1. Global wave structures in the thermosphere observed by TIMED/GUVI
Yongliang Zhang, Larry J. Paxton and Robert Schaefer
JHU/APL

2. Motivation: GOLD, ICON and TIMED carry FUV instruments
How can we help the community use TIMED/GUVI data to support the GOLD and ICON missions?

3. FUV observation of species: O, N2, O2, H, N, NO, O+
N 1200A

4. O 1304A
Lyman α
NO ɛ band
O 1356A
N-1493A
N-1743A
N2 LBH
GUVI dayside spectra on October 14, 2016,
Along track pixel 9

8. TAD?

9. Courtesy of Gang Lu

10. Lat=-60, lon=210 UT: km 852K (MSISE) GUVI: 830K lat=0, lon=120 UT=3. 160km: 753K (MSISE) GUVI: 710K lat=0, lon=225 UT: 20.5 GUVI T: 770K 160 km MSISE: 760K

11. MSISE: March 17, 2013, lat=0, lon=0, UT=12 (noon), T: at 160km 750K
GUVI T: 690K ( K around the lat=0, lon=0, average 740)

14. Summary
Model runs: LBH 145nm/141nm ratio quasi-linearly depends on N2 temperature around 160 km (peak emission altitude)
TIMED/GUVI FUV spectrograph data
Similar magnitudes of GUVI and MSISE T
Mid-low lat: large scale structures (GW? TAD?, regardless geomagnetic activity)
High-lat: T increase during storms
Equator: longitude structure is likely modulated by tides.
We are looking for model output or observational data that can help us confirm that this is a real effect.
Once confirmed this could become a useful tool for understanding the thermosphere.