Measurement setup at the Oulanka Research Station, Finland. Photo: Shaakir Dar.

Winters under Pressure: Life in a Changing Cold Environment

Multidisciplinary winter field course for PhD researchers and Master students 

Date: 22 February – 1 March 2026 (effective course dates 23 Feb – 1 March)

Location: Oulanka Research Station, Finland

This multidisciplinary course will form an introduction to a wide range of topics related to biotic and abiotic processes which in different ways are active during winter in northern terrestrial and freshwater environments. Snow is the main component of the northern winters, and we will be measuring the snowpack properties and the applicability of stable water isotopes to understand snowpack metamorphism. We will be studying microbial activity in streams, soil, and groundwater, below the snow and ice. The microbial activity is linked to greenhouse gas (CO2 and CH4) exchange between the ecosystems and the atmosphere, and the students are introduced to measurements of these activities and gas exchange as well as the role of vegetation in these processes. All topics will be explored through the lens of ongoing climate change, with a particular focus on warming winters, increasingly frequent extreme weather events, and episodic thaw-freeze cycles occurring even in mid-winter.

The course is a mixture of lectures and excursions which will end with group-based project work where the students get exposed to working in the field under challenging winter conditions and present their own results based on the data collected during the course. Provided attending the course teaching and successful delivery of the course project and assignment, students can be awarded 5 ECTS study credits.The Winter School is part of the CryoSCOPE project and coordinated by the University of Oulu Water Energy and Environmental Engineering and the Ecology and Genetics research units, and in collaboration with Aarhus University, Denmark.

Teachers

Kaisa-Riikka Mustonen

(carbon-water interactions in aquatic environments, aquatic microbial abundance and activity)

Torben R. Christensen and Mikhail Mastepanov

(biogeochemistry, greenhouse gas flux measurements, carbon balance and methane emissions)

Maria Väisänen and Eeva Järvi-Laturi

(soil chemistry, microbial activity and plants)

Charlotte Ditlevsen and Pertti Ala-aho

(snow sampling, snowpack properties and metamorphism)

Shaakir Dar

(stable water isotopes, isotope measurements)

Special Guest Artist

Josefina Nelimarkka

will be joining us for the week and host an Art-Science workshop one evening!

Application Conditions

Registration is open between 3.11.2025 – 15.12.2025 and registration is binding! 

The course is free of charge, no course fees to pay upon registration. However the admitted students are expected to cover the costs for:  

  1. travel to Oulanka research station (Liikasenvaarantie 134, Kuusamo, Finland)  
  2. subsistence during the course (meals available at the station for ~200€) 
  3. housing at the station (total cost for the week in stations dorms ~280€) 

Max 25 students will be selected for the course. Students will be informed about their possible acceptance one week after the registration ends. Online info lecture about the course practicalities will be arranged in January 2026. 

When applying please prepare a max 200-word motivation letter, to answer the following questions: 

  1. Why did you apply for this course?
  2. Why should you be selected for the course?
  3. Statement from your supervisor/advisor to verify support for your participation, and related costs.

Please send your motivation letter and supervisor support letter to: Shaakir.Dar@oulu.fi 

For further questions, please contact: Shaakir.Dar@oulu.fi and Pertti.Ala-aho@oulu.fi 

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