HAO

NCAR High Altitude Observatory

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.

NO transport via Lagrangian Coherent Structures into the top of the polar vortex

Daily average WACCMX+DART NO profiles
Tuesday, July 13, 2021

The energetic particle precipitation (EPP) indirect effect (IE) refers to the downward transport of reactive odd nitrogen (NOx=NO+NO2) produced by EPP (EPP-NOx) from the polar winter mesosphere and lower thermosphere to the stratosphere where it can destroy ozone.

COSMIC Observation of Stratospheric Gravity Wave and Ionospheric Scintillation Correlation

High S4 occurrence (> 0.2) longitudinal and annual variations from 2010 to 2013
Tuesday, July 13, 2021

A correlation study is performed to investigate possible connections between the stratospheric gravity waves and the ionospheric plasma bubble induced GPS signal scintillations.

Characteristics of small-scale gravity waves in the Arctic winter mesosphere

Histogram of small-scale GWs’ parameters observed by All-sky OH airglow imager at Resolute Bay Observatory
Tuesday, July 13, 2021

Observational datasets in the polar middle atmosphere are extremely valuable for understanding the polar dynamics and coupling between lower and middle atmosphere.

Gabriel Dima

Gabriel is an Advanced Study Program Postdoctoral Fellow working at the High Altitude Observatory. His interests are strongly rooted in gaining an improved understanding of the structure and dynamics of the solar corona.

2017 Total Eclipse Team

HAO members and collaborators convene at Casper Mountain, Wyoming to take advantage of the rare opportunity to observe and capture images of the sun's corona that is visible during totality, using specialized eclipse checking telescopes.

Dynamical Splitting Of A Spot-producing Magnetic Ring In A Nonlinear Shallow-water Model

Snapshots during splitting of a 6-degree toroidal ring into two
Wednesday, June 30, 2021

We explore the fundamental physics of narrow toroidal rings during their nonlinear magnetohydrodynamic evolution at tachocline depths. Using a shallow-water model, we simulate the nonlinear evolution of spot-producing toroidal rings of 6-degree latitudinal width and peak field of 15 kG.

Post-midnight O+ Depletions Observed by ICON: Data/Model Comparison

Data/Model Comparison
Wednesday, June 30, 2021

The NASA Ionosphere Connection explorer was launched in October 2019 with the goal of understanding the transition from Earth's atmosphere to space by measuring key quantities at low latitudes.

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