{"action":"create","ckan_id":null,"date_created":"Mon, 30 Mar 2026 22:40:02 GMT","date_finished":null,"harvest_job_id":"5b0af798-1587-4a19-92a1-8a3a273359a8","harvest_source_id":"b1bd9ece-a304-434d-80e3-1800ab1742db","id":"227ef4b8-8449-444f-a6a5-21b90b9ff963","identifier":"https://data.noaa.gov/waf/NOAA/NESDIS/ncei/paleo/iso/xml/noaa-recon-6287.xml","parent_identifier":null,"source_hash":"3efac1e87fb70eb35c7fd08a6a0e1a5c51197e0bbbc6a0a5e1951d1b35c2058a","source_raw":"\r\n \r\n noaa-recon-6287\r\n \r\n \r\n eng; USA\r\n \r\n \r\n utf8\r\n \r\n \r\n dataset\r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n ncei.info@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/contact\r\n \r\n \r\n NCEI Contact Information\r\n \r\n \r\n Information for contacts at NCEI.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA World Data Service for Paleoclimatology\r\n \r\n \r\n Data Center Contact\r\n \r\n \r\n \r\n \r\n \r\n \r\n 828-271-4800\r\n \r\n \r\n 303-497-6513\r\n \r\n \r\n \r\n \r\n \r\n \r\n 325 Broadway, E/NE31\r\n \r\n \r\n Boulder\r\n \r\n \r\n CO\r\n \r\n \r\n 80305-3328\r\n \r\n \r\n USA\r\n \r\n \r\n paleo@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n 2025-07-10\r\n \r\n \r\n ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data\r\n \r\n \r\n ISO 19115-2:2009(E)\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA/WDS Paleoclimatology - Timm et al. 2004 North Atlantic Oscillation Reconstruction\r\n \r\n \r\n \r\n \r\n 2004-07-01\r\n \r\n \r\n publication\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n doi:10.25921/xddm-3x35\r\n \r\n \r\n \r\n \r\n \r\n \r\n noaa-recon-6287\r\n \r\n \r\n \r\n \r\n \r\n \r\n NCEI DSI 1200_02\r\n \r\n \r\n \r\n \r\n \r\n \r\n NCEI DSI 1200_01\r\n \r\n \r\n \r\n \r\n \r\n \r\n Timm, O.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Timm, O.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Ruprecht, E.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Ruprecht, E.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Kleppek, S.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Kleppek, S.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n publisher\r\n \r\n \r\n \r\n \r\n tableDigital\r\n \r\n \r\n \r\n \r\n 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 Climate Reconstruction. The data include parameters of climate reconstructions with a geographic location of North Atlantic Ocean. The time period coverage is from 250 to -28 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.\r\n \r\n \r\n Records of past temperature, precipitation, and other climate variables derived from paleoclimate proxies. Parameter keywords describe what was measured in this data set. Additional summary information can be found in the abstracts of papers listed in the data set citations.\r\n \r\n \r\n completed\r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n ncei.info@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/contact\r\n \r\n \r\n NCEI Contact Information\r\n \r\n \r\n Information for contacts at NCEI.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA World Data Service for Paleoclimatology\r\n \r\n \r\n Data Center Contact\r\n \r\n \r\n \r\n \r\n \r\n \r\n 828-271-4800\r\n \r\n \r\n 303-497-6513\r\n \r\n \r\n \r\n \r\n \r\n \r\n 325 Broadway, E/NE31\r\n \r\n \r\n Boulder\r\n \r\n \r\n CO\r\n \r\n \r\n 80305-3328\r\n \r\n \r\n USA\r\n \r\n \r\n paleo@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n pointOfContact\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-recon.png\r\n \r\n \r\n Paleoclimatology - Climate Reconstruction\r\n \r\n \r\n PNG\r\n \r\n \r\n \r\n \r\n \r\n \r\n Earth Science > Climate Indicators > Paleoclimate Indicators > Paleoclimate Reconstructions\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n Global Change Master Directory (GCMD) Science Keywords\r\n \r\n \r\n \r\n \r\n 2025\r\n \r\n \r\n revision\r\n \r\n \r\n \r\n \r\n 22\r\n \r\n \r\n \r\n \r\n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\r\n \r\n \r\n GCMD Keyword Forum Page\r\n \r\n \r\n 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\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n custodian\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n earth science > paleoclimate > climate reconstructions\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|ice cores\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|ice cores\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|ice cores|tree ring\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions\r\n \r\n \r\n earth science > paleoclimate > climate reconstructions|tree ring\r\n \r\n \r\n earth science > paleoclimate > reconstructions\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n Global Change Master Directory (GCMD) Science Keywords\r\n \r\n \r\n \r\n \r\n 2025\r\n \r\n \r\n revision\r\n \r\n \r\n \r\n \r\n 22\r\n \r\n \r\n \r\n \r\n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\r\n \r\n \r\n GCMD Keyword Forum Page\r\n \r\n \r\n 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\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n