Each year, during the European Space Weather Week (ESWW) conference, people from all over the world gather to discuss the newest insights in space weather and try to find appropriate answers to the challenges and threats that space weather imposes. Science, data exploitation, observations, service development, operational models, engineering, industrial challenges, etc. are all relevant and most important aspects of space weather.

One of the strengths of the conference is that the participants can contribute largely to its content. For ESWW15, we foresee sessions in 3 flavours:

• plenary sessions, one oriented towards Users and one towards Operations/Services;
• parallel Science and Research sessions;
• parallel 100% community driven or Open sessions.

We would like to invite and encourage you and your colleagues to submit a proposal for a session. The online submission will be opened on 16 January 2018. The deadline for submission is 2 February 2018, included.

The ESWW Programme Committee (PC) will decide which of the submitted sessions are accepted. Session conveners will be notified by the end of February.

With kind regards
Mauro Messerotti and Petra Vanlommel, on behalf of the ESWW15 PC