HAO Research Highlights

Colorful sphere-shaped comparison between TIE-GCM and GOLD
May 5, 2022

Numerical simulations using the National Center for Atmospheric Research (NCAR) thermosphere-ionosphere-electrodynamics general circulation model (TIE-GCM) are performed to elucidate the effects of the interplanetary magnetic field (IMF) on the middle thermosphere composition during a “geomagneti

Lagrangian coherent structures (LCSs) are indicating regions of material transport
May 5, 2022

Lagrangian coherent structures (LCSs), indicating regions of material transport, are derived from models of the lower thermosphere for five space shuttle water vapor plume events.

Colorful swirling magnetic field lines
March 29, 2022

It has been a prevailing picture that active regions on the solar surface originate from a strong toroidal magnetic field stored in the overshoot region at the base of the solar convection zone, generated by a deep seated solar dynamo mechanism.

Multiple circular diagrams comparing aligned dipole with IGRG
March 29, 2022

There are significant differences between the Earth’s two hemispheres such as the Earth's magnetic field and the intensity of solar radiation due to Earth's tilt of the rotation axis with respect to the Sun.

Colorful multiple grids of simulation experiments
March 1, 2022

The upward plasma drift and equatorial ionization anomaly (EIA) in the Earth's ionosphere are strongly influenced by the zonal electric field, which is generated by the wind dynamo.