Ercha Aa

Ercha Aa

Research Scientist Ionosphere-Thermosphere physics and space weather, focusing on ionospheric data assimilation, subauroral electrodynamics, equatorial plasma irregularities, and geospace storm effects.
Office Phone 617-715-5621
Email aercha@mit.edu

I completed my PhD at Peking University in 2012. I then worked at the National Space Science Center in the Chinese Academy of Sciences and the University of Michigan, respectively. I joined MIT Haystack Observatory in 2019.

My research interest is in general Ionosphere-Thermosphere physics and space weather, with a concentration on multi-scale ionosphere and thermosphere processes, including equatorial plasma irregularities, subauroral dynamics and electrodynamics, geospace storm effects, and transient ionospheric disturbances. I am also interested in GNSS-based ionospheric data assimilation and empirical modeling.

Recent Publications

3‐D Ionospheric Imaging Over the South American Region With a New TEC‐Based Ionospheric Data Assimilation System (TIDAS‐SA). Space Weather. (2024). DOI: https://doi.org/10.1029/2023SW003792

Significant Midlatitude Bubble‐Like Ionospheric Super‐Depletion Structure (BLISS) and Dynamic Variation of Storm‐Enhanced Density Plume During the 23 April 2023 Geomagnetic Storm. Space Weather. (2024). DOI: https://doi.org/10.1029/2023SW003704

2‐D Total Electron Content and 3‐D Ionospheric Electron Density Variations During the 14 October 2023 Annular Solar Eclipse. Journal of Geophysical Research: Space Physics. (2024). DOI: https://doi.org/10.1029/2024JA032447

All publications