Metadata for the Circumpolar Active Layer Monitoring (CALM) Network The complete metadata file will contain information for the categories listed below. The present version is limited to site location, responsible individual(s) observations, and site history. Additional details are available in the GGD inventory under specific sites. Site name, location Latitude and longitude: Responsible individual(s): Observation/Instrumentation (depths): Site history: (year started; changes): Elevation (meters): Slope/Aspect: Landform: Soil: Vegetation: Closest climate station (lat./long.): Austria/Russia A1 Franz Josef Land 81o 04' N; 56o 18' E Responsible individual(s): Michael Gottfried, Institute of Plant Physiology, University of Vienna Observation/Instrumentation (depths): probing on 50 m grid Site history: grid established in 1996 as part of ITEX Canada C1 Alexandria Fiord, Ellesmere Island 79o 54' N; 75o 54' W Responsible individual(s): Greg Henry, University of British Columbia, Vancouver Observation/Instrumentation (depths): probing on 100m grid Site history: grid established in 1996 as part of ITEX C2 Truelove Lowland, Devon Island 75o 33' N; 84o 40' W Responsible individual(s): Larry Bliss, University of Washington, Seattle <206 543 1942> Observation/Instrumentation (depths): probing on 60 m grid Site history: grid established in 1995 as part of ITEX but not continuing; prior measurements from 1970s available from nearby sites C3 North Head, Mackenzie Valley 69o 43' N; 134o 27' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor; Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; air and ground temperature mast Site history: thaw tube installed 1990 C4 Taglu, Mackenzie Valley 69o 22' N; 134o 57' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; 8 sensor, 30 m ground temperature cable; air and ground temperature mast. Site history: thaw tube installed 1991 C5 Lousy Point, Mackenzie Valley 69o 13' N; 134o 17' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; 11 sensor, 30 m temperature cable; air and ground temperature mast. Site history: thaw tube installed 1990 C6 Parsons Lake, Mackenzie Valley 68o 58' N; 133o 33' W Responsible Individual(s): Charles Tarnocai, Agriculture and Agri-Food Canada, Ottawa Observation/Instrumentation (depths): single point probe, 7 sensor soil temperatures to 1.5 m. Site history: data since 1989 C7 Reindeer Depot, Mackenzie Valley 68o 01' N; 134o 08' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; air and ground temperature mast Site history: thaw tube installed 1990 C8 Rengleng River, Mackenzie Valley 67o 48' N; 134o 05' W Responsible Individual(s):F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube ; air and ground temperature mast Site history: thaw tube installed 1991 C9 Mountain River, Mackenzie Valley 65o 40' N; 128o 50' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; time domain reflectometry probes to 60, 90, 120 cm; air and ground temperature mast Site history: thaw tube installed 1991 C10 Pump Station, Mackenzie Valley 65o 17' N; 126o 53' W Responsible Individual(s): Charles Tarnocai, Agriculture and Agri-Food Canada, Ottawa Observation/Instrumentation (depths): single point probe; 7 sensor soil temperatures to 1.5 m. Site history: data since 1986 C11 Norman Wells, Mackenzie Valley 65o 12' N; 126o 28' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; time domain reflectometry probes to 60, 90, 120 cm; air and ground temperature mast Site history: thaw tubes installed in 1991 C12 Great Bear River, Mackenzie Valley 64o 55' N; 125o 35' W Responsible Individual(s): Charles Tarnocai, Agriculture and Agri-Food Canada, Ottawa Observation/Instrumentation (depths): single point probe, 7 sensor soil temperatures to 1.5 m. Site history: data since 1986 C13 Ochre River, Mackenzie Valley 63o 28' N; 123o 42' W Responsible Individual(s): F. Mark Nixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; time domain reflectometry