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.
We conduct observational and modeling studies of thermospheric composition responses to
weak geomagnetic activity (non-geomagnetic storms). We found that the thermospheric O
and N 2 column density ratio (∑O/N 2 ) in part of the Northern Hemisphere measured by
The National Aeronautics and Space Administration (NASA) Global‐scale Observations of the Limb and Disk (GOLD) has been imaging the thermosphere and ionosphere since October 2018. It provides continuous measurements over a large area from its geostationary orbit.
Magnetoseismology, a technique of magnetic field diagnostics based on observations of magnetohydrodynamic (MHD) waves, has been widely used to estimate the field strengths of oscillating structures in the solar corona.
An international team led by solar physicists from Peking University, China and National Center for Atmospheric Research (NCAR), USA, has recently measured the global magnetic field of the solar corona for the first time.
Deepak Karan is a visiting postdoc at HAO/NCAR. He pursued his Ph.D. work at Physical Research Laboratory, Ahmedabad, India and received a degree in Physics from Indian Institute of Technology Gandhinagar, India.
In this multi-instrument paper, we search for evidence of sustained magnetic reconnection far beyond the impulsive phase of the X8.2-class solar flare on 2017 September 10.
Dr. Joe Huba is a Senior Research Scientist at Syntek Technologies in Virginia and a long-standing Affiliate Scientist at HAO. In a Scientia article, he explores the complex process of vast plasma bubbles forming in the upper atmosphere and quickly ascending into space.
The low latitude ionosphere is one of the dynamic regions of the Earth’s upper atmosphere. The morphology of this region is controlled by radiative and coupled chemical, neutral and plasma transport processes.
The National Center for Atmospheric Research thermosphere-ionosphere-electrodynamics general circulation model (TIE-GCM) is used to conduct numerical experiments that isolate and elucidate a substantial modication of the quasi-6-day wave (Q6DW) above 110 km due to presence of the planetary wave (
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