Inga Koszalka Associate professor

Inga Monika Koszalka
Associate Professor of Coastal Oceanography & Baltic Sea Fellow

## CURRENT PROJECTS

ALGOTL: "A new forecast framework for algae bloom hazard to secure future water supply and development of tourism on Gotland". I am leading a collaboration between Stockholm University, the Swedish Meteorological and Hydrological Institute (SMHI) and Region Gotland. The four-year project aims to develop a novel forecast framework for intense algae blooms and other natural hazards to the desalination plants on Gotland. Role: PI. Founder: FORMAS (2023-2026). More information: ALGOTL (sv), ALGOTL (eng)

DRIFTARE: Development of surface drifter platforms for coastal research in the Baltic Sea. Role: PI. Founder: Bolin Centre for Climate Research (2021-2022). MISU (2024-2027).

PERSPECTIVES on CLIMATE CHANGE in COASTAL SEAS. PhD Student: Hanna Winge. Role: Co-PI/Supervisor (2024-2028). More information: Coastal PhD School

SeRC MCP Data Science. Subproject 7: Scientific machine learning for coastal ocean data
Leaders: Elias Jarlebring (KTH) and Inga Koszalka (MISU). Role: Co-PI, Co-advisor of 2 PhD students at KTH. Founder: SeRC (2024-2026), KTH. More infortmation: SeRC MCP Data Science

## RESEARCH

I am Associate Professor of Coastal Oceanography at the Department of Meteorology, Stockholm University (MISU) and a research fellow (Baltic Sea Fellow) at the Stockholm University Baltic Sea Centre.

The focus of my current research is on mesoscale- and regional ocean circulation, its variability as well as ocean interactions with atmosphere, cryosphere and biosphere. In my research, I employ observations, idealized ocean models and regional ocean model output, Lagrangian analysis and modelling, statistical methods, and theory. My studies address ocean turbulence and turbulent dispersion which are not well understood yet important element of the climate system and require hollistic and novel approaches. I am focused on the Atlantic Ocean, the Nordic Seas, Greenland shelves and fjords and the Baltic Sea (main focus). I have a broad background and scientific interests spanning various topics of Geophysical Fluid Dynamics.

## TEACHING

Since I joined MISU in 2019, I have been course responsible for two courses at MISU's Master's Programme in Atmospheric Sciences, Oceanography and Climate Physics: Geophysical Fluid Dynamics (from 2024 the course includes the baroclinic instability and is called Waves and Instabilities) and Physical Oceanography. Both courses are given annually. I have developed the latter course including an oceanographic cruise on R/V ELECTRA and a data analysis lab in collaboration with the Stockholm University Baltic Sea Centre. Since 2025 I am also a responsible for the PhD course Advanced Oceanography. In 2019 I organized and co-taughed two Machine Learning workshops for PhD students (SeRC and CIM). I served as a Director of Undergraduate Studies at MISU in spring semester 2021.

During my earlier work appointments in USA and Germany, I taught several courses at the undergraduate, master and doctorate levels, including Geophysical Fluid Dynamics, sea-going physical oceanography, Regional climate variability, Statistics for climate scientists, Thermohaline circulation, and Lagrangian analysis and dispersion (a self-developed master course). I have also organized and taught workshops in Statistics and Machine Learning. For more information, see the tab TEACHING at the bottom of the page.

## EDUCATION

2005-2008: PhD in Fluid Dynamics, Politecnico di Torino, Turin, Italy
1999-2004: M.Sc in Physical Oceanography, University of Gdansk, Poland
2001-2002: Student in Arctic Geophysics, UNIS (University Courses on Svalbard)

## EMPLOYMENT

2019-present: Associate Professor, MISU, Stockholm University, Sweden
2015-2019: Junior Professor, GEOMAR and Kiel University, Germany
2011-2014: Assistant Research Scientist, Johns Hopkins University, Baltimore, USA
2008-2011: Postdoctoral Researcher, University of Oslo, Norway

## VISITING APPOINTMENTS

2010, Oct-Nov: Norwegian Polar Institute, Tromsoe, Norway
2006, May-July: Woods Hole Oceanographic Institution, USA (Mary Sears Fellow)
2005, Jun-Aug: Woods Hole Oceanographic Institution, USA (GFD Fellow)
2004, Oct-Dec: International Centre for Theoretical Physics, Trieste, Italy

## FELLOWSHIPS and AWARDS

2019: AGU 2018 Editor’s Citation for Excellence in Refereeing
2005: GFD Fellow, Woods Hole Oceanographic Institution, USA
2004: PhD Scholarship `Progetto Lagrange', Politecnico di Torino, Turin, Italy
2003: Scholarship Award, Ministry of National Education and Sport, Poland