probes to 60, 90, 120 cm; 7 thermistor string to 1.8 m; 7 sensor soil temperature and potential to 48 cm; air and ground temperature mast Site history: thaw tubes installed in 1992 C14 Willowlake River, Mackenzie Valley 62o 42' N; 123o 04' W Responsible Individual(s): F. Mark Nixon, Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; time domain reflectometry probes to 60, 90, 120 cm; 7 thermistor string to 4.3 m; 7 sensor soil temperature and potential to 48 cm; air and ground temperature mast Site history: thaw tubes installed in 1992 C15 Fort Simpson, Mackenzie Valley 61o 53' N; 121o 36' W Responsible Individual(s): F. Mark Dixon and Allen E. Taylor, Geological Survey of Canada, Ottawa and Observation/Instrumentation (depths): thaw tube; time domain reflectometry probes to 60, 90, 120 cm; 7 thermistor string to 1.5 cm; 7 sensor soil temperature and potential to 48 cm; air and ground temperature mast Site history: thaw tubes installed in 1992 C16 Lake Hazen, Baffin Island 81o 49' N; 71o 23' W Responsible Individual(s): Charles Tarnocai, Agriculture and Agri-Food Canada, Ottawa Observation/Instrumentation (depths): single point probe; ground temperature Site history: site initiated in 1995 C17 Sheldrake River, Quebec 56o 38' N; 76o 06' W Responsible individual(s): Michael Allard and Janusz Frydecki, Laval University, Quebec City and Observation/Instrumentation (depths): Campbell CR-10 data logger with 11 thermistor cable to 2.1 m Site history: data from 1986 C18 Tanquary Fiord, Ellesmere Island 81o 24' N; 76o 42' W Responsible individual(s): Barry Troke, Warden, Ellesmere Island National Park Reserve Observation/Instrumentation (depths): probing 100 m grid; thaw tube at point 6 on grid Site history: grid established in 1997 C19 Eureka; Ellesmere Island 80o 01' N; 85o 45' W Responsible individual(s): Antoni Lewkowicz, Department of Geography, University of Ottawa Observation/Instrumentation (depths): probing 1000 m grid; thaw tube at point 97 on grid Site history: grid established in 1997 C20 Baker Lake, NWT 64o 10' N; 95o 30' W Responsible individual(s): Josef Svoboda, University of Toronto, Mississauga, ; Margo Burgess, Geological Survey of Canada, Ottawa < burgess@nrcan.gs.ca> and Orin Durey Observation/Instrumentation (depths): four 3 m boreholes lined with a plastic ASBS 4" pipe, extending 50-60 cm above the ground. A 2"ABS pipe contains a 5 m long professional cable with 10 thermistor sensors at 50 cm sections. The cable is immersed in silicon oil.; readings are biweekly with a Fluke multimeter Site history: readings began in fall 1997 as part of ITEX China CN1 Yitulihe; Northeast China 50o 56' N; 121o 20' E Responsible individual(s): Liu Futao Observation/Instrumentation (depths):ground temperature Site history: site established in1996 Denmark/Greenland G1 ZEROCALM 1, Zackenberg 74o 28' N; 20o 30' W Responsible individual(s): Hanne Hvidtfeldt Christiansen, University of Copenhagen Observation/Instrumentation (depths): 100 m grid; Meteorological station about 25 m south of the grid includes among other parameters ground temperature at 10 depths from 0 to 150 cm, air temperature at 2 and 7.5 m above terrain, and the amount of precipitation from mid August 1995 Site history: grid established 1996; site in close proximity to ITEX sites G2 ZEROCALM 2, Zackenberg 74o 28' N; 20o 30' W Responsible individual(s): Hanne Hvidtfeldt Christiansen, University of Copenhagen Observation/Instrumentation (depths): 100 x150 m grid; see G1 for other observations Site history: grid established 1996 G3 Disko Island 69o 15' N; 53o 30' W Responsible individual(s): Hanne Hvidtfeldt Christiansen, University of Copenhagen Observation/Instrumentation (depths): 100 m grid with Tinytags logger f or soil temperature at 0.5; 30; and 74 cm depth at the center of the grid with measurement every 3 hours since July 1997 Site history: grid started July 1997; ITEX sites in area Kazakstan K1 Zhusalykezen