{"xmlId":"2208","NOAAStudyId":"6181","studyName":"Mt. Logan - 7,400 Year Glaciochemical Data","doi":"https://doi.org/10.25921/m31r-yx56","uuid":"41099c1f-ba01-4e8e-8adf-14f3cfdb9f4c","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"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."},"dataType":"ICE CORES","investigators":"Osterberg, E.; Mayewski, P.A.; Kreutz, K.J.; Fisher, D.A.; Handley, M.; Sneed, S.; Zdanowicz, C.M.; Zheng, J.; Demuth, M.; Waskiewicz, M.; Bourgeois, J.C.","investigatorDetails":[{"firstName":"Erich","lastName":"Osterberg","initials":"E.","orcId":"0000-0002-0675-1230"},{"firstName":"Paul","lastName":"Mayewski","initials":"P.A.","orcId":"0000-0002-3360-763X"},{"firstName":"Karl","lastName":"Kreutz","initials":"K.J.","orcId":"0000-0003-1881-2341"},{"firstName":"David","lastName":"Fisher","initials":"D.A.","orcId":null},{"firstName":"Michael","lastName":"Handley","initials":"M.","orcId":"0000-0001-6712-9843"},{"firstName":"Sharon","lastName":"Sneed","initials":"S.","orcId":"0000-0002-2577-8025"},{"firstName":"Christian","lastName":"Zdanowicz","initials":"C.M.","orcId":"0000-0002-1045-5063"},{"firstName":"Jiancheng","lastName":"Zheng","initials":"J.","orcId":null},{"firstName":"Michael","lastName":"Demuth","initials":"M.","orcId":null},{"firstName":null,"lastName":"Waskiewicz","initials":"M.","orcId":null},{"firstName":"Jocelyne","lastName":"Bourgeois","initials":"J.C.","orcId":null}],"version":"1.0","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"NSF-0240878;  ARC-0612400"},{"fundingAgency":"University of Alaska, Fairbanks","fundingGrant":"International Arctic Research Center"},{"fundingAgency":"Natural Resources Canada","fundingGrant":null},{"fundingAgency":"US National Oceanic and Atmospheric Administration (NOAA)","fundingGrant":"NA04OAR4600179; NA05OAR43111109; NA06OAR4310206"}],"studyNotes":"High resolution (1 year, 2 year, and 25 year) Pb, SO42-, Sr, Cs, La, Ce, U, Al, and Fe concentration data, Pb flux data, and Pb crustal enrichment factor data from the Mt. Logan PR Col ice core. Average, maximum and minimum enrichment factors (EF) represent the average, maximum and minimum Pb crustal EF based on seven crustal reference elements (Sr, Cs, La, Ce, U, Al, Fe). Average upper continental crust reference concentrations are those of Wedepohl, 1995. Core location: Prospector-Russell (PR) Col, summit plateau of Mt. Logan, Yukon Territory, Canada: 60.58°N, 140.50°W; 5300 m elev., 186 m long ice core","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/6181","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-6181.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-icecore-6181.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/ice-core","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2009-12-11","entryId":"noaa-icecore-6181","earliestYearBP":7413,"mostRecentYearBP":-48,"earliestYearCE":-5463,"mostRecentYearCE":1998,"publication":[{"author":{"name":"Osterberg, E., P. Mayewski, K. Kreutz, D. Fisher, M. Handley, S. Sneed, C. Zdanowicz, J. Zheng, M. Demuth, M. Waskiewicz, and J. Bourgeois"},"pubYear":2008,"title":"Ice core record of rising lead pollution in the North Pacific atmosphere","journal":"Geophysical Research Letters","volume":"35","edition":null,"issue":"5","pages":null,"reportNumber":"L05810","citation":"Osterberg, E., P. Mayewski, K. Kreutz, D. Fisher, M. Handley, S. Sneed, C. Zdanowicz, J. Zheng, M. Demuth, M. Waskiewicz, and J. Bourgeois. 2008. Ice core record of rising lead pollution in the North Pacific atmosphere. Geophysical Research Letters, 35(5), L05810. doi: 10.1029/2007GL032680","type":"publication","identifier":{"type":"doi","id":"10.1029/2007GL032680","url":"http://dx.doi.org/10.1029/2007GL032680"},"abstract":"A high-resolution, 8000 year-long ice core record from the Mt. Logan summit plateau (5300 m asl) reveals the initiation of trans-Pacific lead (Pb) pollution by ca. 1730, and a >10-fold increase in Pb concentration (19811998 mean = 68.9 ng/l) above natural background (5.6 ng/l) attributed to rising anthropogenic Pb emissions from Asia. The largest rise in North Pacific Pb pollution from 19701998 (end of record) is contemporaneous with a decrease in Eurasian and North American Pb pollution as documented in ice core records from Greenland, Devon Island, and the European Alps. The distinct Pb pollution history in the North Pacific is interpreted to result from the later industrialization and less stringent abatement measures in Asia compared to North America and Eurasia. The Mt. Logan record shows evidence for both a rising Pb emissions signal from Asia and a trans-Pacific transport efficiency signal related to the strength of the Aleutian Low.","pubRank":"1"}],"site":[{"NOAASiteId":"19994","siteName":"Mt. 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