Two years ago, solar cycle 23 entered its declining phase, following its maximum in 2000-2001. Nevertheless, the solar atmosphere and solar magnetic field exhibited numerous extremely strong energy releases in October and November 2003, with powerful solar flares and majestic coronal mass ejections. As a result of this rather unexpected solar activity enhancement, the heliospheric plasma, electromagnetic fields and energetic particle populations as well as cosmic rays were strongly perturbed. Many travelling shock waves, magnetic flux ropes and sporadic high speed solar wind streams were observed. The terrestrial magnetosphere responded to these perturbations with strong magnetic storms, broad aurora, radiation belt, and ionosphere variations. Moreover, significant upper atmosphere and ground disturbances were recorded.
These disturbances are important both because of their impacts on technological systems, and in the framework of the scientific investigations of the near-Earth environment.
The extreme solar-terrestrial events of October and November 2003 were documented recorded by many ground-based and space-borne instruments. We propose to present and discuss observations of SOHO, Cluster, CORONAS-F and "METEOR" spacecraft, the International Space Station, several geo-stationary satellites, as well as on ground observatories world-wide and especially in Russia.
The aim of the Symposium is twofold: 1) to have a world forum for the discussion of recent interesting events in the coupled solar-terrestrial system, which attracted the attention of scientists, engineers and the public, as they are important for our better understanding of the World we are living in and the knowledge of the impacts on technological and biological systems, 2) to create opportunities for new scientific contacts and collaborations.
The following topics will be covered at the Symposium:
- Sun, heliosphere and solar wind properties/dynamics during the extreme events
- Magnetospheric response to the solar extreme events in 2003
- Space weather applications.
The dates of Symposium are particularly suitable for the participants of the COSPAR Assembly. You are welcome!