## OCEANOGRAPHIC COURSE EXPERIENCE

Western Gotland Basin MO8013 (leader, teacher), R/V ELECTRA, 10/11/2022, 12/11/2023, 14/11/2024, 02/10/2025
Tvären Basin MO8013 (leader, teacher), R/V ELECTRA, 12/11/2021
Western Gotland Basin Cockteil (participant), R/V ELECTRA, 26/08/2021 (DriftBloomClim drifter deployments)
Western Gotland Basin (leader), R/V ELECTRA, 17/06/2021
Landsort Deep MO8013 (leader, teacher), R/V ELECTRA, 15/11/2019
Gotland Basin (researcher), R/V Elisabeth Mann Borgese, 8-24/07/2019
Baltic Sea Student cruise (teacher), R/V , 3 days, 09/2018
Baltic Sea Student cruise (teacher), R/V Alkor, 4 days, 08/2017
Baltic Sea Student cruise (teacher), R/V Alkor, 4 days, 08/2016
Baltic Sea Student cruise (teacher), R/V Poseidon, 4 days, 10/2015
Barents Sea (researcher), POLEWARD project, R/V G. O. Sars, 24/06–1.07/2009
Norwegian Sea (researcher), POLEWARD project, R/V Hakon Mosby, 6–11/10/2008
East Coast US (researcher), SW06, R/V Endeavor, 3–17 08/2006
Baltic Sea student cruises (student), R/V Oceanonograf II, 15–21/07/2003
Fram Strait Greenland Sea (UNIS student), R/V Lance, 22–26/08/2002
Kongsfjord, Svalbard (UNIS student), R/V Haakon Mosby, 6–8/09/2001

## GROUP

Current members

Hanna Winge, PhD student (MISU), Main advisor (PhD School Perspectives on Climate Change Science in Coastal Seas), 02/2024-present (Coastal transport in a changing climate and its consequences for the marine ecosystem and the carbon cycle).

Dimitrios Antivachis, PhD student (MISU), Main advisor (ALGOTL), 08/2023-present (Lagrangian turbulent transport and risk modelling of algae blooms in the Baltic Sea).

Matteo Masini, PhD student (MISU), Main advisor (ALGOTL), 09/2021-present (Dynamics of upwellling systems in the Baltic Sea)

Jonas Friedriksson, PhD student at IGV, SU, Co-advisor. 05/2022-present.

Vilhelm Peterson Lithell, PhD student at KTH (SeRC MCP Data Science), Co-advisor (07/2024-present).

Jiayu Bian, PhD student at KTH (SeRC MCP Data Science), Co-advisor (09/2025-present).

Mahé Faron, ERASMUS master student (from AMU, Marseille, France), Advisor, 01/2026-06/2026.

Past members

Jonathan Wiskandt, PhD student (MISU), Main advisor (Ice-FEM-Ocean).
05/2020-01/2025. Graduated, defense 13/12/2024. Thesis title: Modelling ice shelf-ocean interactions in Greenlandic fjords. Now postdoc researcher at the Department of Mathematics, Stockholm University (until December 2025).

Mael Le Corre, ERASMUS intern (DRIFTERS), 05-08/2025.

Jakob (Laura) Nelsone, Research Assistant (ALGOTL), 08-12/2025 .

Jakob (Laura) Nelsone, Master student (MISU), Main advisor, Defense 10/24. Thesis title: Effect of fjord geometry on Ryder glacier ice cavity circulation and basal melt in numerical model simulations.

Hanna Winge, Master student (MISU & The Baltic Sea Centre). Defense: 09/23. Thesis title: Dynamic behavior of hydrodynamic induced sediment resuspension and nutrients release. Case study of shallow bays in the Baltic Sea. Now PhD student in my group at MISU.

Johan Tengholm, Bachelor student (MISU). Defense: 06/23. Thesis title: ENSO-En sammanställning och modellering av ett betydelsefullt fenomen. Graduated with master from MISU in June 2025.

Foucaut Tachon, Master student (ERASMUS-CIVIS, Aix-Marseille University), Main advisor. Defense: 06/2022. Thesis title: Disentangling plankton dynamics in a turbulent sea from Lagrangian trajectories. Now PhD student in Quebec.

Johannes S. Dugstad, PhD student (University of Bergen; ProVoLo), Co-advisor. Graduated: 11/2020. Thesis title: Water mass exchange, pathways and the mesoscale eddy field in the Lofoten Basin of the Norwegian Sea. Now teacher at the Elvebakken videregående skole i Oslo.

Ziqi Yin, Master student (MISU), Main advisor. Defense: 06/2020. Thesis title: Ice-ocean interactions in a Greenland fjord. Now PhD student in Colorado, USA.

Mia Sophie Specht, Master student (GEOMAR/CAU Kiel), Main advisor. Graduated: 10/2018.
Thesis title: Variability of Atlantic Water inflow onto the Northeast Greenland continental shelf (FeedMeltPath/GROCE). Mia defended her PhD at International Max Planck Research School (IMPRS-ESM) 24-03-2023. Now postdoc at MPI.

Joost Hemmen, Master student (GEOMAR/CAU Kiel), Main advisor. Graduated: 10/2018.
Thesis title: Transport by mesoscale and submesoscale flows of the central Baltic Sea in a high resolution regional ocean model. Now data scientist at Helmholtz-Zentrum Geesthacht.

Patrick Wagner, Master student (GEOMAR/CAU Kiel), Co-advisor. Graduated: 03/2017.
Thesis title: Eulerian and Lagrangian tracer spreading in an high resolution Ocean General Circulation Model.

Jan Spliethoff, Bachelor student (GEOMAR/CAU Kiel), Main advisor. Graduated: 10/2018.
Thesis title: Rafting through the 2015/2016 El-Nino: Oceanographic analysis of the Kon-Tiki2 expedition.

Regina-Maria Keller, Bachelor Student (GEOMAR/CAU Kiel), Co-advisor. Graduated: 07/2016.
Thesis title: Cross-frontal mixing in the Agulhas Current induced by its meandering.

Niko Schmidt, Student research assistant, Dpt. Math, CAU Kiel (08-12/2018).
(Proj: FeedMeltPath/GROCE).