custodian\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Atmospheric and Oceanic Circulation Patterns Reconstruction\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: multiple proxies\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: ring width\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: null\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: ring width\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: ring width\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: ring width\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: null\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: ring width\r\n \r\n \r\n What: age; Material: null\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: multiple proxies\r\n \r\n \r\n What: North Atlantic Oscillation Index; Material: ring width\r\n \r\n \r\n theme\r\n \r\n \r\n \r\n \r\n Paleoenvironmental Standard Terms (PaST) Thesaurus\r\n \r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus\r\n \r\n \r\n PaST Thesaurus\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n publisher\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Ocean > Atlantic Ocean > North Atlantic Ocean > North Atlantic Oscillation > LATITUDE > LONGITUDE\r\n \r\n \r\n place\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce\r\n \r\n \r\n dataCentre\r\n \r\n \r\n \r\n \r\n Global Change Master Directory (GCMD) Data Center Keywords\r\n \r\n \r\n \r\n \r\n 2025\r\n \r\n \r\n revision\r\n \r\n \r\n \r\n \r\n 22\r\n \r\n \r\n \r\n \r\n Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords\r\n \r\n \r\n GCMD Keyword Forum Page\r\n \r\n \r\n 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\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n custodian\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n Cite as: Timm, O.; Ruprecht, E.; Kleppek, S. (2004-07-01): NOAA/WDS Paleoclimatology - Timm et al. 2004 North Atlantic Oscillation Reconstruction. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/xddm-3x35. Accessed [date].\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n 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.\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n 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\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n None\r\n \r\n \r\n \r\n \r\n \r\n \r\n otherRestrictions\r\n \r\n \r\n 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.\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n Scale-Dependent Reconstruction of the NAO Index\r\n \r\n \r\n \r\n \r\n 2004\r\n \r\n \r\n publication\r\n \r\n \r\n \r\n \r\n \r\n \r\n Timm, O., E. Ruprecht, and S. Kleppek\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Journal of Climate\r\n \r\n \r\n publisher\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://doi.org/10.1175/1520-0442(2004)017<2157:SROTNI>2.0.CO;2\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Web Browser\r\n \r\n \r\n Associated Reference published 2004\r\n \r\n \r\n Timm, O., E. Ruprecht, and S. Kleppek, 2004: Scale-Dependent Reconstruction of the NAO Index. Journal of Climate, 17, 2157-2169, 10.1175/1520-0442(2004)017<2157:SROTNI>2.0.CO;2\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n crossReference\r\n \r\n \r\n sciencePaper\r\n \r\n \r\n \r\n \r\n eng; USA\r\n \r\n \r\n geoscientificInformation\r\n \r\n \r\n \r\n \r\n Date Range: 1700 CE to 1978 CE; Date Range: 250 cal yr BP to -28 cal yr BP;\r\n \r\n \r\n \r\n \r\n -50\r\n \r\n \r\n -10\r\n \r\n \r\n 38\r\n \r\n \r\n 65\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n 1700\r\n 1978\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n STUDY NOTES: The data are those shown in figure 4 of Timm et al. (2004). They show the decadal-scale variability in the period range of 8-16 years. The correlation statistics (with the wintertime index of Jones et. al (1997) are given in Table 1 of Timm et al. (2004). Unless there is specific interest in regional climate variablility, it is recommended to use the R1a and R1b reconstructions: R1a is calibrated over the years 1902-1978 to the Jones NAO (Dec-Jan-Feb-Mar) index, and R1b is calibrated over the years 1825-1901 to the Jones NAO (Dec-Jan-Feb-Mar) index. GRa/GRb are regional reconstructions from Greenland icecores. SCa/Scb are regional reconstructions from Scandinavian tree ring widths. BBa/BBb are regional reconstructions from Britain/Belgium tree ring widths. SPa/SPb are regional reconstructions from Spanish tree ring widths. Additional information about the reconstruction and proxy data is presented in the Dissertation: Timm, O., 2003. Decadal to Interdecadal Variability of the North Atlantic Oscillation: A Paleoclimatic Index Reconstruction, Institut fuer Meereskunde an der Universitaet zu Kiel, Germany. https://nbn-resolving.org/urn:nbn:de:gbv:8-diss-9326 \r\nABSTRACT SUPPLIED BY ORIGINATOR: A method is presented to reconstruct decadal variations of the North Atlantic Oscillation (NAO). The spectral characteristics of the NAO on