Professor Dr. Helge W. Arz is a faculty member at the Leibniz Institute for Baltic Sea Research Warnemünde (IOW) in Rostock, Germany. His research specializes in paleoclimate dynamics, with a focus on ocean-atmosphere interactions during the Quaternary period. His work investigates orbital and millennial-scale climate variability using marine and terrestrial sediment archives from regions including the South Pacific, Southern Andes, and Black Sea. Key interests include reconstructing westerly wind systems, carbon storage processes in coastal margins, and solar influences on glacial climates. Professor Arz leads multiple DFG-funded projects such as studies of Pacific Southern Ocean dynamics since the Mid-Pleistocene and paleoenvironmental reconstructions from Chilean fjords. He also contributed to IODP Expedition 383 examining subantarctic oceanography.
Rachael Filwett is an Assistant Professor in the Department of Physics at Montana State University's College of Letters & Science. Her research focuses on energetic particles originating from the Sun and their behavior in interplanetary space and planetary magnetospheres. Her educational background includes a B.S. in Physics, East Asian Studies, and Mathematics from Valparaiso University (2013), followed by M.S. (2016) and Ph.D. (2018) in Physics from the University of Texas at San Antonio. Her academic journey has positioned her at the forefront of space physics research. Dr. Filwett's research centers on ion particle acceleration and transport mechanisms, with particular emphasis on how particles accelerated at the Sun and shocks move through interplanetary space. She utilizes both space-based and ground-based data to investigate particle origins and acceleration processes, with applications to space weather prediction. Her work extends to energetic particle entry and trapping in terrestrial and gas giant magnetospheres. A significant portion of her research involves developing next-generation miniaturized particle instruments for SmallSats that maintain high mass and energy resolution, addressing critical needs in space instrumentation. Her publication record reveals strong emphasis on heliospheric science, with key contributions in solar wind dynamics, particle acceleration mechanisms, and space weather applications. Recent work shows increasing focus on community development, accessibility, and mental health awareness within the heliophysics field. Dr. Filwett actively secures competitive research funding, with current projects including: Suprathermal Property Scaling and Acceleration Processes from the Near-Sun Environment to 1 AU (NASA) Resolving Uncertainty in Past 14C Spikes from Tree Rings (NSF) CAREER: Evolution of Stream Interaction Regions from 1 to 5.4 au and Implications for Geomagnetic Induced Currents (NSF) LabOratory for the Behavior of the SloT Region (LOBSTR) (NASA) She is deeply committed to educational outreach, having developed the CS CORE course ASTR 120 'The Sun and Society' for non-STEM majors and taught various physics courses including honors-level general physics and electromagnetism. Her service includes committee work for the Conference for Undergraduate Women in Physics. Dr. Filwett also champions inclusivity in space physics, advocating for accessibility and mental health awareness within the scientific community.
Carleen Reijmer is an Assistant Professor in the Department of Physics and Astronomy at Utrecht University's Faculty of Science, where she conducts research through the Institute for Marine and Atmospheric Research (IMAU). She is an active member of Michiel Roland Van den Broeke's research group, focusing on polar climate processes and ice sheet dynamics. Dr. Reijmer's research interests center on polar meteorology, ice sheet modeling, and climate change impacts on polar regions. Her work combines field observations from automatic weather stations across Antarctica and Greenland with sophisticated numerical modeling, particularly using the RACMO2 regional climate model. She has made significant contributions to understanding surface energy balance, snow-albedo feedback mechanisms, and turbulent fluxes over ice sheets. Her publication record shows a consistent focus on quantifying surface melt processes, ice sheet mass balance, and the response of polar regions to global warming. The research demonstrates strong interdisciplinary connections between meteorology, glaciology, and climate science, with particular emphasis on how atmospheric processes influence ice sheet behavior. With 159 publications and over 7,500 citations, Dr. Reijmer has established herself as a significant contributor to polar climate research. Her work provides critical insights into how polar ice sheets contribute to sea level rise and how these regions are responding to ongoing climate change. Dr. Reijmer actively collaborates with researchers across international institutions and has contributed to major polar research initiatives. Her work involves both field campaigns deploying automatic weather stations and advanced modeling approaches to understand the complex interactions between atmosphere and ice in polar regions.
Bernd Freytag is a Researcher at the Department of Physics and Astronomy at Uppsala University, specializing in stellar astrophysics with a focus on 3D radiation-hydrodynamics simulations of evolved stars. His work primarily centers on asymptotic giant branch (AGB) stars, red supergiants, and white dwarfs using advanced computational models. Dr. Freytag's research interests include: 3D radiation-hydrodynamics simulations of stellar atmospheres Asymptotic giant branch (AGB) stars and their pulsation mechanisms Red supergiant stars and their extended atmospheres Stellar convection and its effects on surface structures White dwarf atmospheres and evolution Development and application of the CO5BOLD simulation code His recent work has focused on multi-mode pulsations in AGB stars, dimming events in evolved stars, and the asymmetries in stellar winds. Through sophisticated 3D modeling, Dr. Freytag has contributed significantly to understanding the complex dynamics of stellar atmospheres and their observational signatures. His research often bridges theoretical simulations with observational data from instruments like Gaia, ALMA, and interferometric facilities. Dr. Freytag has published extensively in leading astronomy journals including Astronomy & Astrophysics and Astrophysical Journal. His collaborative work spans multiple international institutions, reflecting the global nature of modern astrophysics research.
