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About the Mauna Loa Solar Observatory

The Mauna Loa Solar Observatory (MLSO) occupies part of the NOAA Mauna Loa research site located on the flank of Mauna Loa at an elevation of 3440 meters on the island of Hawaii. It is operated by the High Altitude Observatory, a division of the National Center for Atmospheric Research, which is located in Boulder, Colorado.

3rd Eddy Cross Disciplinary Symposium 2022

Jack Eddy with gray hair, smiling

Sun, Earth, Planet, Space, Atmosphere and Ocean–As our planet becomes one among many thousands of known worlds, our needs to understand how Earth’s space and climate react to our variable star grow in urgency.

Carolyn Jean Spellmann Shoemaker (1929–2021)

Carolyn Jean Spellmann Shoemaker (June 24, 1929–August 13, 2021) was a well known female astronomer. She was a co-discoverer of the Comet Shoemaker–Levy 9 and was credited with identifying 39 comets during her life time a number greater than any other individual at that time.

MHD-Test Particles Simulations of Moderate CME and CIR-Driven Geomagnetic Storms at Solar Minimum

Simulations
Thursday, December 2, 2021

Outer zone radiation belt electron flux is highly variable and responds differently to different solar wind drivers.

Charlotte Moore Sitterly (1898–1990)

Charlotte Moore Sitterly (24 Sep 1898–3 Mar 1990) was an American born astronomer known for her substantial spectroscopic research of the sun and chemical elements. Her data tables, known for their reliability, are still relevant today and referenced regularly.

Natalia Nikolayevna Stepanian (1931–2018)

Natalia Nikolayevna Stepanian lived until age 87 and was the oldest researcher at the Crimean Astrophysical Observatory (CrAO) when she died following a long illness.

Control of ionospheric plasma velocities by thermospheric winds

A three-dimensional diagram ICON observations Indicating In-situ Ion Drift
Friday, October 22, 2021

Earth’s equatorial ionosphere exhibits significant and unpredictable day-to-day variations in density and morphology. This presents difficulties in preparing for adverse impacts on technological systems even 24 hours in advance.

AAS Nova Features a Recent Publication by Philip Judge

Six examples displaying corrugated surfaces at which the centers of UV lines are formed

Understanding the magnitude and occurrence of solar storms is key to predicting events that can be harmful to thousands of Earth-orbiting satellites and the welfare of astronauts.

The enduring mystery of the solar corona

Magnetic field lines
Thursday, September 16, 2021

The author reviews why, after almost 8 decades, we still have a coronal heating problem.

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