Two components TSP Thermal State of Permafrost permafrost
- Slides: 18
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
Le permafrost – paramètres pertinents TAAM = Température moyenne annuelle air Evolution du couvert neigeux T<0°C Tmin Couche active Toit du pergélisol 0°C T>0°C Tmax BTS = Bottom Temperature of Snow cover GST = Ground Surface Temperature 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 Sol non gelé Profondeur de la base
• Reactivated 2011 • National correspondents established 2013 • NC meetings 2013, 2015 • Database established 2013 • Database operational since 2015 • YNC nominated 2016
Structure of GTN-P
Structure of GTN-P
1360 boreholes 485 with full data
250 ALT sites 102 with full data
gtnpdatabase. org
Reporting
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
Outlook • Defining of new products: – Ground surface temperature – Surface dynamics: rockglacier creep, active layer slides, … – Thermokarst – Inventories: rockglaciers, thermokarst lakes, …
Natural hazards
Coastlines
GTN-P meeting – 24 June Monitoring session – 25 June
Construction of network and DMS : done Guidelines: in progress Not started yet
