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Evaluation of TIEGCM based on GOCE neutral density
- Source :
- Frontiers in Physics, Vol 11 (2024)
- Publication Year :
- 2024
- Publisher :
- Frontiers Media S.A., 2024.
-
Abstract
- The Thermosphere Ionosphere Electrodynamic General Circulation Model (TIEGCM), as one of the most advanced physical models of the Earth’s thermosphere and ionosphere, is not only widely used in scientific research, but also has essential reference value in aerospace operations. In this study, we use Gravity field and steady-state Ocean Circulation Explorer (GOCE) neutral density to evaluate the accuracy of the TIEGCM. The assessment is performed on both time and spatial scales. The time scales are conducted annually, monthly, and daily, while the spatial scales are carried out in terms of altitude, latitude, and local time. On the time scales, the performance of the TIEGCM on the monthly time scale is better than that on the annual time scale. Also, the performance on the daily time scale is better than that on the monthly time scale. The relative deviation shows a significant seasonal variation, that is, larger in winter and summer and smaller in spring and autumn. In addition, the relative deviation shows a negative correlation with F10.7 and Ap. On the spatial scale, with the increase in altitude, the average relative deviation of the model becomes larger in general. The relative deviation is usually larger at middle latitudes in the Northern Hemisphere and high latitudes in the Southern Hemisphere. Finally, on the scale of local time, the relative deviation changes more dramatically in local morning than at dusk.
- Subjects :
- model accuracy
GOCE density
TIEGCM
thermosphere density
evaluation
Physics
QC1-999
Subjects
Details
- Language :
- English
- ISSN :
- 2296424X
- Volume :
- 11
- Database :
- Directory of Open Access Journals
- Journal :
- Frontiers in Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.f6b902c8e73a4736a62167a25647c506
- Document Type :
- article
- Full Text :
- https://doi.org/10.3389/fphy.2023.1334951