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Abstract Measurements from the Ionospheric Connections Explorer satellite (ICON) form the basis of direct numerical forecast simulations of plasma convective instability in the postsunset equatorialFregion ionosphere. ICON data are selected and used to initialize and force the simulations and then to test the results one orbit later when the satellite revisits the same longitude. Data from the IVM plasma density and drifts instrument and the MIGHTI red‐line thermospheric winds instrument are used to force the simulation. Data from IVM are also used to test for irregularities (electrically polarized plasma depletions). Fourteen datasets from late March 2022, were examined. The simulations correctly predicted the occurrence or non‐occurrence of irregularities 12 times while producing one false positive and one false negative. This demonstrates that the important telltales of instability are present in the ICON state variables and that the important mechanisms for irregularity formation are captured by the simulation code. Possible refinements to the forecast strategy are discussed. 

Abstract The 14‐panel Advanced Modular Incoherent Scatter Radar (AMISR‐14) system deployed at Jicamarca observed equatorial spread F plumes on two consecutive nights under unfavorable seasonal and solar flux conditions during a period that can be categorized as geomagnetically quiet. The AMISR‐14 capability of observing in multiple pointing directions allowed the characterization of the irregularity zonal drifts revealing that, in addition to their atypical occurrence, the zonal drifts of these plumes/irregularities also presented distinct patterns from one night to another, reversing from east to west on the second night. This work addresses two main subjects: (a) the mechanisms that may have led to the generation of these irregularities, despite the unfavorable conditions, and (b) the mechanisms that possibly led to the reversal (east‐to‐west) in the zonal plasma drift on the second night. To do so a multi‐instrumented and multi‐location investigation was performed. The results indicate the occurrence of simultaneous spread‐F events over the Peruvian and the Brazilian regions, evidencing a non‐local process favoring the development of the irregularities. The results also suggest that, even under very mild geomagnetic perturbation conditions, the recurring penetration of electric fields in the equatorial ionosphere can occur promptly, modifying the equatorial electrodynamics and providing favorable conditions for the plume development. Moreover, the results confirm that the eastward penetration electric fields, combined with the upsurge of Hall conductivity in the nighttime typically associated with the presence of sporadic‐E layers, are likely to be the mechanism leading to the reversal in the irregularity zonal drifts over these regions. 

Abstract BackgroundThough minoritized undergraduate engineering students earn less than 25% of engineering bachelor's degrees, minority‐serving institutions (MSIs) are leading the way in producing a large percentage of those underrepresented engineering bachelor's degree holders. However, much of the published research about the experiences of underrepresented engineering students occurs within the context of predominantly White institutions. Upon deeper inspection into the apparent success of some MSIs, graduation rates of specific minoritized populations (e.g., Black students) remain critically low. This suggests that there is more to be learned about how to better support Black engineering students' success. PurposeWe explored the experiences of Black undergraduate engineering students at a large public doctoral university with very high research activity. Design/MethodWe used interpretative phenomenological analysis to understand the experiences of eight participants. FindingsWe inductively developed two themes to describe how Black engineering students experience success at a Hispanic‐serving institution, which include building success networks and implementing rules of engagement. ConclusionParticipants enacted their cultural capital to construct their circles of success through the intentional engagement of others, resources, and themselves to realize success. This work sheds light on how Black students describe what it means to be successful in their engineering environment.