Disputas - Master of science Tuomas Heiskanen

Disputas - Tuomas Heiskanen


Master of science Tuomas Heiskanen will on june 10th at 12.15 publically defend his PhD degree in science.

Title of the PhD thesis:

"On the linkage between atmospheric circulation changes and Arctic climate change"


During the last decades the Arctic has warmed at a rate twice that of the northern hemisphere. Global climate change may lead to circulation changes, which may lead to the extra warming of the Arctic region. Here we evaluate and propose methods for decomposing atmospheric energy transport into components based on the length-scale of the weather systems transporting the energy. These systems may affect the Arctic in different ways, energy transport by large-scale systems are shown to impact the whole Arctic strongly, whilst energy transport by small-scale systems is shown to be more important regionally. Trends in atmospheric energy transport components are already observable in the present, which suggest that they can have played a role in the rapidly increasing Arctic temperatures and mass loss from the Greenland ice-sheet.

The thesis is published and available in Munin


  • Professor Rune Grand Graversen, IFT, UiT (main supervisor)
  • Scientist Richard Bintanja, Koninklijk Nederlands Meteorologisch Instituut (KNMI), De Bilt, Nederland

Evaluation committee

  • Prof. of Meteorology Sukyoung Lee, The Pennsylvania State University, Department of Meteorology and Atmospheric Sciences, USA (1. opponent)
  • Ass. Prof. and Docent in Meteorology Gabriele Messori, Uppsala University, Department of Earth Sciences, Uppsala, Sweden (2. opponent)
  • Professor Odd Erik Garcia, IFT, UiT (internal member and leader of evaluation committee)

Leader of the defense: Unni Pia Løvhaug

Links to the trial lecture and defense will be possible to open when the live stream begins. If you haven`t clicked the link to the folder before it begins, refresh the web browser for them to become visible. If you have clicked the link to the trial lecture or defense before it has started, it will open automatically when the stream begins. 

Link to folder which contains trial lecture and defense

The trial lecture starts at 10.15 june 10th 2022

Trial lecture

The defense starts 12.15 june 10th 2022


Når: 10. juni 2022 kl. 12.15–16.00
Hvor: Teknobygget auditorium 1.022
Studiested: Digitalt, Tromsø
Målgruppe: Gjester / eksterne, inviterte, enhet, Ansatte
Kontakt: Eirik Derås Verlo
E-post: eve012@uit.no
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