Permafrost is frozen ground that remains at or below zero degrees Celsius (32 degrees Fahrenheit) for two or more years. It forms in regions where the mean annual temperature is colder than zero degrees Celsius. Permafrost is found beneath about 20 percent of the land in the Northern Hemisphere. It is widespread in the Arctic and in parts of Antarctica. Most of the world’s permafrost has been frozen for 1000s of years and can be up to 1,500 metres (almost 5,000 feet) thick. The layer of ground above permafrost that is subject to annual thawing and freezing is called the active layer.

  • > Chokurdakh Scientific Tundra Station

    Field Sites

    Collaborator in the project until spring 2022 STATION NAME AND OWNER The Chokurdakh Scientific TundraA type of ecosystem in which tree growth is limited by

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  • > Barrow Arctic Research Center/Environmental Observatory

    Field Sites

    STATION NAME AND OWNER The Barrow ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > Toolik Field Station

    Field Sites

    STATION NAME AND OWNER The Toolik Field Station (TFS) belongs to the Institute of ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural

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  • > Western Arctic Research Centre

    Field Sites

    NAME AND OWNER The Western ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as

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  • > Canadian High Arctic Research Station CHARS

    Field Sites

    STATION NAME AND OWNER The Canadian High ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > Arctic Station

    Field Sites

    STATION NAME AND OWNER Owner of the ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the

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  • > Arctic DTU Research Station

    Field Sites

    STATION NAME AND OWNER ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas

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  • > AWIPEV Arctic Research Base

    Field Sites

    STATION NAME AND OWNER AWIPEV ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as

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  • > CNR Arctic Station “Dirigibile Italia”

    Field Sites

    STATION NAME AND OWNER The Italian ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > Tarfala Research Station

    Field Sites

    Twitter @NKirchnerSthlm Facebook @TarfalaResearchStation Webpage www.natgeo.su.se/tarfala-forskningsstation STATION NAME AND OWNER Tarfala Research Station is a centre for glaciological and alpine research at Stockholm University, Sweden,

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  • > Numto Park Station

    Field Sites

    Collaborator in the project until spring 2022 STATION NAME AND OWNER The Numto Park Station belongs to the UNESCO Chair on Environmental Dynamics and Climate

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  • > Stories of Arctic Science

    Publications

    This book contains stories of cutting-edge ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > Siberian tundra eruptions

    News

    INTERACT observer station manager Aleksandr Sokolov in article on methaneA colourless, odourless gas (chemical formula CH4). Some microbesproduce methane. It can also be found in underground

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  • > Summer school at INTERACT partner TSU

    News

    5th International Summer School for Students and Young Scientists — 2018 Natural and human environment of ArcticDefinitions of the Arctic vary according to environmental, geographical,

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  • > Thawing permafrost – a hot topic

    News

    Nunataryuk, part of the EU ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as

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  • > INTERACT Stories of Arctic Science and Stations continue on June 16th at 14-15 CEST

    News

    INTERACT Stories of ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas having

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  • > Permafrost Tunnel Virtual Tour

    News

    INTERACT partner UAF together with other universities and institutes invites the public to join an exclusive tour of an ArcticDefinitions of the Arctic vary according

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  • > APECS-ARICE webinar

    News

    ARICE and APECS are holding a webinar on “Tracing PermafrostPermafrost is frozen ground that remains at or below zero degrees Celsius (32 degrees Fahrenheit) for

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  • > INTERACT – EU Polar Cluster

    News

    Being not only a network of research stations sharing best practices and putting scientists in the field across the ArcticDefinitions of the Arctic vary according

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  • > Join the INTERACT TA Community Meeting on 29th March at 9.30-13.00 CEST

    News

    INTERACT TA User Community: Current ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as

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  • > ISAR call for abstracts

    News

    The Seventh International Symposium on ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as

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  • > Release of 5 AMAP Assessments

    News

    On the 25th of April 5 new AMAPArctic Monitoring and Assessment Programme. One of the working groups of the Arctic Council. Established in 1991. AMAP

