{"xmlId":"20315","NOAAStudyId":"22275","studyName":"Laguna de Ubaque, Colombia 4,700 Year Sediment Geochemical Data","doi":"https://doi.org/10.25921/p7d2-dg59","uuid":"6b142e1e-69e2-4dff-8593-fe0f3eb0bb6c","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":"PALEOLIMNOLOGY","investigators":"Bird, B.W.; Rudloff, O.; Escobar, J.; Gilhooly, W.P.; Correa-Metrio, A.; Vélez, M.; Polissar, P.J.","investigatorDetails":[{"firstName":"Broxton","lastName":"Bird","initials":"B.W.","orcId":"0000-0003-2665-2528"},{"firstName":"Owen","lastName":"Rudloff","initials":"O.","orcId":null},{"firstName":"Jaime","lastName":"Escobar","initials":"J.","orcId":"0000-0001-7775-7130"},{"firstName":"William","lastName":"Gilhooly","initials":"W.P.","orcId":"0000-0002-5931-5571"},{"firstName":"Alexander","lastName":"Correa-Metrio","initials":"A.","orcId":"0000-0002-1278-2746"},{"firstName":"Maria","lastName":"Vélez","initials":"M.","orcId":"0000-0003-2990-6343"},{"firstName":"Pratigya","lastName":"Polissar","initials":"P.J.","orcId":"0000-0001-5483-1625"}],"version":"1.0","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"EAR 1445649, GEO 1128040"},{"fundingAgency":"Indiana University-Purdue University, Indianapolis","fundingGrant":"International Development Fund, Research Support Funds Grant"},{"fundingAgency":"Inter-American Institute for Global Change Research","fundingGrant":"CRN 3038"}],"studyNotes":"Sediment geochemical and physical properties data from Laguna de Ubaque, Colombia for the past 4,700 years. Provided Keywords: Paleolimnology, Sedimentology, Sediment geochemistry, Middle and Late Holocene, Colombia, Paleoclimate","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/22275","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-22275.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-lake-22275.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/lake","studyCode":null,"scienceKeywords":null,"reconstruction":"N","contributionDate":"2017-07-25","entryId":"noaa-lake-22275","earliestYearBP":4653,"mostRecentYearBP":-65,"earliestYearCE":-2703,"mostRecentYearCE":2015,"publication":[{"author":{"name":"Broxton W. Bird, Owen Rudloff, Jaime Escobar, William P. Gilhooly III, Alex Correa-Metrio, Maria Vélez, Pratigya J. Polissar"},"pubYear":2018,"title":"Paleoclimate support for a persistent dry island effect in the Colombian Andes during the last 4700 years","journal":"The Holocene","volume":"28","edition":null,"issue":"2","pages":"217228","reportNumber":null,"citation":"Broxton W. Bird, Owen Rudloff, Jaime Escobar, William P. Gilhooly III, Alex Correa-Metrio, Maria Vélez, Pratigya J. Polissar. 2018. Paleoclimate support for a persistent dry island effect in the Colombian Andes during the last 4700 years. The Holocene, 28(2), 217228. doi: 10.1177/0959683617721324","type":"publication","identifier":{"type":"doi","id":"10.1177/0959683617721324","url":"http://dx.doi.org/10.1177/0959683617721324"},"abstract":"We investigated middle and late Holocene hydroclimate patterns in the Colombian Andes using indicators of watershed erosion (lithic abundance), precipitation intensity (% silt), lake-level variability (organic carbon and nitrogen, % sand, and diatoms), and fire frequency (fossil charcoal) from a ~4700-year-long sediment archive from Laguna de Ubaque, a small sub-alpine lake on the eastern flank of the eastern Colombian Andes. Our results indicate reduced precipitation, low lake levels and increased fire occurrence at Ubaque between 4700 and 3500 cal yr BP (hereafter BP). Precipitation increased and lake levels rose abruptly while fire occurrence decreased between 3500 and 2100 BP, with the exception of a 300-year dry phase between 2800 and 2500 BP. Although wetter than the 4700-3500 BP interval, precipitation decreased, lake levels fell, and fire occurrence increased after 2100 BP, but with high-frequency variability. Comparison of the Ubaque results with other Colombian paleoclimate records (e.g., Lakes Fúquene and La Cocha) supports an antiphase pattern of precipitation between the high/interior Andes and frontal slope sites. This spatial pattern of variability is consistent with modern responses to changes in terrestrial atmospheric convection associated with the so-called dry island effect. Further comparison with paleoclimate records from Venezuela suggest that the millennial trend toward increasing frontal slope precipitation is consistent with orbitally induced increases in Andean atmospheric convection. Sub-orbital dry island-like hydroclimate variability suggests other mechanisms that affect Northern Hemisphere convection may act to enhance or diminish this effect on centennial and shorter timescales.","pubRank":"1"}],"site":[{"NOAASiteId":"57274","siteName":"Laguna de Ubaque","siteCode":null,"mappable":"Y","locationName":"Continent>South America>Colombia","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["4.499","-73.935"]},"properties":{"southernmostLatitude":"4.499","northernmostLatitude":"4.499","westernmostLongitude":"-73.935","easternmostLongitude":"-73.935","minElevationMeters":"2070","maxElevationMeters":"2070"}},"paleoData":[{"dataTableName":"Ubaque2017geochem","NOAADataTableId":"33389","earliestYear":4653,"mostRecentYear":-65,"timeUnit":"cal yr 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