Bulletin of the American Physical Society
Four Corners Section 2023 Meeting
Friday–Saturday, October 20–21, 2023; River Woods Conference Center, Logan, Utah
Session K01: Poster Session
4:06 PM,
Friday, October 20, 2023
Riverwoods Conference Center
Room: Grand Reception Hall
Abstract: K01.00031 : Longitudinal variability of thermospheric densities from satellite observations near dawn and dusk*
Presenter:
Agustina Peck
(Utah State University)
Authors:
Agustina Peck
(Utah State University)
Ivana M Molina
(Utah State University)
Ludger Scherliess
(Utah State University)
Data from the Gravity field and steady-state Ocean Explorer (GOCE) mission are used in this study. The mission provided dawn and dusk neutral densities between about 220 km to 270 km of altitude, with variations in the height of the satellite within one orbit of about 20 km. Thermospheric neutral densities vary with latitude, longitude, solar flux, geomagnetic conditions, seasons and local time. They generally fall off exponentially with altitude, with scale heights varying from 25 to 75 km. Therefore, in order to study other variations, normalization of the densities to a reference altitude is necessary for the GOCE dataset due to the large variations within the same orbit. In this work, we normalize the observed densities for both dawn and dusk in order to study their variability due to other factors.
*Utah Academy of Sciences, Arts & Letters Undergraduate Research Pilot Program 2023
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