noaa-lake-5449 Folgefonna, Western Norway 6,000 Year Glacial Lake Sediment Data and ELA Reconstruction Bakke, J.; Lie, O.; Nesje, A.; Olaf Dahl, S.; Paasche, O. Folgefonna, Western Norway 6,000 Year Glacial Lake Sediment Data and ELA Reconstruction 2006-03-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/5449 Investigator J. Bakke Investigator O. Lie Investigator A. Nesje Investigator S. Olaf Dahl Investigator O. Paasche earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,coarse silt earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,very fine sand earth science paleoclimate paleolimnology organic matter,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,the samples were ignited for 1 h at 550C earth science paleoclimate climate reconstructions|paleolimnology age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,x-ray particle size analysis,N,x10-5 units earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,medium silt earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,fine silt earth science paleoclimate climate reconstructions|paleolimnology equilibrium line altitude,null,null,meter,null,climate reconstructions|paleolimnology,null,null,N,lake dry bulk density earth science paleoclimate climate reconstructions|paleolimnology depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,very coarse silt earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,very fine silt earth science paleoclimate paleolimnology grain size class,sediment,null,percent,null,paleolimnology,null,x-ray particle size analysis,N,clay earth science paleoclimate paleolimnology physical properties geoscientificInformation Glaciers and Ice Sheets Reconstruction PAGES 2k Network PAGES Arctic 2k 5932 cal yr BP 19 cal yr BP Complete 60.25 60.35 6.45 6.98 490 938 Continent Europe Northern Europe Scandanavia Norway Dravladalsvatn>LATITUDE 60.25>LONGITUDE 6.45 Continent Europe Northern Europe Scandanavia Norway Vassdalsvatn>LATITUDE 60.35>LONGITUDE 6.98 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Bakke, J., O. Lie, A. Nesje, S. Olaf Dahl, and O. Paasche. 2005 The Holocene 15 2 161-176

The maritime plateau glacier of northern Folgefonna in western Norway has a short (subdecadal) response time to climatic shifts, and is therefore well suited for reconstructing high-resolution glacier fluctuations. The reconstruction presented here is based on physical parameters of glaciolacustrine sediments retrieved from two glacier-fed lakes and a peat bog north of the ice cap. Bulk density and modelled glacier net mass balance for the last 200 years show a remarkably similar pattern, where maximum sediment yield lags the glacier net mass balance by~10 years. The record of glacier variations has been transferred into an equilibrium- line altitude (ELA) variation curve. Glaciers respond primarily to changes in summer temperature and winter precipitation. At present there is a high correlation between the North Atlantic Oscillation (NAO) index and measured (since the early 1960s) net mass balance on maritime glaciers in western Norway (r= ~0.8). Reconstructed glacier variations from maritime western Norway are therefore considered indicative of the strength of the westerly airflow associated with NAO during the Holocene. The early phase of mid-Holocene glacier growth (5200 cal. yr BP) was characterized by gradual glacier expansion culminating in the first Subatlantic glacial event at 2300 cal. yr BP. The climate during the last 2200 years has favoured increased glacier activity at Folgefonna. High-amplitude shifts in ELA may be explained by unstable modes of the westerlies causing significant variability of winter precipitation. During the last 2000 years, Folgefonna expanded and decayed with significant decadal variability. During the latest period of the 'Mediaeval Warm Epoch', Folgefonna advanced. The Neoglacial maximum, however, was reached during the 'Little Ice Age' at AD 1750 and AD 1870. The northern Folgefonna glacial record is compared to other Holocene glacier records in Scandinavia. STUDY NOTES: The two glacial-fed lakes were cored using a modified piston corer taking up to 6 m long cores with diameter 110 mm.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/norway/folgefonna2005.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/norway/folgefonna2005.xls USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11