HAO Research Highlights

NmF2 climatology for 2007 to 2010 in magnetic latitude bins image
November 2, 2012

Extensive analyses of COSMIC data for 2007–2010 have revealed a number of features concerning seasonal and solar-cycle variation. Low-latitude ionospheric peak density NmF2 was dominated by the semi-annual anomaly, the equatorial anomaly and the annual asymmetry.

Comparison of thermospheric neutral density at 400 km image
November 2, 2012

Changes in the thermosphere-ionosphere system caused by high-speed streams in the solar wind, and the co-rotating interaction regions they engender, were studied using a combination of CMIT and TIEGCM simulations and data analysis. 

The stand-off distance Rs image
November 2, 2012

The possible effects of geomagnetic-field changes over periods of millennia on solar wind/magnetosphere/ionosphere/thermosphere coupling was examined, by altering the strength of the geomagnetic dipole in the Coupled Magnetosphere-Ionosphere-Thermosphere (CMIT) model.

Observed field-aligned currents image
November 2, 2012

Geomagnetic field-aligned currents from the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE) satellite mission are used to drive the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM).

November 2, 2012

An analysis was done of the momentum budget of the diurnal westward-propagating wavenumber-1 (DW1) tide simulated by the Whole Atmosphere Community Climate Model (WACCM).

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