{"NOAAStudyId":"5974","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2006-06-12","dataPublisher":"NOAA","dataType":"POLLEN","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/pollen","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-pollen-5974.xml","doi":null,"earliestYearBP":null,"earliestYearCE":null,"entryId":"noaa-pollen-5974","funding":[],"investigators":"Williams, J.W.; Shuman, B.N.; Bartlein, P.J.; Whitmore, J.; Gajewski, K.J.; Sawada, M.C.; Minckley, T.; Shafer, S.; Viau, A.E.; Webb, T.; Anderson, P.M.; Brubaker, L.B.; Whitlock, C.; Davis, O.K.","mostRecentYearBP":null,"mostRecentYearCE":null,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/5974","originalSource":null,"publication":[],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"1000000","geo":{"geoType":"Feature","geometry":{"coordinates":["25","70","-170","-50"],"type":"POLYGON"},"properties":{"easternmostLongitude":"-50","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"70","southernmostLatitude":"25","westernmostLongitude":"-170"}},"locationName":"Continent>North America","mappable":"N","paleoData":[{"NOAADataTableId":"Unspecified","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>pollen"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pollen/atlas/","linkText":"Pollen Atlas PDF Format Files","urlDescription":"Data Folder","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>pollen"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pollen/atlas/pollen-atlas.txt","linkText":"Pollen Atlas Readme File","urlDescription":"Data Description","variables":[]}],"dataTableName":null,"dataTableNotes":null,"earliestYear":null,"earliestYearBP":null,"earliestYearCE":null,"mostRecentYear":null,"mostRecentYearBP":null,"mostRecentYearCE":null,"species":[],"timeUnit":null}],"siteName":"North America"}],"studyCode":null,"studyName":"Williams et al. 2006 North American Pollen Atlas","studyNotes":"An atlas of the geographic, climatic, and vegetational distributions for \nmajor and minor pollen and spore types from all of North America. \nThe atlas is based upon a recent compilation of surface pollen samples \nthat includes 4549 samples, 134 pollen and spore types (hereafter referred to \nas pollen types), and climatic and vegetational attributes at all locations.\nThe atlas is a series of visualizations of pollen-climate and pollen-vegetation \nrelationships for 95 individual pollen types and 11 summed pollen types.\nEach pollen type is represented by five kinds of maps and plots, \nspread across two pages.  \n\nFirst, the percent abundance of each pollen type across North America is mapped. \n \nSecond, plots of pollen percentages against a single climatic or bioclimatic variable \n(sensu Prentice et al. 1992) are employed to indicate the existence of unimodal or \nmultimodal distributions in the pollen abundances, threshold climatic values where \npollen abundances drop off steeply, and the existence of climatic envelopes.  \nPlotted climatic variables include mean January temperature, mean July temperature, \nand total annual precipitation. Plotted bioclimatic variables include growing degree \ndays on a 5C base, mean temperature of the coldest month of the year, and the ratio \nof actual to potential evaporation, which is an index for the amount of moisture \navailable for plant uptake. \n\nThird, plots of pollen percentages versus multiple climatic variables illustrate the \noperation of multiple environmental controls upon pollen and plant distributions \n(Bartlein et al. 1984, Anderson et al. 1991, Prentice et al. 1991, Webb et al. 1993a, \nThompson et al. 1999b). \n\nFourth, ternary diagrams show pollen abundances relative to the percent areal cover of \nbroadleaf woody, needleleaf woody, and open/unforested vegetation at the pollen sample \nlocations. \n\nFifth, box plots show the distribution of pollen percentages within vegetation formations. \n\nORIGINAL REFERENCE: \nWilliams, J.W., B. Shuman, P.J. Bartlein, J. Whitmore, K. Gajewski, \nM. Sawada, T. Minckley, S. Shafer, A.E. Viau, T. Webb, III, P.M. Anderson, \nL.B. Brubaker, C. Whitlock, and O.K. Davis. 2006. \nAn Atlas of Pollen-Vegetation-Climate Relationships for the United \nStates and Canada. \nAmerican Association of Stratigraphic Palynologists Foundation, \nDallas, TX. 293 pp. ","version":"1.0","xmlId":"3042"}