Modeling the development of an equatorial plasma bubble during a midnight temperature maximum with SAMI3/WACCM-X
We report results from a self-consistent global simulation model in which a large-scale equatorial plasma bubble (EPB) forms during a midnight temperature maximum (MTM). The global model comprises the ionospheric code SAMI3 and the atmosphere/thermosphere code WACCM-X. We consider solar minimum conditions for the month of August. We show that an EPB forms during an MTM in the Pacific sector and is caused by equatorward neutral wind flows. Although this is consistent with the theoretical result that a meridional neutral wind (V) with a negative gradient ( partial differential V/ partial differential theta; 0) is a destabilizing influence [Huba Krall, 2013, ] (where a northward meridional neutral wind V is positive and theta; is the latitude and increases in the northward direction), we find that the primary cause of the EPB is the large decrease in the Pedersen conductance caused by the equatorward winds.
document
https://n2t.org/ark:/85065/d7rb78nw
eng
geoscientificInformation
Text
publication
2016-01-01T00:00:00Z
publication
2023-08-16T00:00:00Z
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
None
OpenSky Support
UCAR/NCAR - Library
PO Box 3000
Boulder
80307-3000
name: homepage
pointOfContact
OpenSky Support
UCAR/NCAR - Library
PO Box 3000
Boulder
80307-3000
name: homepage
pointOfContact
2025-07-11T15:15:25.103994