Browsing by Author "Aa, Ercha"

3-D Ionospheric Electron Density Variations during the 2017 Great American Solar Eclipse: A Revisit

Aa, Ercha; Zhang, Shun-Rong; Erickson, Philip J.; Wang, Wenbin; Coster, Anthea J. (Multidisciplinary Digital Publishing Institute, 2023-08-31)

This paper studies the three-dimensional (3-D) ionospheric electron density variation over the continental US and adjacent regions during the August 2017 Great American Solar Eclipse event, using Millstone Hill incoherent ...

Conjugate Ionospheric Perturbation During the 2017 Solar Eclipse

Zhang, Shun‐Rong; Erickson, Philip J.; Vierinen, Juha; Aa, Ercha; Rideout, William; e.a. (American Geophysical Union (AGU), 2021-01-16)

We report new findings of total electron content (TEC) perturbations in the southern hemisphere at conjugate locations to the northern eclipse on August 21, 2017. We identified a persistent conjugate TEC depletion by 10%–15% ...

Coordinated Ground‐Based and Space‐Based Observations of Equatorial Plasma Bubbles

Aa, Ercha; Zou, Shasha; Eastes, Richard; Karan, Deepak K.; Zhang, Shun‐Rong; e.a. (American Geophysical Union (AGU), 2020-01)

Coordinated Ground‐Based and Space‐Borne Observations of Ionospheric Response to the Annular Solar Eclipse on 26 December 2019

Aa, Ercha; Zhang, Shun‐Rong; Erickson, Philip J.; Goncharenko, Larisa P.; Coster, Anthea J.; e.a. (American Geophysical Union (AGU), 2020-10-26)

Electrified Postsunrise Ionospheric Perturbations at Millstone Hill

Zhang, Shun‐Rong; Erickson, Philip J.; Gasque, L. C.; Aa, Ercha; Rideout, William; e.a. (American Geophysical Union (AGU), 2021-09-12)

Impacts of the Sudden Stratospheric Warming on Equatorial Plasma Bubbles: Suppression of EPBs and Quasi-6-Day Oscillations

Aa, Ercha; Pedatella, Nicholas M.; Liu, Guiping (MDPI AG, 2024-04-21)

This study investigates the day-to-day variability of equatorial plasma bubbles (EPBs) over the Atlantic–American region and their connections to atmospheric planetary waves during the sudden stratospheric warming ...

Multi-instrumental analysis of the day-to-day variability of equatorial plasma bubbles

Rideout, William; Erickson, Philip J.; Coster, Anthea J.; Zhang, Shun-Rong; Aa, Ercha

The nighttime ionospheric response and occurrence of equatorial plasma irregularities during geomagnetic storms: a case study

Wan, Xin; Xiong, Chao; Gao, Shunzu; Huang, Fuqing; Liu, Yiwen; e.a. (Springer Singapore, 2021-11-01)

Abstract Recent studies revealed that the long-lasting daytime ionospheric enhancements of Total Electron Content (TEC) were sometimes observed in the Asian sector during the recovery phase of geomagnetic ...

Salient Midlatitude Ionosphere‐Thermosphere Disturbances Associated With SAPS During a Minor but Geo‐Effective Storm at Deep Solar Minimum

Aa, Ercha; Zhang, Shun‐Rong; Erickson, Philip J.; Coster, Anthea J.; Goncharenko, Larisa P.; e.a. (American Geophysical Union (AGU), 2021-06-23)

This work conducts a focused study of subauroral ion-neutral coupling processes and midlatitude ionospheric/thermospheric responses in North America during a minor but quite geo-effective storm on September 27–28, 2019 ...

Statistical Analysis of Equatorial Plasma Irregularities Retrieved From Swarm 2013–2019 Observations

Aa, Ercha; Zou, Shasha; Liu, Siqing (American Geophysical Union (AGU), 2020-04)

A Statistical Study of the Subauroral Polarization Stream Over North American Sector Using the Millstone Hill Incoherent Scatter Radar 1979–2019 Measurements

Aa, Ercha; Erickson, Philip J.; Zhang, Shun‐Rong; Zou, Shasha; Coster, Anthea J.; e.a. (American Geophysical Union (AGU), 2020-10)

Traveling Ionospheric Disturbances in the Vicinity of Storm‐Enhanced Density at Midlatitudes

Zhang, Shun‐Rong; Nishimura, Yukitoshi; Erickson, Philip J; Aa, Ercha; Kil, Hyosub; e.a. (American Geophysical Union (AGU), 2022-08)

This study provides first storm time observations of the westward-propagating medium-scale traveling ionospheric disturbances (MSTIDs), particularly, associated with characteristic subauroral storm time features, storm-enhanced ...