F18 SSULI Measurements of Airglow Emissions Over 2 Years (IMAGE)
Caption
Says Andrew Nicholas, principal investigator, "What we're looking at is naturally occurring air glow emissions from the upper atmosphere." Shown is the daily averaged electron density over two years; as a function of altitude and day of the year in the post-sunset, equatorial ionosphere. F18 SSULI measured the nightside oxygen 135.6 nm radiative recombination emission intensity, capturing the ionosphere's variations daily and over the long-term as associated with seasons and solar cycles.
Credit
US Naval Research Laboratory
Usage Restrictions
None
License
Licensed content