| Autor: |
Richard Michael Tuminello, Scott L England, Martin M Sirk, Robert R. Meier, Andrew W. Stephan, Eric J Korpela, Thomas Immel, Stephen B Mende, Harald U. Frey |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Journal of geophysical research. Space physics, vol 127, iss 8 |
| Popis: |
Since the earliest space-based observations of Earth's atmosphere, ultraviolet (UV) airglow has proven a useful resource for remote sensing of the ionosphere and thermosphere. The NASA Ionospheric Connection Explorer (ICON) spacecraft, whose mission is to explore the connections between ionosphere and thermosphere utilizes UV airglow in the typical way: an extreme-UV (EUV) spectrometer uses dayglow between 54 and 88nm to measure the density of O+, and a far-UV spectrograph uses the O 135.6nm doublet and N2 Lyman-Birge-Hopfield band dayglow to measure the column ratio of O to N2 in the upper thermosphere. Two EUV emission features, O+ 61.6 and 83.4nm, are used for the O+ retrieval; however, many other features are captured along the EUV instrument's spectral dimension. In this study, we examine the other dayglow features observed by ICON EUV and demonstrate that it measures a nitrogen feature around 87.8nm which can be used to observe the neutral thermosphere. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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