Solar-Terrestrial Physics (STP) International Symposia

SCOSTEP organizes the Solar–Terrestrial Physics (STP) symposium once every four years.

SCOSTEP is engaged in three major activities: long-term scientific programs, capacity building, and public outreach. The scientific programs are interdisciplinary in nature, involving scientists from around the world. They are designed to advance our understanding of the solar–terrestrial relationship using space- and ground-based observations, cutting-edge models and theory.  The ways the Sun affects the Earth and its environment over various time scales is the underlying theme of the scientific programs pursued under SCOSTEP.


SCOSTEP’s 15th Quadrennial Solar-Terrestrial Physics (STP-15) Symposium was held ONLINE on February 21-25, 2022.

The LOC Chair was Dr. S. Gurubaran of the Indian Institute of Geomagnetism (IIG). This symposium gathered eminent scientists from solar, magnetospheric, ionospheric, and atmospheric physics communities to discuss and deliberate on the cutting-edge sciences pertaining to STP.  STP-15 primarily addressed the predictability as a focus area in each of the traditional topics deliberated upon during the earlier STP meetings, namely, the mass and radiation chains and intra-atmospheric coupling. A workshop for young scientists (STEPSYS) took place one day before the symposium. For full details, please visit the conference website at 

Important dates for STP-15

  • Abstract Submission Deadline: September 15, 2021 October 5, 2021
  • Financial Support Deadline: September 15, 2021
  • Abstract Notifications: October 31, 2021
  • Registration Opens: November 1, 2021
  • Early Bird Registration: November 1 – December 31, 2021
  • Regular Registration: January 1 – February 19, 2022
  • On-site Registration: February 20 – 25, 2022
  • STP-15: February 21 – 25, 2022        VIRTUAL