Publications

Andreas Plach, Lucie Bakels, Andreas Stohl. 2025. Reduction of residence time of air in the Arctic since the 1980s. ESS Open Archive. https://doi.org/10.22541/essoar.175318972.29624962/v1

The Arctic has seen dramatic changes in temperature, snow cover, and sea ice in recent decades. Here we use a simple metric, the Arctic residence time of air, that is, the time air spends uninterruptedly north of 70°N, to evaluate how these changes have affected the high-latitude atmospheric circulation in the last 40 years. We find that, on average, near-surface air resides between 7 (summer) and 12 (winter) days in the Arcti...

Lucie Bakels, Daria Tatsii, Anne Tipka, Marina Dütsch, Michael Blaschek, Silvia Bucci, Andreas Plach, Martin Vojta, Petra Seibert, Ignacio Pisso, Sabine Eckhardt, Massimo Cassiani, Christine Groot Zwaaftink, Marie Mulder, Andreas Stohl. 2025. FLEXPART-11: Advancements in a Lagrangian Atmospheric Model for Enhanced Accuracy, Efficiency and Flexibility. EGU. https://doi.org/10.5194/egusphere-egu24-2652

Numerical methods and advanced simulation codes play a crucial role in helping us understand complex atmospheric processes. As technology progresses, it's important to develop sophisticated code for accurate and efficient simulations. In this update to FLEXPART, a Lagrangian model used in numerous studies for the past 30 years, we've made significant improvements. This version of FLEXPART shows improvements in accuracy and com...

Michael Blaschek, Lucie Bakels, Marina Dütsch, Andreas Stohl. 2025. FLEXWEB - A flexible particle dispersion model web interface. EGU. https://doi.org/10.5194/egusphere-egu24-15051

Flexpart (FLEXible PARTicle dispersion model) is a numerical model that simulates the dispersion of gases and aerosols in the atmosphere. In order for Flexpart to be used, it must be installed and run on a (super)computer. However, this is associated with obstacles, as not all scientists have access to a supercomputer and there are often technical problems during installation or execution. In this project, we therefore want to...

Silvia Bucci, Daria Tatsii, Ioanna Evangelou, Lucie Bakels, Andreas Stohl. 2025. Tracking the sources of atmospheric microplastic using FLEXPART v.11. EGU. https://doi.org/10.5194/egusphere-egu24-16953

An emerging number of studies highlighted the presence of microplastic in the atmosphere all over the world. The presence of such particles has been observed at the poles, in the marine atmosphere above the surface of the oceans, in clouds, on the fresh snow of high mountains and high concentrations has been observed in the atmospheric fallout in densely populated areas. Despite so, the main sources of atmospheric microplastic...

Lucie Bakels, Lan Wang-Erlandsson, Ruud van der Ent, Arie Staal, Patrick Keys, Delphine Clara Zemp, Ingo Fetz, Makoto Taniguchi, Line J. Gordon. 2025. Dry periods amplify the Amazon and Congo forests' rainfall self-reliance. https://doi.org/10.5194/egusphere-egu25-21252

Moisture recycling is an important source of precipitation in the tropical forests of South America and Africa. Moisture is partly recycled from the tropical forests themselves (forest rainfall self-reliance) and is therefore subject to deforestation, which reduces evaporation. During the dry season, when water is already scarce, a further reduction in precipitation due to decreasing moisture recycling rates could potentially ...

Lucie Bakels, Michael Blaschek, Marina Duetsch, Andreas Plach, Vincent Lechner, Georg Brack, Leopold Haimberger, Andreas Stohl. 2025. A new computer mirror for studying air moving through space and time. https://doi.org/10.5194/egusphere-egu25-21647

Computer mirrors are important for studying air. Most computer mirrors are about fixed points in space and time. This fixed approach is good for many studies, but studies focused on going through the air could use moving points in space and time. We made a computer mirror using moving points in space and time for all air in the world using winds from a computer mirror using fixed points in space and time. Everyone can use this...

Lucie Bakels, Michael Blaschek, Marina Dütsch, Andreas Plach, Vincent Lechner, Georg Brack, Leopold Haimberger, Andreas Stohl. 2025. Supplementary material to "LARA: a Lagrangian Reanalysis based on ERA5 spanning from 1940 to 2023". https://doi.org/10.5194/essd-2025-26-supplement

Meteorological reanalyses are crucial datasets in atmospheric research, providing the foundation for many scientific applications. However, most reanalyses follow a Eulerian framework, providing data at specific, fixed points in space and time. This fixed-location approach is suitable for many scientific analyses, but studies focused on transport in the atmosphere would benefit from a Lagrangian framework, which provides data ...

Lucie Bakels, Michael Blaschek, Marina Dütsch, Andreas Plach, Vincent Lechner, Georg Brack, Leopold Haimberger, Andreas Stohl. 2025. LARA: a Lagrangian Reanalysis based on ERA5 spanning from 1940 to 2023. . https://doi.org/10.5194/essd-2025-26

Meteorological reanalyses are crucial datasets in atmospheric research, providing the foundation for many scientific applications. However, most reanalyses follow a Eulerian framework, providing data at specific, fixed points in space and time. This fixed-location approach is suitable for many scientific analyses, but studies focused on transport in the atmosphere would benefit from a Lagrangian framework, which provides data ...

Daria Tatsii, Ioanna Evangelou, Silvia Bucci, Lucie Bakels, Andreas Stohl. 2025. How much microplastic reaches the stratosphere? The example of road traffic-related emissions. https://doi.org/10.5194/egusphere-egu24-8969

Depending on their size and shape, microplastic particles have the potential to be transported over great distances in the atmosphere, both vertically and horizontally. Recent studies have shown that they can even reach the stratosphere. However, there is a lack of information on the distribution and amount of microplastics in the stratosphere. Here, we estimate how much of microplastics from the second largest primary source...