Mountain Pass, Cosmostation, Northern Tien Shan 43o 05' N; 76o 58' E Responsible individual(s): Sergei S. Marchenko, Institute of Geography, Kazakstan Academy of Sciences, Almaty Observation/Instrumentation (depths):deep borehole with Stowaway loggers installed at 4.40; 4.00; 3.00; 2.00; 1.00 m in cased hole and at 2 m above surface for air temperature Site history: Borehole instrumented in October 5, 1997. Poland/Svalbard P1 Calypsostranda, Recherche Fjord, Wedel Jarlsberg Land,, Svalbard 77o 34' N; 14o 30' E Responsible individual(s): Janina Repelewska-Pekala, Department of Geomorphology, Maria Curie-Sklodowska University, Lublin Observation/Instrumentation (depths): maximum probe values reported from a series of plots; some measurements with the Danilin's frostmeter; shallow soil temperature data available Site history: data since 1986 Russia R1 Nadym, West Siberia 65o 20' N; 72o 55' E Responsible individual(s): N.G. Moskalenko, Institute of Earth Cryosphere, Moscow, Observation/Instrumentation (depths): 100 m grid, Stowaway data loggers Site history: grid established 1996; annual thaw data available from nearby transect since 1972 as well as some soil temperatures and moisture. R2 Ayach-Yakha, Vorkuta 67o 35' N; 64o 11' E Responsible individual(s): Galena Mazhitova and Nikolai Kakunov, Institute of Biology, Syktyvkar, Observation/Instrumentation (depths): probing 100 m ; Stowaway data loggers installed at 0, 15, 50, and 70 cm on grid; geocryological data exists for surrounding area since 1974 Site History: grid established 1996 R3 Marre Sale, Yamal Peninsula 69o 43' N; 66o 45' E Responsible individual(s): A.A. Vasiliev, Institute of Earth Cryosphere, Moscow Observation/Instrumentation (depths): probing from 1000 m grid; Stowaway data loggers; geocryological station data available since 1978. Site history: grid established 1995 R4 Parisento, Gydan Peninsula 70o 07' N; 75o 35' E Responsible individual(s): N.G. Moskalenko, Institute of Earth Cryosphere, Moscow Observation/Instrumentation (depths): 1000 m grid; geocryological station data available since 1985 Site history: grid established in 1992. R5 Vaskiny Dachy, Yamal Peninsula 70o 17' N; 68o 54' E Responsible individual(s): Marina Leibman, Institute of Earth Cryosphere, Moscow Observation/Instrumentation (depths): 1000 m grid ; geocryological measurements including shallow boreholes and temperatures, Stowaway loggers at 3, 15, 25, 50, 75, 100, and 200 cm depths. Site history: grid established in 1993; thaw data since 1989 R6 Labaz Lake,Taimyr Peninsula 72o 23' N; 99o 30' E Responsible individual(s): Martin Sommerkorn, Institute of Polar Ecology, Kiel, Germany Observation/Instrumentation (depths): probing on 100 m grid Site history: grid established in 1994 as ITEX site; program discontinued after 1995 R7 Levinson Lessing Lake, Taimyr Peninsula 74o 32' N; 98o 36' E Responsible individual(s): Julia Boike, Alfred Wegener Institute for Polar and Marine Research, Potsdam Observation/Instrumentation (depths): probing on 100 m grid; soil temperature logger and TDR data from nearby sites Site history: grid established 1994 and continued through 1996; program discontinued R8 Tiski, Lena Delta 71o 35' N; 128o 47' E Responsible individual: Larry Hinzman, University of Alaska-Fairbanks and Yuji Kodama and Sergei K. Ryabchuk, Polar Geocosmophysics Observatory, 678400 Republic Sahka-Jakutia Observation/Instrumentation (depths): probing on 1000 m grid and nearby soil temperature logger Site history: grid established in 1997 in cooperation with GAME R9 Cape Rogozhny; Chukotka 64o 47' N; 176o 58' E Responsible individual(s): Anatoly Kotov, Chukotka Research Center, Anadyr; and Volodya Razzhivin, Komarov Botanical Institute, St. Petersburg; Observation/Instrumentation (depths): probing on 100 m grid; Stowaway loggers for soil temperatures Site history: grid established in 1994 by Kotov; ITEX study initiated in 1993 by Molau and continued by