Earth's upper atmosphere | High Altitude Observatory

Equinoctial Asymmetry in the Upper Ionosphere: Comparison of Satellite Observations and Models

SAMI3 simulation results for electron denisity

The effects of IMF By on the middle thermosphere during a geomagnetically “quiet” period at solar minimum

The polar view of the percentage difference of simulated ∑O/N2 and GOLD observed ∑O/N2 between DOY 111 and 110 at 15:10 UT in 2019. The perimeter latitude is 30°N

The Molecular Oxygen Density Structure of the Lower Thermosphere as Seen by GOLD and Models

Comparisons of local time structure of molecular oxygen at 21°N, 170 km altitude

Impacts of Different Causes on the Inter–Hemispheric Asymmetry of Ionosphere–Thermosphere System at Mid– and High–Latitudes: GITM Simulations

Interhemispheric differences poleward of 40deg geog. latitude of E-region electron density

Impact of Thermospheric Wind Data Assimilation on Ionospheric Electrodynamics using a Coupled Whole Atmosphere Data Assimilation System

Longitude-latitude maps of NmF2 from the NR (first column) and the difference of NmF2 between OSSEs and NR (second to fourth columns) at six different times.

HAO affiliate scientist, Dr. Joe Huba, published in a popular-science journal

Joe Huba

Space Storms in the Upper Atmosphere and Ionosphere

Stan Solomon

HIWIND Prepares for a New Zealand Flight in 2022

HiWind instrument during final flight preparations in Kiruna, Sweden, June, 2011

Interhemispheric Coupling Mechanisms in the Middle Atmosphere of WACCM6

Differences in the monthly mean temperature from the long-term average over three WACCM realizations

Upper atmosphere radiance data assimilation: A feasibility study for GOLD far ultraviolet observations

Accuracy of temperature estimates in the measurement update step for four different assimilated observations

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