![Two plots showing percent changes in TIME-GCM zonally averaged [O+] and [H+] as a function of latitude and altitude in the Northern Hemisphere between the “disturbed” and “pre-disturbance” time periods in 2012–2013](https://i0.wp.com/newspack-dev.eos.org/wp-content/uploads/2020/12/2020JA028331-Figure-12-top-row-with-legend-sized-for-Eos.png?resize=820%2C615&ssl=1)
Sudden stratospheric warmings in the high latitude wintertime can drive changes in light species (H, He and O) all the way though the thermosphere, likely influencing ion densities in the exosphere.
Exosphere
Posted inResearch Spotlights
Tracing the Path of Gas Atoms from Earth to the Final Frontier
Scientists capture the first complete image of Earth’s luminous geocorona and prove its ecliptic north–south symmetry.
Posted inResearch Spotlights
How Geomagnetic Storms Light Up the Geocorona
After geomagnetic storms, Earth’s corona abruptly increases in hydrogen density. For the first time, serendipitous observations have allowed researchers to investigate why.