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 was held in Liberia, Costa Rica from February 9 to 13, 2026. 

The venue for ISEA 17 was the University of Costa Rica – Guanacaste Campus (Sede de Guanacaste), located at Barrio El Capulín, Liberia, Guanacaste, Costa Rica, along National Route 21, just minutes south of downtown Liberia.
Google Maps: https://maps.app.goo.gl/8SobstnP3gRLuygp8

The call for abstracts was closed on August 31, 2025. The call for travel support application was closed on July 31, 2025. 

ISEA17 was followed by the United Nations/Costa Rica Workshop on Machine Learning applied to Space Weather and Global Navigation Satellite Systems 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).

The Special Issue for ISEA 17 in Earth, Planets and Space is now open for submission. You can submit your contribution until 31 December 2026 here:
https://link.springer.com/collections/fccahcbcga

Please also note that Springer Nature offers waivers and discounts on Open Access publication fees for authors from reduced-income countries. You can find the full list of eligible countries here:
https://www.springernature.com/gp/open-science/policies/journal-policies/apc-waiver-countries