09:30 〜 09:45
[PEM11-03] High Resolution Ionosphere/Thermosphere Modeling Studies of Equatorial Plasma Bubbles
★Invited Papers
キーワード：equatorial bubbles, ionosphere/thermosphere modeling
We report results from a high resolution global simulation study of the ionosphere/thermosphere system that self-consistently generates large-scale equatorial spread F (ESF) plasma bubbles. The coupled model comprises the ionospheric code SAMI3 and the atmosphere/thermosphere codes WACCM-X and HIAMCM. An important feature of the study is that a high resolution grid is used globally with scale sizes 50 km. Several cases are studied for different seasons and solar activity. We show one case that is consistent with recent GOLD observations [Huba and Liu, 2020]. In addition to seasonal and solar activity variations in the onset of ESF, we also find a strong longitudinal and day-to-day variation. Importantly, the bubbles are initiated self-consistently by atmospheric gravity waves in the WACCM-X and HIAMCM models as opposed to artificial, numerical ionosphere perturbations.
Huba, J.D. and H.-L. Liu, Global modeling of equatorial spread F with SAMI3/WACCM-X, Geophys. Res. Lett., 47, e2020GL088258. https://doi.org/10.1029/2020GL088258 2020.
Huba, J.D. and H.-L. Liu, Global modeling of equatorial spread F with SAMI3/WACCM-X, Geophys. Res. Lett., 47, e2020GL088258. https://doi.org/10.1029/2020GL088258 2020.