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![BSD teaser imager](/sites/default/files/styles/large/public/2024-06/BSDTeaserImage_4.png?itok=XQs58uEn)
Announcing 2024 Boulder Solar Day
Boulder Solar Day is an informal 1-day meeting that brings together researchers from CU, HAO, LASP, NOAA, NSO, NWRA, and SwRI as well as out-of-town visitors to give an overview of solar research being accomplished at local institutes and to discuss current progress on solar instrumentation, observations, and models. Registration, agenda, and abstracts are not yet available.
![UCoMP image from April 9th, 2024.](/sites/default/files/styles/large/public/2024-05/20240409.ucomp_.1074.l2.waves_.median.enhanced_intensity.png?itok=PSjDXlme)
HAO flew observers to MLSO to observe the Sun during the solar eclipse
On April 8, 2024, the day of the total solar eclipse, HAO observers Ben Berkey (site manager) and Lisa Perez-Gonzalez flew by helicopter to the Mauna Loa Solar Observatory (MLSO) located at 11,200 feet on the north face of Mauna Loa to observe the Sun’s corona using the MLSO coronagraphs. They had to fly to the site since the road and power lines to Mauna Loa were destroyed by a volcanic eruption on Nov 27, 2022. A generator and battery packs supplied the observatory with the necessary power. Unfortunately, clouds prevented observations on April 8, but Ben and Lisa were able to return on April 9 to capture beautiful observations of the corona with both coronagraphs (see images in story).
![2024 Total Solar Eclipse Composite](/sites/default/files/styles/large/public/2024-04/Teaser2_composite_halpha-wl_fesun_team_low3.png?itok=9MvkQ_Vr)
Chasing the IR Corona through Solar Eclipse Experiments
The total solar eclipse on April 8, 2024, was a great opportunity for the team of HAO, NSO, and NOAA scientists and collaborators to travel to a location on the totality path with the goal of running unique science experiments. Using additional telescopes, binoculars, and outreach materials, we were able to capture the eclipse throughout its phases and share our passion with a very excited local crowd.
Latest Research Highlights
![pre-reversal enhancement during geomagnetic quiet time period](/sites/default/files/styles/large/public/2024-06/QianWu_model%20MAGE.jpeg?itok=7nB6FllK)
MAGE Model Simulation of the Pre-reversal Enhancement and Comparison with ICON and Jicamarca ISR Observations
Qian Wu, Wenbin Wang, Dong Lin,Liying Qian, Chaosong Huang, and Yongliang Zhang use the latest coupled geospace model MAGE (Multiscale Atmosphere-Geospace Environment) and observations from Jicamarca ISR and ICON IVM instrument, we examine the pre-reversal enhancement during geomagnetic quiet time period.
![Thermospheric wind observations from HIWIND](/sites/default/files/styles/large/public/2024-06/QianWu_HIWIND.png?itok=2axEqIXM)
HIWIND Balloon and Antarctica Jang Bogo FPI High Latitude Conjugate Thermospheric Wind Observations and Simulations
Qian Wu, Dong Lin, Wenbing Wang, Liying Qian, Geonhwa Jee, Changsup Lee, and Jeong-han Kim use balloon instrument in the northern hemisphere and ground based instrument in the southern hemisphere to study the conjugacy of the thermospheric winds of high latitudes.
![Intraseasonal variability regression patterns](/sites/default/files/styles/large/public/2024-05/Ralphaldini_ISVregressionPatterns.png?itok=iBEmvQ5R)
Tropical and Subtropical South American Intraseasonal Variability: A Normal-Mode Approach
André SW Teruya, Víctor C Mayta, Breno Raphaldini, Pedro L Silva Dias, and Camila R Sapucci use a normal-mode decomposition method to analyze South American intraseasonal variability (ISV). This demonstrated that a realistic circulation can be reproduced, giving a powerful tool for diagnosing and studying the dynamics of waves and the interactions between them in terms of their ability to provide causal accounts of the features seen in observations.