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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":"Thompson, L.G.; Mosley-Thompson, E.","investigatorDetails":[{"firstName":"Lonnie","lastName":"Thompson","initials":"L.G.","orcId":"0000-0001-5371-2579"},{"firstName":"Ellen","lastName":"Mosley-Thompson","initials":"E.","orcId":"0000-0002-9665-3705"}],"version":"1.0","funding":[],"studyNotes":null,"onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/2440","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-2440.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-icecore-2440.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/ice-core","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"1990-11-01","entryId":"noaa-icecore-2440","earliestYearBP":null,"mostRecentYearBP":null,"earliestYearCE":null,"mostRecentYearCE":null,"publication":[{"author":{"name":"Thompson, L.G., and E. Mosley-Thompson"},"pubYear":1981,"title":"Temporal variability of microparticle properties in polar ice sheets","journal":"Journal of Volcanology and Geothermal Research","volume":"11","edition":null,"issue":"1","pages":"11-27","reportNumber":null,"citation":"Thompson, L.G., and E. Mosley-Thompson. 1981. Temporal variability of microparticle properties in polar ice sheets. Journal of Volcanology and Geothermal Research, 11(1), 11-27. doi: 10.1016/0377-0273(81)90072-X","type":"publication","identifier":{"type":"doi","id":"10.1016/0377-0273(81)90072-X","url":"http://dx.doi.org/10.1016/0377-0273(81)90072-X"},"abstract":"Four recent ice core studies reveal a consistently recurring temporal correlation between increased microparticle concentrations and lower global temperatures (more negative 13O/16O ratios). A continuous 900-year record of particle deposition from the 101-m South Pole core was obtained by analyzing 6218 samples. The concentration of insoluble particles with \r\n increases substantially between A.D. 1450 and 1850, a period of slightly reduced global temperatures encompassing the latest Neoglacial or Little Ice Age. There is evidence suggesting that some of the additional material may be volcanic, although further substantiation is required.\r\n\r\nThe microparticle analyses of selected sections from three deep cores coupled with the respective Ã18O measurements reveal that in all three cores the last glacial or Late Wisconsin ice contained great quantities of microparticles. The ratio of the average microparticle concentration in Wisconsin sections to that in Holocene sections is 6 for the 905-m Dome C, Antarctica core, 3 for the 2164-m Byrd Station, Antarctica core and 12 for the 1387-m Camp Century, Greenland core. Microparticle increases of this magnitude can not be accounted for merely by a reduction in net accumulation. These data suggest that the global atmosphere was heavily laden with suspended particulates near the end of the last major glaciation.","pubRank":"1"}],"site":[{"NOAASiteId":"19984","siteName":"Camp Century","siteCode":null,"mappable":"Y","locationName":"Continent>North America>Greenland","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["77.17","-61.13"]},"properties":{"southernmostLatitude":"77.17","northernmostLatitude":"77.17","westernmostLongitude":"-61.13","easternmostLongitude":"-61.13","minElevationMeters":"1885","maxElevationMeters":"1885"}},"paleoData":[{"dataTableName":"CampCentury2 Thompson1981","NOAADataTableId":"38387","earliestYear":null,"mostRecentYear":null,"timeUnit":null,"earliestYearBP":null,"mostRecentYearBP":null,"earliestYearCE":null,"mostRecentYearCE":null,"coreLengthMeters":null,"dataTableNotes":"See readme for data description: 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