The International Symposium on Equatorial Aeronomy (ISEA) is held once in every three to four years. Researchers from the fields of atmosphere, ionosphere and magnetosphere science come together in ISEA to share new results, discuss the current state-of-the-art, and identify promising topics for future research. The 17th International Symposium on Equatorial Aeronomy will be held in Liberia, Costa Rica from February 9 to 13, 2026. ISEA17 will also be followed by a workshop on machine learning in San José, Costa Rica between February 16-20, 2026 (https://www.unoosa.org/oosa/en/ourwork/psa/schedule/2026/united-nations-costa-rica-workshop-2026.html).

We will be sharing essential updates regarding registration, venue details, and other pertinent information related to ISEA 17 soon. Please check our webpage regularly for updates.The conference fee will be 600 € (early bird, 650 € late registration fee). This fee includes the welcome event, excursion, coffee breaks and conference dinner. 

The call for abstracts is now open and lasts until July 31, 2025 including travel support applications and until August 15, 2025 for regular abstract submissions.