{"action":"create","ckan_id":null,"date_created":"Wed, 17 Dec 2025 00:05:33 GMT","date_finished":null,"harvest_job_id":"03463e53-776e-4e34-b523-2acfc1ee971d","harvest_source_id":"b1bd9ece-a304-434d-80e3-1800ab1742db","id":"9cba5b4f-6713-4cb6-b1cc-a72308236b23","identifier":"https://data.noaa.gov/waf/NOAA/NESDIS/ncei/paleo/iso/xml/noaa-recon-6226.xml","parent_identifier":null,"source_hash":"718723805a0520612e8ccfbce88a4c61a91077c783d6add877f32584fcf5447a","source_raw":"\r\n \r\n noaa-recon-6226\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 2025-06-11\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 - Cook et al. 1997 Western US Drought Area Index Reconstruction\r\n \r\n \r\n \r\n \r\n 2002-07-01\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/ctan-9d11\r\n \r\n \r\n \r\n \r\n \r\n \r\n noaa-recon-6226\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 Cook, E.R.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Cook, E.R.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Meko, D.M.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Meko, D.M.\r\n \r\n \r\n author\r\n \r\n \r\n \r\n \r\n \r\n \r\n Stockton, C.W.\r\n \r\n \r\n originator\r\n \r\n \r\n \r\n \r\n \r\n \r\n Stockton, C.W.\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|tree ring with a geographic location of United States Of America. 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|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|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|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 > 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 Palmer Drought Index 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: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: age; Material: null\r\n \r\n \r\n What: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: Palmer Drought Severity Index; Material: ring width\r\n \r\n \r\n What: Palmer Drought Severity 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 Continent > North America > United States Of America > West and Central United States > 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: Cook, E.R.; Meko, D.M.; Stockton, C.W. (2002-07-01): NOAA/WDS Paleoclimatology - Cook et al. 1997 Western US Drought Area Index Reconstruction. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/ctan-9d11. 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 A new assessment of possible solar and lunar forcing of the bi-decadal drought rhythm in the western United States.\r\n \r\n \r\n \r\n \r\n 1997\r\n \r\n \r\n publication\r\n \r\n \r\n \r\n \r\n \r\n \r\n Cook, E.R., Meko, D.M. and Stockton, C.W.\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(1997)010<1343:ANAOPS>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 1997\r\n \r\n \r\n Cook, E.R., Meko, D.M. and Stockton, C.W., 1997: A new assessment of possible solar and lunar forcing of the bi-decadal drought rhythm in the western United States.. Journal of Climate, 10, 1343-1356, 10.1175/1520-0442(1997)010<1343:ANAOPS>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 -125\r\n \r\n \r\n -90\r\n \r\n \r\n 26\r\n \r\n \r\n 50\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: Drought(-) or Wetness(+) Area Index, defined as the the number of gridpoints (out of 154) that exceed PDSI thresholds, as defined in the Original Reference, for a given year. \r\nABSTRACT SUPPLIED BY ORIGINATOR: A new drought area index (DAI) for the United States has been developed based on a high-quality network of drought reconstructions from tree rings. This DAI is remarkably similar to one developed earlier based on much less data and shows strong evidence for a persistent bidecadal drought rhythm in the western United States since 1700. This rhythm has in the past been associated with possible forcing by the 22-yr Hale solar magnetic cycle and the 18.6-yr lunar nodal tidal cycle. The authors make a new assessment of these possible forcings on DAI using different methods of analysis. In so doing, they confirm most of the previous findings. In particular, there is a reasonably strong statistical association between the bidecadal drought area rhythm and years of Hale solar cycle minima and 18.6-yr lunar tidal maxima. The authors also show that the putative solar and lunar effects appear to be interacting to modulate the drought area rhythm, especially since 1800. These results do not eliminate the possibility that the drought area rhythm is, in fact, internally forced by coupled ocean\u2013atmosphere processes. Recent modeling results suggest that unstable ocean\u2013atmosphere interactions in the North Pacific could be responsible for the drought rhythm as well. However, the results presented here do not easily allow for the rejection of the solar and lunar forcing hypotheses either.\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/ctan-9d11\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/6226\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/treering/reconstructions/dai_cook1997-noaa.txt\r\n \r\n \r\n HTTPS\r\n \r\n \r\n Download\r\n \r\n \r\n NCEI Direct Download\r\n \r\n \r\n Direct download links for dataset files.\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|tree ring with a geographic location of United States Of America. 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/ctan-9d11","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/6226","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":"Direct download links for dataset files.","downloadURL":"https://www.ncei.noaa.gov/pub/data/paleo/treering/reconstructions/dai_cook1997-noaa.txt","mediaType":"placeholder/value","title":"NCEI Direct Download"},{"@type":"dcat:Distribution","describedByType":"application/octet-steam","description":"Cook, E.R., Meko, D.M. and Stockton, C.W., 1997: A new assessment of possible solar and lunar forcing of the bi-decadal drought rhythm in the western United States.. Journal of Climate, 10, 1343-1356, 10.1175/1520-0442(1997)010<1343:ANAOPS>2.0.CO;2","downloadURL":"https://doi.org/10.1175/1520-0442(1997)010<1343:ANAOPS>2.0.CO;2","mediaType":"placeholder/value","title":"Associated Reference published 1997"},{"@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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