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.

A Rare Transit of Venus

Graphic image of individual frames from the movie showing Venus' transit

A coronagraph instrument at the Mauna Loa Solar Observatory on Hawai’i is used by a team of two scientists to record the rare transit of Venus across the Sun's corona.

Responses of the Thermosphere and Ionosphere System to Concurrent Solar Flares and Geomagnetic Storms

Graphic depicting simulated vertical E x B drift velocity
Wednesday, July 1, 2020

We conducted numerical simulations to examine dayside thermosphere and ionosphere responses to concurrent solar flares and a geomagnetic storm during September 6th – September 11th, 2017, as well as the interplay of flare and storm effects.

On the Cores of Resonance Lines Formed in the Sun's Chromosphere

Graphic image depicting a comparison of 1D and 3D calculations
Wednesday, July 1, 2020

We re-examine a 50+ year-old problem of deep central reversals predicted for strong solar spectral lines, in contrast to the smaller reversals seen in observations.

Pauline Dredger

Pauline Dredger is currently conducting research in the High Altitude Observatory at NCAR. She is a graduate student in the Department of Physics at University of Texas at Arlington.

Bhishek Manek

Bhishek Manek is a visiting scientist in the High Altitude Observatory (HAO) at the National Center for Atmospheric Research (NCAR). Bhishek is from the Applied Mathematics department at the University of California Santa Cruz (UCSC), where he is a Ph.D. candidate under the supervision of Prof.

Neutral hydrogen, helium and solar and stellar coronae

Graphic image of Line Profiles of He I and He II Resonance Line
Wednesday, June 17, 2020

In the context of the solar atmosphere, we re-examine the role of of neutral and ionized species in dissipating the ordered energy of intermediate-mode MHD waves into heat.

Preliminary Evidence of Madden-Julian Oscillation Effects on Ultra-Fast Tropical Waves in the Thermosphere

Graphic image of altitude (50-260 km) versus MJO phase depiction
Wednesday, June 10, 2020

Over the past two decades mounting evidence demonstrated that terrestrial weather significantly influences the dynamics and mean state of the thermosphere.

Physics Of MHD Rossby Waves In The Sun

Graphic image of the physics Of MHD Rossby Waves In The Sun
Wednesday, June 10, 2020

Evidence of the existence of hydrodynamic and MHD Rossby waves in the Sun is accumulating rapidly.

Tingting Yu

Tingting Yu is a scientific visitor in the High Altitude Observatory of the National Center for Atmospheric Research hosted by Dr. Wenbin Wang. She is a Ph.D. student in the Institute of Geology and Geophysics, Chinese Academy of Sciences.


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