HAO Research Highlights

Global maps
August 1, 2018

It is commonly believed that solar eclipses have a great impact on the ionosphere-thermosphere (I-T) system within the eclipse shadow, but little attention has been paid to the global responses to them.

Butterfly-type plots of all of the McA data
July 26, 2018

The McIntosh Archive consists of a set of hand-drawn solar Carrington maps created by Patrick McIntosh from 1964 to 2009. McIntosh used mainly H, He-I 10830Å and photospheric magnetic measurements from both ground-based and NASA satellite observations.

Kawakami diagrams for the linear polarization of the Ca II 8542 A line
July 26, 2018

The weak field approximation is a conceptually simple and computationally light method for inferring the magnetic field strength and its orientation in the Sun’s atmosphere.

An overview of interesting vantage points, highlighting previous extra-Sun-Earth-line (extra-SEL) missions
July 26, 2018

We explore new opportunities for solar physics that could be realized by future missions providing sustained observations from vantage points away from the Sun-Earth line.

Change in WACCMX simulated total electron content (TEC) during a geomagnetic
June 18, 2018

Nicholas Pedatella notes that geomagnetic storms are an important driver of variability in Earth’s ionosphere, and can have significant societal impacts through the ionosphere’s impact on communications and navigation systems (e.g., GPS).