Chair: Peter Pilewskie

8:20 – 8:45 am

Bill Collins (Invited), Lawrence Berkeley National Laboratory, University of California, Berkeley
Evidence for hemispheric spectral albedo inequality.

8:45 –  9:00 am

Lon Hood, Lunar and Planetary Laboratory, University of Arizona, Tucson, Arizona
Arctic Sea Ice Loss, Long-Term Trends in Extratropical Wave Forcing, and the emergence of the QBO/Solar-MJO Connection

9:00 – 9:30 am

9:30 – 9:45 am

Joachim Raeder, Space Science Center, UNH
Solar Storm Effects on Local Weather

9:45 – 10:15 am


10:15 – 10:30 am

Abdanour Irbah, LATMOS/IPSL, UVSQ Université Paris‐Saclay, Sorbonne Université, Space Research Institute, Moscow, Russia
High-resolution solar spectrum in the 0.7-1.7μm domain obtained from TGO observations shows solar lines unreached from ground

10:30 – 10:55 am

10:55 – 11:20 am

Luiz Millan (Invited), Jet Propulsion Laboratory, California Institute of Technology
The Hunga-Tonga-Hunga-Ha’apai water vapor wandering within the atmosphere a 2-year journey.

11:20 –  11:35 am

Jae Lee, University of Maryland, Baltimore County, NASA Goddard Space Flight Center
The Absent Solar Cycle Response of the Polar Mesospheric Clouds.

11:35 – 2:00 pm

Lunch – on your own

Session 5. Trending of Solar Variability and Climate Change for Solar Cycle 25 (present and future)

Chair: Odelle Coddington

2:00 – 2:25 pm

Lisa Upton (Invited), Southwest Research Institute
The Solar Cycle 25 Prediction, Progress, and Prospects

2:25 – 2:40 pm

2:40 – 2:55 pm

Sergey Marchenko, Science Systems and Applications, Inc., Lanham, MD
Sun-as-a-Star spectral line variability in 300-2400nm range

2:55 – 3:20 pm

Angie Cookson (Invited), San Fernando Observatory, California State University Northridge
A short history of the San Fernando Observatory and its
Photometry Program

3:20 – 3:50 pm


Chair: Tom Woods

3:50 – 4:05 pm

4:05 – 4:30 pm

Don Wuebbles (Invited), University of Illinois Urbana-Champaign
Past and Projected Changes in the Earth’s Climate: The Science

4:30 – 4:45 pm

Margit Haberreiter, Physikalisch‐Meteorologisches Observatorium Davos and World Radiation Center, WSL, Schnee‐ und Lawinenforschung,  Laboratory for Atmospheric and Space Physics, University of Oslo and Norwegian Space Agency, UTIAS,  Statsat
Total Solar Irradiance as Measured with CLARA onboard NorSat-1- In Orbit Performance and Data Release

6:00 – 7:00 pm

Reception – 1899 Ballroom and Patio

7:00 – 9:00 pm

Science Dinner – 1899 Ballroom at High Country Conference Center
Chair: Tom Woods

Friday, October 20

7:00 – 8:00 am

Continental Breakfast
Chair: Erik Richard

8:00 – 8:15 am

Marty Snow, South African National Space Agency (SANSA), Laboratory for Atmospheric and Space Physics (LASP)
Validation of operational TSI using TSIS-1/SIM data

8:15– 8:30 am

Leah Ding, American University, Washington D.C., NASA Goddard Space Flight Center A Machine Learning Approach to Connecting TSI and HMI Observations

8:30 – 8:45 am

Tom Woods, LASP, University of Colorado
Next-generation Irradiance Proxies using TSIS-1 Data

8:45 – 9:00 am

9:00 – 9:15 am

Steve Penton, Laboratory for Atmospheric and Space Physics (LASP)
TSIS-1 SIM Updates on Science Processing

9:15 – 9:30 am

9:30 – 9:45 am

Peter Pilewskie, Laboratory for Atmospheric and Space Physics, University of Colorado Boulder; NASA Langley Research Center; NASA Jet Propulsion Laboratory
The Value of Spectrally Resolved Measurements in Understanding Earth’s Energy Flows

9:45 – 10:00 am

Susan Breon, NASA Goddard Space Flight Center, Goddard Earth Sciences Technology and Research, University of Maryland
TSIS-2 Mission Status

10:00 – 10:15 am

Meeting Wrap-Up / Summary

10:15 – 10:45 am

Peter Pilewskie and Tom Woods
LASP, University of Colorado – Boulder
Meeting Summary