# Archive/proxy # Tree ring #-------------------- # Contribution Date # Date: 2012-03-13 13:30:33 #-------------------- # Title # Study Name: Forfjorddalen 2 Norway Tree ring Ring width #-------------------- # Investigators: #-------------------- # Description and Notes #-------------------- # Publication # Citation: Kirchhefer, Andreas J. # Journal Name: The Holocene # Published Title: Reconstruction of summer temperatures from tree-rings of Scots pine (Pinus sylvestris L.) in coastal northern Norway # Published Date: 2001 # DOI: 10.1191/095968301670181592 # Abstract: At the coast of northern Norway, 69°N, tree-ring chronologies from Scots pine (Pinus sylvestris L.) were constructed at Forfjorddalen in the Vesterålen archipelago (AD 1358-1992), Stonglandseidet on Senja (AD 1548-1994) and Vikran near Tromso (AD 1700-1992). All chronologies reflect July-August temperatures. At the most northern site, Vikran, the response was more confined to July temperatures, resulting in a strong tree-ring and climate signal. The chronology from a steep, south-facing slope at Stonglandseidet showed signs of drought sensitivity. At the most oceanic locality, Forfjorddalen, mild winters appear to suppress tree growth on a decadal scale. Growth variations were consistent between the three sites for 1700-1910 but the amount of low-frequency variability decreased towards the most oceanic site. The seventeenth century, the coldest period of the ‘Little Ice Age’, experienced three cycles of summer temperatures, with minima around 1605, 1640 and 1680. An extended warm period occurred around 1475-1540. Temperature reconstruction showed secular trends similar to those observed east of the Scandes, but differed in the magnitude and timing of the extremes. At Forfjorddalen, there was no evidence of pine regeneration around 1575-1650. The latter site is likely to have been affected by logging activity in the seventeenth century. #---------------------- # Science Keywords: PAGES 2k Network, PAGES Arctic 2k, Arctic 2k, temperature, annual resolution #-------------------- # Site Name # Region: Scandinavia # Country: Norway # Northmost Latitude: 69.08 # Southmost Latitude: 69.08 # Eastmost Longitute: 17.22 # Westmost Longitute: 17.22 # Elevation: 145 #------------------ # Data Collection # Core Name: Forfjorddalen 2 # First Year: 877 # Last Year: 1994 # Time Unit: AD #------------------ # Searchable Controlled Keywords # >tree-ring>width>ring width #---------------- # Variables # age_AD Age (years AD) # trsgi Tree Ring Standardized Growth Index # age_AD trsgi 1994 943 1993 819 1992 702 1991 938 1990 1231 1989 796 1988 1082 1987 994 1986 926 1985 1662 1984 1119 1983 998 1982 753 1981 875 1980 1333 1979 1055 1978 875 1977 851 1976 621 1975 650 1974 860 1973 1067 1972 1116 1971 901 1970 1089 1969 964 1968 666 1967 543 1966 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