A comparison of thermospheric FUV radiance and composition from TIMED, GOLD and ICON
Abstract
Far Ultraviolet (FUV) imagers on a satellite are used to observe thermospheric and ionospheric parameters, such as density (O, N2, O2, O/N2, H), temperature (neutral and plasma) and auroral precipitation (characteristic energy and flux). The NASA TIMED, GOLD and ICON missions are now making concurrent observations, offering a unique opportunity to monitor the thermospheric variation in O/N2 more comprehensively than is possible individually. However, the FUV radiances and thermospheric products from the missions need to be inter-calibrated or inter-compared. At the time of the writing of this abstract, a preliminary comparison shows that the morphology of the radiances and composition (O/N2) are consistent between GOLD and TIMED/GUVI. But there are differences in their absolute values. The possible sources of the differences will be discussed. This intercomparison is an important and necessary step. By connecting GOLD and ICON measurements to TIMED/GUVI we can create a contiguous record of the behavior of the thermosphere.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMSA037..09Z
- Keywords:
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- 3369 Thermospheric dynamics;
- ATMOSPHERIC PROCESSES;
- 2411 Electric fields;
- IONOSPHERE;
- 7974 Solar effects;
- SPACE WEATHER