A solar eclipse is a rare astronomical event that occurs when the Sun, Moon, and Earth are aligned in a straight line with the moon in between the sun and earth occulting the Sun as well as its radiation by casting a shadow on different parts of the earth. Solar eclipse observation gives a unique opportunity to study the impact of solar radiation on the atmosphere-ionosphere coupled system. The effect of solar eclipses is noticed as a sudden decrease of ionospheric density due to the cutoff of solar ionizing radiation (Mitra et al., 1933). A combination of ground and space-based observations will give an idea about the ionospheric response to the topside and bottom side ionosphere during a solar eclipse. Past studies of the ionospheric response to solar eclipse showed the generation of atmospheric gravity waves in the earth's atmosphere during the eclipse period because of the passage of the Moon's shadow at a supersonic speed (Chimonas & Hines, 1970). Various experimental and modeling techniques have been performed to study the ionospheric response to solar eclipses in the past (Chernogor & Mylovanov, 2020). A Solar eclipse is known to produce changes in the earth's atmosphere and ionosphere. The most common changes are the decrease in electron density, decrease in ion and electron temperature, compositional changes in the ionosphere, plasma movement, and decrease in lower atmospheric temperature. Past solar eclipse studies showed the generation of Traveling Ionospheric Disturbances (TIDs) and gravity waves during solar eclipse using observations. Chimonas and Hines (1970) have reported for the first time the generation of atmospheric gravity waves during a solar eclipse. Many attempts have been done after this to see the observa-

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We found the signatures of the multiple prompt penetration electric fields and the disturbance dynamo electric field having impacts on the East Asian sector ionosphere along the meridional chain thoroughly from the equator, low‐mid to high latitudes during the space weather event of 3–5 November 2021. The observation is made on global positioning system‐total electron content (GPS‐TEC), digisonde, and magnetometer stations. In the main phase of the storm, intense modulations of vertical total electron content (VTEC) and critical frequency (foF2) are observed as coherently fluctuating with interplanetary electric field (IEF) and IMF Bz reorientations. It is diagnosed that the oscillations in the disturbance polar current 2 (DP2) current system directly penetrate meridianally from high to equatorial latitudes, leading to the significant changes in ionospheric electrodynamics that governs the density fluctuations. The wavelet spectra of VTEC, foF2, h’F (virtual height), H‐components and IEF give a result of common and dominant periodicity occurring at ∼1 hr. This result suggests that the wavelike oscillations of VTEC and foF2 and H component are associated with prompt penetration electric fields.

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