Razzhivin. R10 Upper Kargoplgyno River, Chukotka 64o 05' N; 177o 04' E Responsible individual(s): Anatoly Kotov, Chukotka Research Center, Anadyr Observation/Instrumentation (depths): probing on 100 m grids Site History: grids established in typical tundra and in comparable area burned by tundra fire in 1991. Thaw measured in 1992-1994; but site not revisited since due to logistic constraints. R11 Mt. Dionisy, Chukotka 64o 34' N; 177o 12' E Responsible individual(s): Volodya Razzhivin, Komarov Botanical Institute, St. Petersburg Observation/Instrumentation (depths): probing on 100 m grid; Stowaway loggers for soil temperatures Site history: grid established 1996 as part of ITEX. R12 Kuropatochya River, Kolyma 70o 55' N; 156o 38' E Responsible individual(s): David Gilichinsky, Victor Sorokovikov, Institute of Soil Science, Pushchino Observation/Instrumentation (depths): site VA has air temperatures and borehole temperatures to 15 m (2 hour helicopter) Site history: two 100 m grids established in 1996 (VA right bank; VB floodplain) and combined into one 1000 m grid in 1997. R13 Cape Chukochii, Kolyma 70o 05' N; 159o 59' E Responsible individual(s): David Gilichinsky, Victor Sorokovikov, Institute of Soil Science, Pushchino Observation/Instrumentation (depths): probing on 1000 m grid; geocryological data for many years Site history: 1000 m grid established in 1997 R14 Chukochya River, Kolyma 69o 10' N; 158o 04' E Responsible individual(s): David Gilichinsky, Vladimir Ostroumov, Institute of Soil Science, Pushchino Observation: 100 m grid expanded to 1000 m grid in 1997; air temperatures and borehole temperatures to 25 m (1.5 helicopter hour) Site history: started 1996 as Site VII R15 Konkovaya River, Kolyma 69o 08' N; 158o 06' E Responsible individual(s): David Gilichinsky, Vladimir Ostroumov, Institute of Soil Science, Pushchino Observation/Instrumentation (depths): 100 m grid expanded to 1000 m; air temperature and borehole temperatures to 50 m (1 hour helicopter) Site history: started 1996 as Site VI R16 Segodnya pingo, Kolyma 69o 05' 30" N; 158o 54' E David Gilichinsky, D.G. Fyodorov-Davydov, Institute of Soil Science, Pushchino Observation/Instrumentation (depths): 100 m grid near Segodnya pingo in the central part of Khalarchinskaya sandy plain tundra (1 hour helicopter) Site history: started 1996 as Site I R17 Khalarchinskaya tundra, Kolyma 68o 49' N; 161o 02' E Responsible individual(s): David Gilichinsky, Victor Sorokovikov, D.G. Fyodorov-Davydov, Institute of Soil Science, Pushchino Observation/Instrumentation (depths): three 100 m grid distributed on a profile in the vicinity of Akhmelo Lake in the eastern part of Khalarchinskaya sandy plain tundra (on the left bank of Kolyma River); borehole temperatures to 15 m (1 hour from Chersky by boat) Site history: grids started 1996 as IIA Akhmelo-channel (68o 48' 50''N; 160o 59' 20''E); IIB Lake Glukhoe (68o 48' 00''N; 160o 57' 40''E); IIC.Lake Akhmelo (68o 49' 30''N; 161o 02' 00''E); consolidated into 1000 m grid in 1997 R18 Mt Rodinka, Kolyma 68o 45' N; 161o 32' E Responsible individual(s): Sergei Zimov, Sergei Davydov, Northeastern Science Station, Chersky Observation/Instrumentation (depths): probing on 1000 m grid Site history: grid established 1997 R19 Panteleekha River, Kolyma 68o 25' N; 161o 13' E Responsible individual(s): Sergei Zimov, Sergei Davydov, Northeastern Science Station, Chersky Observation/Instrumentation (depths): probing on 100 m grid (0.5 hour by boat from Chersky) Site history: grid established in 1996 as Site VI right bank R20 Malchilovskaya Channel, Kolyma 68o 25' N; 161o 13' E Responsible individual(s): D.G. Fyodorov-Davydov, Victor Sorokovikov, Institute of Soil Science, Pushchino Observation/Instrumentation (depths): probing of 100 m grid (one hour by boat from Chersky) Site history: grid established in 1996 as Site III right bank; site is in the proposed Pleistocene Park Sweden/Svalbard S1 Kapp