1. Two components
TSP - Thermal State of Permafrost: permafrost temperature in boreholes
ALT – Active Layer Thickness: thickness and dynamics of the active layer
GTN-P DMS – data management system

2. Le permafrost – paramètres pertinents
TAAM = Température moyenne annuelle air
Evolution du couvert neigeux
T<0°C
0°C
T>0°C
BTS = Bottom Temperature of Snow cover
GST = Ground Surface Temperature
Tmin
Tmax
Couche active
Toit du pergélisol
Profondeur de la couche active
ZAA = Zero Annual Amplitude (prof + T°)
Pergélisol s.s.
Temperature moyenne minimale (prof + T°)
Teneur en glace
Base du pergélisol
Profondeur de la base
Sol non gelé

3. Reactivated 2011
National correspondents established 2013
NC meetings 2013, 2015
Database established 2013
Database operational since 2015
YNC nominated 2016

4. Structure of GTN-P

5. Structure of GTN-P

6. 1360 boreholes
485 with full data

7. 250 ALT sites
102 with full data

8. gtnpdatabase.org

9. Reporting

10. Challenges Funding !!! Ensure perennial GTN-P secretariat
funding by AWI gets to an end ..
Secure de GTN-P DMS:
mirror site in Germany: done
mirror site in Russia: in progress
data manager position
Field data aquisition:
on voluntary basis
national networks

11. Outlook Defining of new products: Ground surface temperature
Surface dynamics: rockglacier creep, active layer slides, …
Thermokarst
Inventories: rockglaciers, thermokarst lakes, …

12. Natural hazards

13. Coastlines

14. GTN-P meeting – 24 June
Monitoring session – 25 June

15. Construction of network and DMS : done
Guidelines: in progress
Not started yet