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Successful PhD defence from Isabelle Gouttevin

Isabelle Gouttevin, photo: Julia Boike, Alfred Wegener Institute

PhD student Isabelle Gouttevin from the PAGE21 partner Laboratory for Glaciology and Environmental Geophysics in Grenoble successfully defended her PhD thesis on Thursday, December 20. She contributed with her PhD thesis “Contribution à la répresentation des hautes latitudes dans un modèle de surface: gel des sols and diagnostiques de performances” to the activities in the work packages 6 and 7 within PAGE21. Beside Isabelles scientific supervisors Gerhard Krinner from LGGE, who is also the leader of WP6 and Philippe Chias from the Laboratoire des Sciences du Climat et l'Environnement, Julia Boike from the PAGE21 consortium attended the defense.

Congratulations Isabelle also from the PAGE21 Team!

Frequently Asked Questions

 

 PAGE21 Mammoth

Q1: What is permafrost?

  • A: Permafrost is permanently frozen soil that remains below the freezing mark all year around. The scientific definition states that the soil must stay at or below 0°C at least two consecutive summers to be considered permafrost.
 

Q2: How much of the earth surface is classified as permafrost?

  • A: 24% of the earth´s land surface in the northern hemisphere is classified as permafrost. Permafrost can be found in the Arctic, but also in mountaineous regions around the globe (even on top of the Kilimandjaro), on the Tibet Plateau and in Antarctica.
 

Q3: Why is permafrost such a hot topic right now?

  • A: In recent decades, global climate has been changing rapidly. strong warming has been observed, especially in the high latitudes and climate models project strong warming also in the future. Because of this warming climate, permafrost begins to thaw.
  • This thawing can have severe consequences for infrastructure in permafrost areas but most importantly, it will allow previously frozen carbon to be transformed by microbes into carbon dioxide or methane. Scientists have established that previously unsuspected amounts of carbon and nitrogen in to the atmosphere, possibly accelerating global warming even more. This is the "Permafrost carbon feedback".
 

Q4: What is PAGE21 researching?

  • A: The PAGE21 project aims to understand the interactions between the global climate system and frozen ground. It will quantify permafrost thaw in selected areas in the northern hemisphere and measure nitrogen and carbon emissions in these areas. In addition, the project will investigate what direct impacts the thawing and the nitrogen and carbon emissions will have on the climate of the Earth.

 

 

 

 

Programme

The Agenda for the PAGE21 General Assembly and Young Researcher Meeting is ready for download:

News from Vokuta/ Seida: Setting up the site

The latest entry from the field site Vorkuta/ Seida is online: http://page21.org/component/content/article/67-blogs/vorkuta-seida/92-setting-up-the-site

Promotional Material

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Infographics

Here below you can find permafrost related informational graphics created by the PAGE21 project. They are freely available for anyone to use, provided that they are attributed to the PAGE21 project and not used in commercial purposes.

 

 Permafrost  Coastal Erosion
 Polygon  Pingo
 Coring  Remote Sensing
 Thermokarst  microbial activity

 

 

mapping