Topical Issue "Space Climate: Solar Extremes, Long-Term Variability, and Impacts on Earth’s System"

The Journal of Space Weather and Space Climate (JSWSC) opens a Topical Issue (TI) "Space Climate: Solar Extremes, Long-Term Variability, and Impacts on Earth’s System".

This Topical Issue was initiated at the Space Climate 9 / ISEE Joint Symposium and Sunspot Number Workshop 2024 held in Nagoya and Kyoto (Japan) in early October 2024. However, the TI is not restricted to papers presented during these conferences and is open to any relevant submissions addressing the questions listed below.

This TI invites contributions aiming at understanding long-term solar variability and solar extremes (in terms of particle events and solar grand minimum/maximum states) as well as their effects on the heliosphere, Earth's space environment, atmosphere, and climate. This, in particular, includes the following research topics:

• Understanding the causes and manifestations of long-term solar activity variations;
• Examining the short- and long-term influence of solar activity variations on the Earth’s system;
• Recovering and deciphering historical archives of solar activity and solar storms;
• (Re-)calibration of solar activity indices, in particular of sunspot number.

We welcome manuscripts considering these aspects of Space Climate. The manuscripts must be submitted via the JSWSC online submission tool. Guidelines for the submission of papers and information about article processing charges can be found on the JSWSC website under the tab "Instruction for Authors".

Deadline: 30 September 2025

All manuscripts will be peer-reviewed according to the quality standards of international scientific journals. The type of contributions must fit the style of JSWSC. All manuscripts should contain enough new insights, present the results against a properly referenced background of existing work, and present adequate evidence that supports the conclusions.

Papers will be published immediately upon acceptance, without waiting for the TI closure, in electronic format only, and will be freely available to everyone via the JSWSC website. JSWSC offers the possibility to include electronic material, such as animations, movies, codes and data.

For questions regarding this Topical Issue, please contact the T-EiCs. For questions concerning the submission process, please contact the Editorial Office (This email address is being protected from spambots. You need JavaScript enabled to view it. ).

Topical Editors-in-Chief (T-EiC):

Hisashi Hayakawa (This email address is being protected from spambots. You need JavaScript enabled to view it. ) Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan; Institute for Advanced Research, Nagoya University, Nagoya, Japan; Space Physics and Operations Division, RAL Space, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxfordshire, UK; Riken, Nishina Centre, Wako, Japan
Theodosios Chatzistergos (This email address is being protected from spambots. You need JavaScript enabled to view it. ) Max Planck Institute for Solar System Research, Göttingen, Germany

Topical Editors (TE):

Sabrina Bechet, Royal Observatory of Belgium, Belgium
Prantika Bhowmik, Indian Institute of Science, India
Irina Mironova, St. Petersburg State University, Russia
Eugene Rozanov, PMOD, Switzerland

Topical Issue "Fast and slow solar winds: Origin, evolution and Space Weather effects"

The Journal of Space Weather and Space Climate (JSWSC) opens a Topical Issue "Fast and slow solar winds: Origin, evolution and Space Weather effects", deadline 31st May 2025.

The Topical Issue (TI) is dedicated to the nuanced exploration of Heliospheric Solar-Wind Dynamics and their implications for Space Weather. This issue seeks to bring together cutting-edge studies that shed light on the complex interplay between slow and fast solar winds, their effects on geomagnetic activity, and the propagation of solar transients.

The heliospheric solar-wind structure, arising from the intricate interplay between slow and fast winds, constitutes the primary instigator of minor to moderate geomagnetic activity. Furthermore, it serves as the medium for the propagation of other solar transients. Stream interaction and co-rotating interaction regions are prolific sources of shocks, compression, and rarefaction regions, well-established contributors to recurrent geomagnetic effects on Earth. In light of these dynamics, a comprehensive understanding of the heliospheric solar wind, ambient magnetic field, and their origins is indispensable for the validation and enhancement of Space Weather forecasting efforts. The objective of this TI is to collect and present new studies on the origin, evolution, and Space-Weather effects of both fast and slow solar winds using observational data and modeling approaches. Recent missions, such as the Parker Solar Probe and Solar Orbiter, in conjunction with established missions like the Solar Dynamics Observatory and the Solar Terrestrial Relations Observatories, offer a wealth of information. This data presents an invaluable opportunity to validate, refine, and augment existing knowledge in the solar wind domain.

This Topical Issue is built on two sessions titled "All About the Solar Wind", held during the European Space Weather Weeks 2023 (CD-02) and 2024 (CD7). However, contributions to this TI are not limited to participants ESWW. The TI will be open to all submissions that fit its scope. Submissions focusing on solar wind sources for both slow and fast winds, mechanisms of solar wind acceleration/outflow, dynamics of stream interaction, and the configuration of the magnetic field and plasma topology at the source surface and within the inner heliosphere are encouraged. The integration of observations and models is particularly welcomed, fostering a deeper understanding of solar and heliospheric physics within the context of space weather.

Manuscripts must be submitted via the JSWSC online submission tool. Guidelines for submission of papers are found on the JSWSC website under the tab "Instruction for Authors".

All manuscripts will be peer-reviewed according to the quality standards of international scientific journals. The type of contributions must fit the style of JSWSC. All manuscripts should contain enough new insight, present the results against a properly referenced background of existing work, and present adequate evidence that supports the conclusions. Upon acceptance, papers are published in electronic format, without waiting for the TI to be complete, and are freely available to everyone via the JSWSC website. JSWSC offers the possibility to include electronic material, such as animations, movies, codes and data.

Topical Editor-in-Chief (T-EiC):

• Stephan G. Heinemann (This email address is being protected from spambots. You need JavaScript enabled to view it. ), University of Helsinki, Finland
• Mateja Dumbović (This email address is being protected from spambots. You need JavaScript enabled to view it. ), Hvar Observatory, Faculty of Geodesy, University of Zagreb

Topical Editors (TE):

• Eleanna Asvestari (This email address is being protected from spambots. You need JavaScript enabled to view it. ), University of Helsinki, Finland
• Matt Owens (This email address is being protected from spambots. You need JavaScript enabled to view it. ), University of Reading, UK
• Krzysztof Barczynski (This email address is being protected from spambots. You need JavaScript enabled to view it. ), ETH Zurich and PMOD/WRC Davos, Switzerland
• Stephanie (Steph) Yardley (This email address is being protected from spambots. You need JavaScript enabled to view it. ), University of Northumbria, UK

For questions regarding this Topical Issue, please, contact the T-EiC. For questions concerning the submission process, please contact the Editorial Office (This email address is being protected from spambots. You need JavaScript enabled to view it. ).