    > Read more
  • > INTERACT TA Community Meeting today at 9.30 in UIT

    News

    Please join us today, in person or via Zoom (please find the registration link further down). INTERACT TA User Community: Current Arctic research addressing global

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  • > PhD Position “Permafrost thaw events” available at INTERACT partner AWI

    News

    The PhD candidate will use datasets and field studies to explore how changing water surfaces in the ArcticDefinitions of the Arctic vary according to environmental,

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  • > Call for Registration: Arctic Alaska Vegetation Summer Field Course

    News

    ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas having a high latitude,

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  • > INTERACT TA User Community meeting at ASSW2022: Highlight presentations now available on-line

    News

    The highlight presentations of the INTERACT TA User Community meeting “Current ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives.

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  • > INTERACT part of the EU Arctic Cluster

    News

    The EU ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas having a

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  • > Tune in to the INTERACT Arctic Research Blogs

    News

    When things slow down during the summer holiday season, in arcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some

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  • > Towards an increasingly biased view on Arctic change – paper in Nature Climate Change

    News

    As the Russian invasion of Ukraine continues, the resulting geopolitical tensions may impact our ability to understand ongoing ArcticDefinitions of the Arctic vary according to

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  • > TA User Community

    The Transnational Access User Community consists of all previous and current INTERACT TA/RA Users, as well of those interested about INTERACT Transnational/Remote Access. The TA

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  • > Home

    Welcome to INTERACT – International Network for Terrestrial Research and Monitoring in the Arctic INTERACT is an infrastructure project under the auspices of SCANNET, an

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  • > Alaska, USA

    Alaska is the 49th and largest U.S. state with an area of 1,718,000 km². It is a sparsely populated state with around 731,000 inhabitants (0.4/km2),

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  • > Canada

    Canada´s territory extends from the Atlantic to the Pacific and northward into the ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and

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  • > Transport and communication

    Connecting the Arctic: Transport and Communication ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic

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  • > Collaborations

    APECS The Association of Polar Early Career Scientists (APECS) is an international and interdisciplinary organization for undergraduate and graduate students, postdoctoral researchers, early career faculty

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  • > TA Ambassadors

    INTERACT TA Ambassadors are scientists who have conducted research at INTERACT stations with the support from Transnational Access. TA Ambassadors share knowledge –based on their

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  • > INTERACT goals, societal challenges and TA

    INTERACT is a pan-arctic network of research stations covering all major environmental envelopes/ecozones (A.-F.) in the ArcticDefinitions of the Arctic vary according to environmental, geographical,

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  • > Arctic

    Glossary

    Definitions of the ArcticDefinitions of the Arctic vary according to environmental, geographical, political, cultural and scientific perspectives. Some scientists define the Arctic as areas having

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  • > Palsa mire

    Glossary

    A type of mire (or boggy wetland) complex found in boreal and alpine regions. Palsas are peatPeat is a soil type formed from slowly decomposing vegetation. It is found

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  • > Peat

    Glossary

    PeatPeat is a soil type formed from slowly decomposing vegetation. It is found in wet areas where the lack of oxygen slows the breakdown of

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  • > Pingo

    Glossary

    A frost mound, consisting of an ice core covered with soil and vegetation. They are found in permafrost regions. They are formed when water is naturally injected

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  • > SWIPA

    Glossary

    “Snow, Water, Ice, PermafrostPermafrost is frozen ground that remains at or below zero degrees Celsius (32 degrees Fahrenheit) for two or more years. It forms

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  • > Thermokarst

    Glossary

    A landform that results when ground ice (ice-rich permafrostPermafrost is frozen ground that remains at or below zero degrees Celsius (32 degrees Fahrenheit) for two or

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  • > Thermokarst lake

    Glossary

    A (usually shallow) body of water found in a depression within a thermokarst landform. The water is from thawed permafrostPermafrost is frozen ground that remains at or below

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  • > Tundra

    Glossary

    A type of ecosystemAll the living organisms (including people) in an area as well as its physical environment, functioning together as a unit. An ecosystem

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  • > Climate feedback mechanism

    Glossary

    A change in the climateThe average weather we would expect over a long period of time (seasons, years, decades). Climate varies from place-to-place across the

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