noaa-tree-13179 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2025-06-09 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Forfjorddalen, Norway 1000 Year Tree Ring d13C Cloud Cover Reconstruction 2012-07-31 publication doi:10.25921/zvgf-n290 noaa-tree-13179 NCEI DSI 1200_02 NCEI DSI 1200_01 Young, G.H.F. originator Young, G.H.F. author McCarroll, D. originator McCarroll, D. author Loader, N.J. originator Loader, N.J. author Gagen, M.H. originator Gagen, M.H. author Kirchhefer, A.J. originator Kirchhefer, A.J. author Demmler, J.C. originator Demmler, J.C. author NOAA National Centers for Environmental Information publisher tableDigital This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Tree Ring. The data include parameters of tree ring with a geographic location of Norway, Scandanavia. The time period coverage is from 960 to -51 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Tree ring data from the International Tree Ring Data Bank and World Data Center for Paleoclimatology archives. Most data sets include raw treering measurements (most are annual ring width, with some collections of earlywood or latewood width or wood density), plus chronologies (standardized growth indices for a site compiled from multiple treering samples). Reconstructions of climate variables are included with some of these data sets. Each data type is stored in a separate data file; the data type is coded into the file name. For details please see: http://www.ncei.noaa.gov/products/paleoclimatology/tree-ring completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-tree.png Paleoclimatology - Tree Ring PNG Earth Science > Climate Indicators > Paleoclimate Indicators > Biological Records > Tree Rings Earth Science > Paleoclimate > Land Records > Tree Rings theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > tree ring earth science > paleoclimate > climate reconstructions|tree ring earth science > paleoclimate > tree ring earth science > paleoclimate > tree ring earth science > paleoclimate > tree ring earth science > paleoclimate > climate reconstructions|tree ring earth science > paleoclimate > tree-ring > carbon isotopes theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Arctic Oscillation (AO) Little Ice Age (LIA) Other Hydroclimate Reconstruction PISY Pinus sylvestris L. Scots pine Scotch pine theme What: number of samples; Material: null What: cloud cover; Material: null What: delta 13C; Material: latewood alpha cellulose What: age; Material: null What: delta 13C; Material: latewood alpha cellulose What: cloud cover; Material: null theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Continent > Europe > Northern Europe > Scandanavia > Norway > Forfjorddalen13C > LATITUDE 68.6 > LONGITUDE 15.7333 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Young, G.H.F.; McCarroll, D.; Loader, N.J.; Gagen, M.H.; Kirchhefer, A.J.; Demmler, J.C. (2012-07-31): NOAA/WDS Paleoclimatology - Forfjorddalen, Norway 1000 Year Tree Ring d13C Cloud Cover Reconstruction. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/zvgf-n290. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose otherRestrictions None otherRestrictions 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. Changes in atmospheric circulation and the Arctic Oscillation preserved within a millennial length reconstruction of summer cloud cover from northern Fennoscandia 2012 publication Young, G.H.F., D. McCarroll, N.J. Loader, M. Gagen, A.J. Kirchhefer, J.C. Demmler author Climate Dynamics publisher https://doi.org/10.1007/s00382-011-1246-3 HTTPS Web Browser Associated Reference published 2012 Young, G.H.F., D. McCarroll, N.J. Loader, M. Gagen, A.J. Kirchhefer, J.C. Demmler, 2012: Changes in atmospheric circulation and the Arctic Oscillation preserved within a millennial length reconstruction of summer cloud cover from northern Fennoscandia. Climate Dynamics, 39, 495-507, 10.1007/s00382-011-1246-3 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 990 CE to 2001 CE; Date Range: 960 cal yr BP to -51 cal yr BP; 15.7333 15.7333 68.6 68.6 Study Coordinates 68.6 15.7333 990 2001 STUDY NOTES: A 1010-year stable carbon isotope chronology from Forfjorddalen on the Vesterålen archipelago of northwestern Norway was produced from Pinus sylvestris L. (Scots Pine). Individual isotope series were corrected for changes in, the isotopic ratio and concentration of, atmospheric CO2 over the industrial period (since AD1850). The mean isotope series was calibrated against observed percentage cloud cover from Tromsø, over the period AD1890-2001 (R2, 0.46). The mean isotope series was then scaled to Tromsø cloud cover to produce a 1010-year reconstruction of percentage cloud cover. See Young et al. (2010; 2012) for full details. Forfjorddalen, Forfjord, Vesterålen, Northern Norway: 68°48'N, 15°44'E IITRDB005 ABSTRACT SUPPLIED BY ORIGINATOR: Cloud cover currently represents the single greatest source of uncertainty in General Circulation Models. Stable carbon isotope ratios (d13C) from tree-rings, in areas of low moisture stress, are likely to be primarily controlled by photosynthetically active radiation (PAR), and therefore should provide a proxy record for cloud cover or sunshine; indeed this association has previously been demonstrated experimentally for Scots pine in Fennoscandia, with sunlight explaining ca 90% of the variance in photosynthesis and temperature only ca 4%. We present a statistically verifiable 1011-year reconstruction of cloud cover from a well replicated, annually-resolved d13C record from Forfjord in coastal northwestern Norway. This reconstruction exhibits considerable variability in cloud cover over the past millennium, including extended sunny periods during the cool seventeenth and eighteenth centuries and warm cloudy periods during the eleventh, early fifteenth and twentieth centuries. We find that while a generally positive relationship persists between sunshine and temperature at high-frequency, at lower (multi-decadal) frequencies the relationship is more often a negative one, with cool periods being sunny (most notably the Little Ice Age period from 1600 to 1750 CE) and warm periods more cloudy (e.g. the mediaeval and the twentieth century). We conclude that these long-term changes may be caused by changes in the dominant circulation mode, likely to be associated with the Arctic Oscillation. There is also strong circumstantial evidence that prolonged periods of high summer cloud cover, with low PAR and probably high precipitation, may be in part responsible for major European famines caused by crop failures. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/zvgf-n290 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/13179 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/tree-ring HTTPS Information NCEI Tree Ring Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/treering/isotope/europe/norway/forfjorddalen2012-noaa.txt HTTPS Download NCEI Direct Download Direct download links for dataset files. download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21