Permafrost Polygon Field, Herschel Island, Yukon, Canada. Credits: Saskia Eppinger, TUM (2022).
The Global Terrestrial Network for Permafrost (GTN‑P)
GTN-P – Home for the scientific permafrost community and its data.
The Global Terrestrial Network for Permafrost (GTN-P) is the leading international programme for long-term permafrost monitoring. Its mission is to sustain a comprehensive global network that delivers consistent, high-quality, long-term observations of key permafrost indicators (Permafrost Essential Climate Variable quantities). These data support the assessment of the current state of permafrost and its changes over time.
Map of the GTN-P Permafrost Monitoring Network.
Call for new Young National Correspondents
Each member country of GTN-P is not only represented by a National Correspondent (NC), but also by a Young National Correspondent (YNC). The role of the YNC is to support their country's NC but also to grow into the network. They help collect and upload their countries' data and YNCs are invited to join the yearly GTN-P General Assembly.
Currently the roles of YNC for these countries is vacant:
Austria, Denmark, France, Italy, Japan, Mongolia, Netherlands, New Zealand, Norway & Svalbard, Romania, South Korea, Spain, Sweden, United Kingdom, and USA.
If you are interested in getting more information on the position or becoming your country's YNC, please contact the GTN-P International Office!
GTN-P Data Platform
The GTN-P Data Platform is the central access point for data on Permafrost Temperature (PT) and Active Layer Thickness (ALT).
Explore, view, and download permafrost data:
Permafrost ECV
Essential Climate Variables (ECVs) provide the observational basis for understanding climate change. Permafrost is a key land-cryosphere ECV, defined by GCOS, with core measurements capturing changes in frozen ground that affect climate, ecosystems, and infrastructure. [read more ...]
GTN-P community
The GTN-P governance structure ensures a professional and efficient coordination of the network’s activities. The structure includes a Steering Committee, an Advisory Board, an Office, as well as National and Young National Correspondents. [read more ...]
International Stewardship
GTN-P operates under international stewardship, rooted in the global permafrost community. Its governance and coordination ensure trusted, high-quality observations that underpin climate research, assessments, and international reporting. [read more ...]
GTN-P in numbers
1487
Permafrost Temperature sites
256
Active Layer Thickness sites
20072082
Data points
33
Countries involved
104
Organizations involved
27
Years since foundation
Announcements
GTN-P at the ACOP Permafrost conference 2026
Don’t miss the GTN-P workshop focussing on the importance of Asian Permafrost, the GTN-P session “GTN-P: Local Observations to Global Assessments” as well as a GTN-P poster presentation. [read more ...]
🔥 Registration is now open for the GTN-P workshop! Please register here.
🔥 If you are an Early Career Researcher (ECR) travelling to ACOP, you can apply for the GTN-P/IPA grant covering the ACOP registration fees. [read more ...]
News from the network
Arctic Observing Summit (AOS) 2026
2026-04-14 – The GTN-P Office submitted a short statement to AOS on the new GTN-P Data Platform providing global long-term permafrost observations and also presented a poster focusing on the same topic. [read more ...]
Welcoming our new Young National Correspondents
2026-04-08 – We are pleased to welcome Gregor Luetzenburg and Tom De Ville as our new Young National Correspondents for Denmark and Greenland to the GTN-P community! [read more ...]
Call for Applications:
GTN-P/IPA grant for ACOP registration
2026-03-26 – The GTN-P together with the IPA are pleased to invite applications for financial support to attend the ACOP 2026 and the GTN-P workshop. Through the GTN-P/IPA Grant, we aim to support motivated Early Career Researchers who have an accepted contribution (oral or poster presentation) at ACOP. [read more ...]
GTN-P has officially been accredited as a GCOS Affiliated Network
2026-03-23 – The World Meteorological Organization (WMO) has announced that GTN-P has officially been accredited as a GCOS Affiliated Network, recognizing GTN-P's scientific value, data quality, and long-term sustainability. The accreditation highlights GTN-P's vital contribution to tracking permafrost temperature and active layer dynamics, both of which are key indicators of climate change.[read more ...]