Bulletin of the American Physical Society
2024 APS April Meeting
Wednesday–Saturday, April 3–6, 2024; Sacramento & Virtual
Session E00: Poster Session I & Welcome Reception (5:30PM - 7:30PM PT)
5:30 PM,
Wednesday, April 3, 2024
SAFE Credit Union Convention Center
Room: Exhibit Hall A, Floor 1
Sponsoring
Unit:
APS
Abstract: E00.00090 : 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)
This study utilizes data from the Gravity field and steady-state Ocean Explorer (GOCE). 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 experience variations based on altitude, latitude, longitude, solar flux, geomagnetic conditions, seasons, and local time. In particular, they generally fall off exponentially with altitude, with scale heights varying from 25 to 75 km. Therefore, in order to investigate other variations, normalization of the densities to a reference altitude is necessary for the GOCE dataset, due to the significant height variations even within the same orbit. In this work, we normalize the observed densities to a reference altitude for both dawn and dusk in order to investigate their variability due to other factors.
*Utah Academy of Sciences, Arts & Letters Undergraduate Research Pilot Program 2023
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