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TitlePermafrost
AuthorRomanovsky, V E; Smith, S L; Christiansen, H H; Shiklomanov, N I; Streletskiy, D A; Drozdov, D S; Oberman, N G; Kholodov, A L; Marchenko, S S
SourceArctic Report Card 2013; by Jeffries, M O (ed.); Richter-Menge, J A (ed.); Overland, J E (ed.); 2013 p. 131-136
Year2013
Alt SeriesEarth Sciences Sector, Contribution Series 20130260
PublisherNOAA Climate Program Office
Documentbook
Lang.English
Mediapaper; on-line; digital
File formathtml
ProvinceNunavut; Northwest Territories
NTS120; 107; 106; 96; 95
AreaAlert; Mackenzie River Valley; Norman Wells; Wrigley; United States; Canada; Russian Federation; Norway
Lat/Long WENS 180.0000 -180.0000 84.0000 60.0000
Subjectssurficial geology/geomorphology; permafrost; freezing ground; ground ice; ground temperatures; climate change
Illustrationslocation maps; plots; tables
ProgramEssential Climate Variable Monitoring, Climate Change Geoscience
LinksOnline - En ligne
AbstractIn 2013, new record high temperatures at 20 m depth were measured at two northernmost permafrost observatories on the North Slope of Alaska, in the Brooks Range, Alaska, and in the High Canadian Arctic, where measurements began in the late 1970s.
During the last fifteen years (1998-2012), active-layer thickness has increased in the Russian European North, northern East Siberia and Chukotka.
In 2012 in west Siberia, the active-layer thickness was the greatest observed since 1996, and in the Russian European North it was the greatest observed since measurements began in 1998.
Summary(Plain Language Summary, not published)
This article is the permafrost contribution to the Arctic Report Card, an annual peer-reviewed report providing clear, reliable information on the current state of the Arctic environmental system relative to historical records. Information acquired from the Global Terrestrial Network for Permafrost (to which Canada contributes) indicates that permafrost continues to warm across the circumpolar region and in some regions such as the Canadian High Arctic the permafrost temperatures are the highest they have been in the past 3-4 decades. Since permafrost is an important component of the northern landscape, knowledge of how conditions are changing is essential for planning adaptation to a changing climate and to support decisions regarding northern development.
GEOSCAN ID293106