1:45pm - 2:00pmMO3-1: 1
Dust in the Arctic: interactions between climate, dust, and ecosystems
Outi I Meinander1, Andreas Uppstu1, Pavla Dagsson-Waldauserova2,3, Christine Groot-Zwaaftink4, Christian Juncher Jørgensen5, Alexander Baklanov6, Adam Kristensson7, Andreas Massling8, Mikhail Sofiev1
1Finnish Meteorological Institute, Finland; 2Agricultural University of Iceland; 3Czech University of Life Sciences; 4NILU; 5Niels Bohr Institute, Aarhus University; 6Copenhagen University; 7Lund University; 8Interdisciplinary Centre for Climate Change (iClimate), Aarhus University
Dust in the Arctic is an emerging topic related to climate and environmental impacts. Here we give an overview of our recent understanding on dust emissions and their long-range transport routes, deposition, and ecosystem effects in the Arctic.
2:00pm - 2:15pmMO3-1: 2
Vegetation fires as a source of soil-dust particles – a global model perspective
Robert Wagner, Ina Tegen
Leibniz Institute for Tropospheric Research, Germany
We investigate the potential of wildfires to emit soil-dust particles on a global scale using a newly developed parameterization that was implemented into the aerosol-climate model ICON-HAM. This work is embedded in the newly established Leibniz ScienceCampus ‘BioSmoke’ (smoke and bioaerosols in a changing climate) linking the interplay of wildfires, atmosphere and biosphere in the context of climate and environmental change.
2:15pm - 2:30pmMO3-1: 3
Dusty Skies, Uncertain Power: Saharan dust storms and photovoltaic energy forecasting in Central Europe
Ágnes Rostási1, András Gelencsér1, Fruzsina Gresina2,3, Adrienn Csávics2,3, György Varga1,2,3,4
1University of Pannonia, Hungary; 2HUN-REN Research Centre for Astronomy and Earth Sciences, Hungary; 3ELTE Eötvös Loránd University, Institute of Geography and Earth Sciences; 4CSFK, MTA Centre of Excellence, Budapest, Hungary
Saharan dust events significantly impact photovoltaic power forecasting in Hungary, where solar energy plays an increasing role. Analyzing 46 dust storms (2020–2023), this study finds that forecast errors were 30.9% larger on dusty days. Indirect effects, particularly dust-induced cloud modifications, were more influential than direct radiative reduction. Extensive cirrus cover caused production deficits, while unexpected cloud dissipation led to surplus generation. As dust storm frequency rises due to shifting atmospheric patterns, current forecasting models fail to account for real-time dust-cloud interactions. Improved forecasts integrating real-time dust transport data and cloud physics are essential for grid stability and renewable energy reliability.
2:30pm - 2:45pmMO3-1: 4
Trace metal-containing aerosols in the atmosphere of the Indian Ocean
Aleksandrs Kalamašņikovs1, Praphulla Chandra Boggarapu1, Haseeb Hakkim1, Marco Schmidt1, Robert Irsig2, Sven Ehlert2, Andreas Walte2, Thomas Fennel3, Eric Achterberg4, Johannes Passig1, Ralf Zimmermann1
1Joint Mass Spectrometry Centre, University of Rostock and Helmholtz Munich, Germany; 2Photonion GmbH, Schwerin, Germany; 3Institute for Physics, University of Rostock, Germany; 4GEOMAR Helmholtz Centre for Ocean Research Kiel, Germany
Atmospheric aerosol deposition supplies essential micronutrients like iron to oceans, influencing marine ecosystems and carbon sequestration. While desert dust is the primary source, its bioavailability is low compared to anthropogenic emissions, such as pyrogenic iron. This study presents preliminary data from a 2024 Indian-Ocean ship cruise using a single-particle mass spectrometer with resonant laser ionization, enabling sensitive detection of transition metals. SPMS identified thousands of particles from long-range transport, including anthropogenic sources, with diverse compositions reflecting varied origins and aging processes. The findings highlight a potentially underestimated role of anthropogenic aerosols in biogeochemical cycles, underscoring the need for further research.
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