Linne, Svalbard 78o 03' N; 13o 37' E Responsible individual(s): Jonas Akerman, University Lund, Observation/Instrumentation (depths): probing on 10, 100 m plots; soil temperature logger at one site to 7 meters. Site history: probing started in 1972 and continues to present; starting in 1994 ITEX sampling employed. S2 Abisko area, Sweden 68o 20' N; 18o 50' E Responsible individual(s): Jonas Akerman, University Lund, Observation/Instrumentation (depths): probing on 10 plateau palsa plots along 120 km east-west transect; some soil temperature available. Site history: probing started in 1978 and continues to present; starting in 1994 ITEX sampling employed; one additional site added in 1984. Switzerland CH1 Murtel-Corvatsch, Alps 46o 26' N; 9o 50' E Responsible individual(s): Dani Vonder Muehll, Martin Hoelzle, and Wilfried Haeberli , and Observation/Instrumentation (depths): ground temperatures in borehole well and mircometeorological station; NTC thermistors; manual temperature readings with digital multimeter; Campbell CR10 data logger; with sensors: 0.6, 1.6, 2.6, 3.6, 4.6, 5.6, 6.6, 7.6, 8.6, 9.6, 10.6, 11.6, 12.6, 13.6, 14.6, 15.6, 16.6, 17.6, 18.6, 19.6, 20.6, 21.6, 23.6, 24.6, 25.6, 26.6, 27.6, 29.6, 30.6 meters Site history: measurements started in 1987. United States/Alaska U1 Barrow 71o 19' N; 156o 36' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid; data logger for soil temperatures at depths of 1, 8, 15, 22, 29, 50, 75, and 100 cm) and moisture by both Hinkel and Nelson; annual spring snow survey Site history: permanent grid installed in 1993; initial probing started in 1991; soil temperature loggers since 1993; ITEX sites co-located U2 Barrow; CRREL Plots 71o 19' N; 156o 35' W Responsible individual(s): Jerry Brown, ; F.E. Nelson, University of Delaware, Newark ; Observation/Instrumentation (depths): probing on 42, 10 m plots; consistent record for 20 plots. Site history: 1962-68, 70, 1991 to present U3 Atqasuk 70o 27' N; 157o 24' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid; data loggers for soil temperature Site history: grid established in spring 1995; ITEX sites co-located U4 West Dock, Prudhoe Bay 70o 22' N; 148o 33' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 100 m grid; soil temperature to 83 cm, ground temperature borehole to 56 m Site history: annual borehole measurements since 1983, soil temperature since 1986; new logger in 1997; probing since 1996 U5 West Dock, Prudhoe Bay 70o 22' N; 148o 34' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid; micrometeorological station and soil temperature profile Site history: grid established in 1993 by D.A. Walker, University of Colorado; probing by several groups over the period including Kane and Hinzman and more recently Nelson et al. U6 Deadhorse, Prudhoe Bay 70o 10' N; 148o 28' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 100 m grid; soil temperature to 99 cm, ground temperature borehole to 60 m Site history: annual borehole measurements since 1983; soil temperature since 1986; new logger in 1997; probing since 1996 U7 Betty Pingo, Prudhoe Bay 70o 17' N; 148o 52' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid; micrometeorological station and soil temperature profiles since 1994 by University of Alaska (Doug Kane and Larry Hinzman) Site history: grid established in 1993 by D. A. Walker, University of Colorado; probing by several groups over the period including Kane and Hinzman and more recently Nelson et al. U8 Franklin Bluff, Dalton Highway 69o 41' N; 148o 43' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 100 m grid; soil temperature to 99 cm, ground temperature borehole to 60 m Site history: annual borehole measurements since 1983; soil temperature since 1986; new logger in 1997; probing since 1996 U9 Happy Valley, Dalton Highway 69o 10' N; 148o 50' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 100 m grid; soil temperatures; ground temperature borehole to 