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The triennial URSI General Assembly and Scientific Symposium (URSI GASS) will be held August 15-22, 2026, in Krakow, Poland.
<b>The abstract submission deadline has been extended to February 9, 2026. </b>Details on the conference can be found at
<span style="color: rgb(150, 96, 125);"><u><a style="color: rgb(150, 96, 125);" class="OWAAutoLink" id="OWA98fd484d-0639-d886-75c7-16641da45962" href="https://www.ursi-gass2026.pl/">https://www.ursi-gass2026.pl/</a></u></span>.</div>
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Also, don’t forget URSI's Young Scientist award program: a limited number of awards are available to assist young scientists from both developed and developing countries to attend this meeting. More details here:
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Below you will find a brief overview of the sessions led by Commission H; the complete list of sessions and their descriptions are available here:
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<b>Commission H sessions</b></div>
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<b>H01: Open Session</b></div>
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<b>In one sentence</b>: A broad session inviting papers on any aspect of waves in space or laboratory plasmas that do not fit within other Commission H topics. </div>
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<b>Conveners</b>: Craig Rodger, Robert Marshall</div>
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<b>H02: Plasma waves, wave‑particle interactions, and their multifold effects on the radiation belts</b></div>
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<b>In one sentence</b>: This session focuses on understanding how plasma waves influence radiation belt dynamics through wave‑particle interactions, including their properties, propagation, and global impacts. </div>
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<b>Conveners</b>: David Hartley, Ondrej Santolik, Yoshizumi Miyoshi</div>
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<b>H03: Drivers, Detection, and Ionospheric Impacts of Precipitation from the Radiation Belts</b></div>
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<b>In one sentence</b>: A session examining the drivers, measurements, and ionospheric consequences of energetic particle precipitation from the radiation belts. </div>
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<b>Conveners</b>: Allison Jaynes, Mark A. Clilverd</div>
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<b>H04: Recent advances in geospace research from wide‑range to multi‑point observations</b></div>
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<b>In one sentence</b>: This session highlights new insights into geospace dynamics using multi‑point, long‑term, and wide‑range observations combined with modeling and data‑driven approaches.</div>
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<b>Conveners</b>: Jyrki Manninen, Francois Ripoll, Yoshiya Kasahara, Hanna Rothkaehl</div>
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<b>H05: Computer Simulations and Machine Learning methods in Space Plasmas</b></div>
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<b>In one sentence</b>: A session dedicated to advances in simulations, numerical methods, and machine learning techniques applied to space plasma physics. </div>
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<b>Conveners</b>: Esa Kallio, Yohei Miyake, Shahab Fatemi</div>
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<b>H06: Turbulence and Instabilities in Space Plasmas</b></div>
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<b>In one sentence:</b> This session explores plasma turbulence and related instabilities across solar, stellar, and planetary environments through theory, modeling, and observations.</div>
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<b>Conveners</b>: Alexander Pitňa, Gary Zank, Julia E. Stawarz, Victor Montagud Camp</div>
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<b>Joint Sessions Led by Commission H</b></div>
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<b>HG1: Small satellites, suborbital experiments, and new instruments for near‑Earth space science</b></div>
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<b>In one sentence</b>: A session on recent and upcoming small‑satellite, sounding‑rocket, and balloon missions that advance near‑Earth space science through innovative instruments and measurements. </div>
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<b>Conveners</b>: Robert Marshall, Bruce Fritz, David Malaspina</div>
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<b>HG2: Active Experiments in Space Plasmas</b></div>
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<b>In one sentence</b>: This session covers active space and laboratory experiments that perturb plasmas to test theories, develop diagnostics, and improve predictive capabilities. </div>
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<b>Conveners</b>: Robert Moore, Mark Golkowski</div>
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<b>HGE: Atmospheric, ionospheric, magnetospheric, and high‑energy effects of lightning discharges</b></div>
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<b>In one sentence:</b> A session exploring lightning‑driven energetic phenomena and their impacts on the atmosphere, ionosphere, and magnetosphere, with emphasis on new space‑ and ground‑based observations. </div>
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<b>Conveners</b>: Ivana Kolmašová, Martin Fullekrug, Ningyu Liu</div>
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<b>HGJ: Panel Discussion for Early Career Researchers</b></div>
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<b>In one sentence</b>: A panel session where senior researchers discuss the evolution of space physics, emerging research directions, and career insights for early‑career scientists. </div>
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<b>Conveners</b>: David Hartley, Bruce Fritz, Mohamed Said Darwish</div>
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<b>HJ: Radio observations and diagnostics for the Sun, heliosphere and space weather</b></div>
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<b>In one sentence</b>: This session invites work on radio observations and modeling of solar and heliospheric emissions to advance understanding and forecasting of space weather. </div>
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<b>Conveners</b>: Mauro Messerotti, Pietro Zucca, Yihua Yan, Natchimuthuk Gopalswamy, Divya Oberoi</div>
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<b>Joint Sessions Involving Commission H Led by Other Commissions</b></div>
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<b>EFGH: Natural Electromagnetic Noise and Radio Sensing Applications in Terrestrial and Planetary Environment</b></div>
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<b>In one sentence</b>: A session presenting studies of natural and man‑made electromagnetic noise and their applications in remote sensing of atmospheric, space weather, and planetary environments. </div>
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<b>Conveners</b>: Yasuhide Hobara, Sujay Pal, Tomoo Ushio</div>
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<b>GH: Planetary Space Weather</b></div>
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<b>In one sentence</b>: This session highlights advances in understanding planetary ionospheres, atmospheres, and space‑weather processes across the Solar System. </div>
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<b>Conveners</b>: Alessandro Ippolito, Bruno Nava, Hanna Rothkaehl, Yuki Harada</div>
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