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Thanks to the Young Complexity Researchers Utrecht (YCRU) group, they brought these popular sessions back to the CCSS for our researchers to discuss challenges in Complex Systems Studies. Everyone is welcome!

Therefore, we cordially invite you to the Science Jam #64 on Tuesday 23 September (12:00-13:00) at the Centre for Complex Systems Studies (CCSS) where you can:

• Get a free gourmet lunch with the best sandwiches you can get at the Utrecht Science Park plus nice drinks;
• Know one senior complexity researchers' work over one-hour lunch time;
• Contribute your professional knowledge and experiences in a relaxing and informal setting;
• Develop potential collaboration.

Leading complexity researcher: Prof. dr. Erik van Sebille, Physical Oceanography & Public Engagement and Science Communication, Utrecht ľ¹Ï¸£ÀûÓ°ÊÓ 

Abstract:
The world's ocean currents play a key role in the global distribution of heat, nutrients, plankton, fish, and plastic. The most natural way to study transport pathways and the connections between ocean basins is in a so-called Lagrangian framework, where the ocean currents are analysed following a fluid parcel as it moves through space and time. In this Science Jam, I will show how our uses this Lagrangian framework to map the complex ocean flows and spatial patterns using trajectories of fluid parcels and particulates. These trajectories can come either from observed drifters or from simulating virtual Lagrangian particles in fine-resolution ocean models. As a specific example, I will discuss how we use physics-informed machine learning to discover the processes that control the pathways of drifting buoys, and parameterise these to develop simulations of large plastic items on the surface of the ocean. Our workhorse tool is the open-source . Parcels is a highly customisable Lagrangian simulation framework developed by our team here at UU. Used in more than 250 peer-reviewed articles and by dozens of groups around the world, it is one of the key oceanographic Lagrangian software packages. In the final part of the Science Jam, I will reflect on the challenges and opportunities of developing and maintaining such a community code in the context of Open Science.

Everyone is welcome and please feel free to invite your colleagues/friends/classmates/students to join us.

If you would like to have the lunch arrangement, please sign up before 15:00 Monday 22 September.