time scales of decades and longer are of particular interest for the understanding of North Atlantic ocean\u2013atmosphere interactions. The reconstruction is based on a transfer model calibration that uses bandpass-filtered time series. The maximum overlap discrete wavelet transform (MODWT) is applied for decomposing the time series variance into different time scales. A total of 43 proxies, including Greenland ice cores and European tree-ring chronologies, are selected and regionally grouped providing four independent reconstructions for the period 1700\u20131978. The mean reconstruction agrees well with two recently published reconstructions during most of the time period. However, there are considerable differences in the earliest part before 1750. Running correlations between the reconstructions indicate that time-dependent relations exist among the different NAO reconstructions. The results suggest that the geographical distribution of proxies strongly affects the reconstruction and could explain some of the apparent discrepancies among the reconstructions recently published in literature. In the early eighteenth century, external forcing (solar, volcanic) seems to mask the NAO signature within the proxies.\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n NOAA National Centers for Environmental Information\r\n \r\n \r\n \r\n \r\n \r\n \r\n ncei.info@noaa.gov\r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/contact\r\n \r\n \r\n NCEI Contact Information\r\n \r\n \r\n Information for contacts at NCEI.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n distributor\r\n \r\n \r\n \r\n \r\n \r\n \r\n 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.\r\n \r\n \r\n Contact NCEI for other distribution options and instructions.\r\n \r\n \r\n \r\n \r\n \r\n \r\n Native Format(s)\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://doi.org/10.25921/xddm-3x35\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Landing Page\r\n \r\n \r\n Metadata Landing Page\r\n \r\n \r\n NCEI landing page with general information and links to access the data.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/access/paleo-search/study/6287\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Web Browser\r\n \r\n \r\n NOAA Study Page\r\n \r\n \r\n Study page with data access information.\r\n \r\n \r\n search\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Information\r\n \r\n \r\n NCEI Climate Reconstruction Page\r\n \r\n \r\n General information for this data type.\r\n \r\n \r\n information\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/timm2004/nao-timm2004-noaa.txt\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Download\r\n \r\n \r\n /contributions_by_author/timm2004/nao-timm2004-noaa.txt\r\n \r\n \r\n Original Data and Full Metadata\r\n \r\n \r\n download\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n asNeeded\r\n \r\n \r\n This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21\r\n \r\n \r\n \r\n","source_transform":{"@type":"dcat:Dataset","accessLevel":"non-public","contactPoint":{"fn":"Not provided - Contact data.gov","hasEmail":"mailto:datagovsupport@gsa.gov"},"describedByType":"application/octet-steam","description":"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 Climate Reconstruction. The data include parameters of climate reconstructions with a geographic location of North Atlantic Ocean. The time period coverage is from 250 to -28 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.","distribution":[{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"NCEI landing page with general information and links to access the data.","downloadURL":"https://doi.org/10.25921/xddm-3x35","mediaType":"placeholder/value","title":"Metadata Landing Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Study page with data access information.","downloadURL":"https://www.ncei.noaa.gov/access/paleo-search/study/6287","mediaType":"placeholder/value","title":"NOAA Study Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"General information for this data type.","downloadURL":"https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction","mediaType":"placeholder/value","title":"NCEI Climate Reconstruction Page"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Original Data and Full Metadata","downloadURL":"https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/timm2004/nao-timm2004-noaa.txt","mediaType":"placeholder/value","title":"/contributions_by_author/timm2004/nao-timm2004-noaa.txt"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Timm, O., E. Ruprecht, and S. Kleppek, 2004: Scale-Dependent Reconstruction of the NAO Index. Journal of Climate, 17, 2157-2169, 10.1175/1520-0442(2004)017<2157:SROTNI>2.0.CO;2","downloadURL":"https://doi.org/10.1175/1520-0442(2004)017<2157:SROTNI>2.0.CO;2","mediaType":"placeholder/value","title":"Associated Reference published 2004"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"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). 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