Supplementary material

Figure S1: (a) Total electron density content (TEC) perturbations in GNSS at 21.258 UT on 20 October 2020. The perturbations were derived in accordance with Chou et al. (2023), but a Butterworth filter with 10–60-min cutoff period was applied in this paper. The perturbations were averaged over 0.47° × 0.625° bins to align with the grid of the SD-WACCM-X output. (b) The same as (a), but in SAMI3/SD-WACCM-X. The black dashed lines in (a) and (b) denote the crests of concentric waves. (c) Radar reflectivity in NEXRAD. The red box indicates convection in the cold front area; i.e., the high convective activity area.

Movie 1: Gravity wave meridional wind perturbations (m·s⁻¹) at 50 km (a), 100 km (b), 200 km (c), and 300 km (d) altitudes at 16.33 and 22.33 UT on 20 October in SD-WACCM-X.

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Movie 2: (a) Latitude-vertical cross-section of the GW meridional wind perturbation along 95 W from the surface to 300 km at 16.33–22.33 UT. (b, c) Same as (a) but for the southward and northward propagating GW perturbations, respectively.

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Movie 3: The color plots denote electron density perturbations in SAMI3/SD-WACCM-X (a) along 95 W at 16.33–22.33 UT on 20th October 2020. The red contours denote the meridional wind perturbations (m·s⁻¹) in SD-WACCM-X.

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Movie 4: Total electron density content (TEC) perturbations in GNSS at 16.33–22.33 on 20 October 2020. The perturbations were derived in accordance with Chou et al. (2023), but a Butterworth filter with 10–60-minute cutoff period was applied in this paper. The perturbations were averaged over bins to align with the grid of the SD-WACCM-X output. (b) The same as (a), but in SAMI3/SD-WACCM-X.

Download Video: Formats: mp4 (62.5 MB) | webm (1.4 MB) | ogg (44.0 MB) | Original mp4 (62.5 MB)

© M. Kogure et al., Published by EDP Sciences 2024