40 m Site history: annual borehole measurements since 1983, probing since 1996 U10 Happy Valley, Dalton Highway 69o 06' N; 148o 30' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid; micrometeorological station and soil temperatures (at depths of 1, 8, 15, 22, 29, 50, 75 and 100 cm) by both Hinkel and Nelson Site history: grid established in 1993 by D. A. Walker, University of Colorado; probing by Nelson et al.; soil temperature logger since 1993 U11 Imnavait Creek, Dalton Highway 68o 30' N; 149o 30' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid; micrometeorological station and soil temperature profiles since 1985 by University of Alaska (Doug Kane and Larry Hinzman) Site history: grid established in 1988 by Carl Benson, University of Alaska, as part of R4D program; probing by several groups over the period including Kane and Hinzman and more recently Nelson et al. U12 Toolik, Dalton Highway 68o 37' N; 149o 36' W Responsible individual(s): F.E. Nelson, University of Delaware, Newark, and Ken Hinkel, University of Cincinnati and Observation/Instrumentation (depths): probing on 1000 m grid Site history: Grid established in 1991 by D.A. Walker, University of Colorado; probing more recently by Nelson et al. U13 Toolik LTER, Dalton Highway 68o 37' N; 149o 36' W Responsible individual(s): George Kling; University of Michigan, Ann Arbor and Jim Laundre, Marine Biology Laboratory and Observation/Instrumentation (depths): probing along transect on July 2 and Aug 11; loggers for soil temperature to 40 cm depth since 1991. Site history: probing started in 1990 as basic Toolik Lake LTER program; ITEX sites nearby U14 Galbraith Lake,Dalton Highway 68o 29' N; 149o 30' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 100 m grid; soil temperature to 99 cm, ground temperature borehole to 75 m Site history: annual borehole measurements since 1985; soil temperature logger started 1997; probing since 1996 U15 Chandalar Shelf, Dalton Highway 68o 04' N; 149o 35' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 30 m grid, soil temperature to 88 cm, ground temperature borehole to 61 m Site history: annual borehole measurements since 1985; soil temperature logger started 1997; probing since 1996 U16 Old Man, Dalton Highway 66o 27' N; 150o 37' W Responsible individual(s): Tom Osterkamp and Vladimir Romanovsky, University of Alaska-Fairbanks and Observation/Instrumentation (depths): probing on 100 m grid, ground temperature borehole to 63 m Site history: annual borehole measurements since 1983; probing since 1996 U17 Wickersham Dome, Elliott Highway 65o 16' N; 148o 03' W Responsible individual(s): Leslie Viereck, Fairbanks Observation/Instrumentation (depths): 10 probes points on a transect Site history: started in 1971; weather station and soil temperature and weekly probing 1971-1979; since annual probing only U18 Bonanza Creek LTER, Fairbanks 64o 45' N; 148o 00' W Responsible individual(s): Leslie Viereck, Fairbanks Observation/Instrumentation (depths): Numerous sites and plots with thaw and frost data; weekly probes at 10 points on transect near weather station; probing, also 20 points adjacent to vegetation plots in a control, soil temperatures at 5, 10, 20, 50, 100, and 200 cm; only data from the floodplain permafrost site is reported for CALM; reduced data for all sites available on WWW site. Site history: LTER site established 1987; active layer probing began in 1990; soil and air temperature measurements were started in 1988 U19 Pearl Creek, Fairbanks 64o 54' N; 147o 48' W Responsible individual(s): Leslie Viereck, Fairbanks Observation/Instrumentation (depths): three thaw tubes, probe line of 10 points once a year close to frost tubes; each tube calibrated with 3 probes within 15 cm of tube Site history: thaw tubes installed in 1968; active layer probing and snow depth measurements started in 1968; air and soil temperature measurements started in 1990. -end of CALM metadata-