Skip to main content

Main navigation

NCAR Logo

High Altitude Observatory

HAO
Contact Us
  • Home
  • About
    • HAO News
    • History of HAO
    • People
    • Visitor Program
    • Partnerships
    • Organizational Chart
    • Strategic Plan
    • External Advisory Committees
    • Internal Advisory Committees
    • Information for Staff/Visitors
    • Computer Support
  • Research
    • Research Highlights
    • Science Topics
    • Strategic Working Groups
  • Modeling
    • Assimilative Mapping of Ionospheric Electrodynamics (AMIE)
    • Coupled Magnetosphere Ionosphere Thermosphere Model (CMIT)
    • Data-Optimized Coronal Field Model (DOCFM)
    • FORWARD
    • The GLobal airglOW Model (GLOW)
    • Global Scale Wave Model (GSWM)
    • Lyon-Fedder-Mobarry (LFM) code
    • MURaM Sunspot Model Output
    • TIEGCM
    • WACCM-X
    • Living With A Star Focus Team
  • Observation
    • Community Spectro-polarimetric Analysis Center
    • COSMO
    • Fabry-Perot Interferometers
    • HAO Eclipses
    • Mauna Loa Solar Observatory
    • McIntosh Synoptic Map Archive
    • NCAR Vacuum Tunnel Facility
    • Solar Maximum Mission
    • The Sun Today
    • WindCube
    • LFDI
  • Education
    • The Sun: A Pictorial Introduction
    • Questions and Answers About the Sun
    • Solar Physics Historical Timeline
    • Famous Solar-Stellar Scientists
    • Solar Astronomy in the Prehistoric Southwest
    • Suggested Reading
    • Additional Educational Resources
  • News & Events
    • News
    • All Upcoming Events
    • Past Events
Contact Us

Observing and Modeling the Sun-Earth System

What We Do

Upcoming Events

Colloquium: Development of WACCM with the non-hydrostatic MPAS-A Dynamical core - Jan 17, 2024
Colloquium: Development and Applications of Data Assimilation for Whole Atmosphere Models - Feb 7, 2024 to Feb 9, 2024
Colloquium: Exploring Solar Coronal Polarization with P-CORONA: Forward Modeling and Applications - Feb 14, 2024

Latest News

Spiro pumpkin graphic

Annoucing SpiroFest!

Dec 5, 2023

HAO is celebrating Spiro Antiochos, a pioneer in solar physics whom developed transformative theories that have led to many breakthroughs in fundamental processes in the solar atmosphere. This event will convene from Thursday, February 29 to Friday, March 1, 2024 at our CG1 auditorium. Even if you don't know Spiro, there will be lots of great presentations on important solar physics topics and opportunities to interact with external scientists and students.

HAO team at National Society of Black Physicists meeting, Knoxville, TN, 2023

NCAR/HAO hosts booth at National Society of Black Physicists meeting

Nov 10, 2023

HAO hosted a booth at the 2023 National Society for Black Physicists meeting in Knoxville, TN. This was a great opportunity for students Marcel Corchado-Albelo and Chandler Jenkins and postdoc Kinfe Teweldebirhan Gebreegzabihar to reach out to the community on behalf of HAO and NCAR. We are grateful for the tremendous support we got from NASA PUNCH Outreach who provided a kit of their engaging tabletop activities (along with a helpful training!).  

Cool effect when trying to capture the eclipse through the telescope.

Annular Eclipse Expedition at Hovenweep

Nov 3, 2023

On 14 October 2023, a captivating annular eclipse graced the skies from Oregon to Texas in the U.S. It was a privilege to not only witness this celestial spectacle but also engage with a curious audience that included a team of solar physicists from both the High Altitude Observatory at NCAR and the National Solar Observatory. Visiting students and/or voluntary collaborators were also among the spectators.

More News >>

Latest Research Highlights

Field lines crossing Alfvén surface

Mapping the Sun’s Alfvén Surface with PUNCH

Dec 5, 2023

Steven Cranmer, Rohit Chhiber, Chris Gilly, Iver Cairns, Robin Colaninno, David McComas, Nour Raouafi, Arcadi Usmanov, Sarah Gibson, Craig DeForest review the properties of Alfvén surface and discuss its importance in models of solar wind acceleration, angular momentum transport, MHD waves and turbulence, and the geometry of closed coronal loops. Simulations results and data analysis techniques are used to determine the location of the Alfvén surface.

Evolution of the magnetic fields (left) and helicity density (right) for AR 12673

Deciphering Pre-solar-storm Features Of September-2017 Storm From Global And Local Dynamics

Nov 30, 2023

B. Raphaldini, M. Dikpati, A. A. Norton, A. S. W. Teruya, S. W. McIntosh, C. B. Prior, and D. MacTaggart investigate how global toroid patterns and local magnetic field topology of solar active region AR12673 together can hindcast occurrence of the biggest X-flare of cycle 24. We infer that minimum-phase storms can be forecast only hours ahead, while flare-prone active regions in peak-phase can be anticipated at least a month ahead from global toroid patterns.

Rempel model image of Sunspots, publication highlighted by NOVA

Comprehensive Radiative MHD Simulations of Eruptive Flares above Collisional Polarity Inversion Lines

Oct 31, 2023

Matthias Rempel, Georgios Chintzoglou, Mark C. M. Cheung, Yuhong Fan, and Lucia Kleint—Solar flares are bursts of high-energy radiation that are associated with sunspots. NOVA highlights this newly published research that uses models to study what happens when sunspots collide and under what conditions these collisions cause solar flares.

More Highlights >>

NCAR

  • NCAR Homepage
  • ACOM | Atmospheric Chemistry Observations & Modeling
  • CGD | Climate & Global Dynamics
  • CISL | Computational & Information Systems
  • EdEC | Education, Engagement & Early-Career Development
  • EOL | Earth Observing Laboratory
  • HAO | High Altitude Observatory
  • MMM | Mesoscale & Microscale Meteorology
  • RAL | Research Applications Laboratory

UCAR

  • UCAR Homepage
  • Community Programs
  • Diversity & Inclusion
  • Education & Training
  • For Staff
  • Government Relations & External Engagement
  • Member Institutions
  • Tech Transfer & Engagement
  • University Collaboration

Subscribe to NCAR|UCAR News

Follow NCAR|UCAR

© 2023 UCAR

  • Privacy
  • Cookies
  • Terms of Use
  • Copyright Issues
  • Sponsored by NSF
  • Report Ethics Concern
  • Staff Login
Postal Address: P.O. Box 3000, Boulder, CO 80307-3000 • Shipping Address: 3090 Center Green Drive, Boulder, CO 80301
NSF Logo

This material is based upon work supported by the National Center for Atmospheric Research, a major facility sponsored by the National Science Foundation and managed by the University Corporation for Atmospheric Research. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.