On the Abnormally Strong Westward Phase of the Mesospheric Semiannual Oscillation at Low Latitudes During March Equinox 2023 by Jose Suclupe, Jorge L. Chau, J. Federico Conte, Nicholas M. Pedatella, Rolando Garcia, Kaoru Sato, Christoph Zülicke, Lourivaldo M. Lima, Guozhu Li, S. Vijaya Bhaskara Rao, M. Venkat Ratnam, Rodolfo Rodriguez, Danny Scipion

“…Abstract Different meteor radars at low latitudes observed abnormally strong westward mesospheric winds around the March Equinox of 2023, that is, during the first phase of the Mesospheric Semiannual Oscillation. …”
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Longitudinal Structure in the Altitude of the Sporadic E Observed by COSMIC in Low-Latitudes by Zhendi Liu, Qingfeng Li, Hanxian Fang, Ze Gao

“…The WN4 occurs primarily during the daytime at the June solstice and equinoxes, with the largest amplitude at the September equinox and the smallest one at the March equinox. It moves eastward with a speed of ~90°/day. …”
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Diurnal and seasonal variations of the occurrence of ionospheric irregularities over Nigeria from GNSS data by Ojochenemi Ikani, Ojochenemi Ikani, Francisca Nneka Okeke, Kingsley Chukwudi Okpala, Daniel Okoh, Daniel Okoh, Babatunde Rabiu, Babatunde Rabiu

“…The strength of irregularities was generally greater in March equinox compared to September equinox, and they were more pronounced during pre-midnight hours. …”
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Upper mantle conductivity determined from the solar quiet day ionospheric currents in the dip equatorial latitudes of West Africa by Obiekezie, T., Okeke, F.

“…The seasonal variation in the external current maximizes during the March equinox and minimizes in the December solstice. …”
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The First Measurement of Seasonal Trends in the Equatorial Ionospheric Anomaly Trough at the CHUK GNSS Site During the Solar Maximum in 2014 by Jong-Kyun Chung, Sung-Moon Yoo, Wookyoung Lee

“…The equinoctial asymmetry at the March equinox was higher than that at the October equinox rather than the November equinox. …”
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Variation of Heliostat Wind Loads in a Radial Field Array Model by Matthew Marano, Matthew Emes, Azadeh Jafari, Maziar Arjomandi

“…Angle calculations for beam reflection were made for the 21st March (equinox). Results show mean and peak drag force coefficients reduce with distance into the field for a 1700 hour case due to high upstream blockage. …”
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Universal Time variations in the magnetosphere by Mike Lockwood, Stephen E. Milan

“…However, although the variation with Universal Time is consistent with the R-M effect for the September equinox, it is not for the March equinox. We here solve this long-standing puzzle by investigating the effects of the motions of the two poles in a frame fixed with respect to both the Earth and the Sun for an eccentric dipole model. …”
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