{"NOAAStudyId":"27150","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":"2019-07-04","dataPublisher":"NOAA","dataType":"SPELEOTHEMS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/speleothem","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-27150.xml","doi":null,"earliestYearBP":11787,"earliestYearCE":-9837,"entryId":"noaa-cave-27150","funding":[{"fundingAgency":"National Natural Science Foundation China","fundingGrant":"41888101, 41731174"},{"fundingAgency":"China Postdoctoral Science Foundation","fundingGrant":"2018M640971"},{"fundingAgency":"Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP), Brazil","fundingGrant":"2017/50085-3"},{"fundingAgency":"Deutsche Forschungsgemeinschaft","fundingGrant":"WA3532/1-1, DE 2398/3-1"}],"investigators":"Ait Brahim, Y.; Wassenburg, J.A.; Sha, L.; Cruz, F.W.; Deininger, M.; Sifeddine, A.; Bouchaou, L.; Spötl, C.; Edwards, R.L.; Cheng, H.","mostRecentYearBP":-58,"mostRecentYearCE":2008,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/27150","originalSource":null,"publication":[{"abstract":null,"author":{"name":"Jasper A. Wassenburg, Stephan Dietrich, Jan Fietzke, Jens Fohlmeister, Klaus Peter Jochum, Denis Scholz, Detlev K. Richter, Abdellah Sabaoui, Christoph Spotl, Gerrit Lohmann, Meinrat O. Andreae, Adrian Immenhauser"},"citation":"Jasper A. Wassenburg, Stephan Dietrich, Jan Fietzke, Jens Fohlmeister, Klaus Peter Jochum, Denis Scholz, Detlev K. Richter, Abdellah Sabaoui, Christoph Spotl, Gerrit Lohmann, Meinrat O. Andreae, Adrian Immenhauser. 2016. Reorganization of the North Atlantic Oscillation during Early Holocene deglaciation. Nature Geoscience. . doi: 10.1038/ngeo2767","edition":null,"identifier":{"id":"10.1038/ngeo2767","type":"doi","url":"http://dx.doi.org/10.1038/ngeo2767"},"issue":null,"journal":"Nature Geoscience","pages":null,"pubRank":"2","pubYear":2016,"reportNumber":null,"title":"Reorganization of the North Atlantic Oscillation during Early Holocene deglaciation","type":"publication","volume":null},{"abstract":"In this study, we present a Holocene rainfall index based on three high-resolution speleothem records from the Western Mediterranean, a region under the influence of the westerly winds belt modulated by the North Atlantic Oscillation (NAO). On centennial to millennial timescales, we show that the North Atlantic ice-rafting events were likely associated with negative NAO-like conditions during the Early Holocene and the Late Holocene. However, our data reveal that this is not clearly the case for the mid-Holocene ice-rafting events, during which we also show evidence of positive NAO-like patterns from other paleo-oceanographic and paleo-atmospheric data. Hence, contradictory mechanisms involving prolonged periods of both north and south shifts of the westerly winds belt (resembling positive and negative NAO-like patterns) might at least partially trigger or amplify the ice-rafting events and the slowdown of the Atlantic Meridional Overturning Circulation.","author":{"name":"Y. Ait Brahim, J.A. Wassenburg, L. Sha, F.W. Cruz, M. Deininger, A. Sifeddine, L. Bouchaou, Christoph Spotl, R.L. Edwards, H. Cheng"},"citation":"Y. Ait Brahim, J.A. Wassenburg, L. Sha, F.W. Cruz, M. Deininger, A. Sifeddine, L. Bouchaou, Christoph Spotl, R.L. Edwards, H. Cheng. 2019. North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems. Geophysical Research Letters. . doi: 10.1029/2019GL082405","edition":null,"identifier":{"id":"10.1029/2019GL082405","type":"doi","url":"http://dx.doi.org/10.1029/2019GL082405"},"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2019,"reportNumber":null,"title":"North Atlantic Ice-Rafting, Ocean and Atmospheric Circulation During the Holocene: Insights From Western Mediterranean Speleothems","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Precipitation Reconstruction"],"site":[{"NOAASiteId":"55788","geo":{"geoType":"Feature","geometry":{"coordinates":["33.84","-4.09"],"type":"POINT"},"properties":{"easternmostLongitude":"-4.09","maxElevationMeters":"1260","minElevationMeters":"1260","northernmostLatitude":"33.84","southernmostLatitude":"33.84","westernmostLongitude":"-4.09"}},"locationName":"Continent>Africa>Northern Africa>Morocco","mappable":"Y","paleoData":[{"NOAADataTableId":"39516","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/grottedepiste2019d18o.txt","linkText":"Grotte de Piste Speleothem GP2 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Piste2019GP2d18O ","dataTableNotes":null,"earliestYear":11415,"earliestYearBP":11415,"earliestYearCE":-9465,"mostRecentYear":2537,"mostRecentYearBP":2537,"mostRecentYearCE":-587,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Grotte de Piste"},{"NOAASiteId":"57794","geo":{"geoType":"Feature","geometry":{"coordinates":["33.95","-4.246"],"type":"POINT"},"properties":{"easternmostLongitude":"-4.246","maxElevationMeters":"1260","minElevationMeters":"1260","northernmostLatitude":"33.95","southernmostLatitude":"33.95","westernmostLongitude":"-4.246"}},"locationName":"Continent>Africa>Northern Africa>Morocco","mappable":"Y","paleoData":[{"NOAADataTableId":"39513","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/chaara2019cha1d18o.txt","linkText":"Chaara Cave Speleothem CHA1 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Chaara2019CHA1d18O","dataTableNotes":null,"earliestYear":11621,"earliestYearBP":11621,"earliestYearCE":-9671,"mostRecentYear":-51,"mostRecentYearBP":-51,"mostRecentYearCE":2001,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"39514","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/chaara2019cha2d18o.txt","linkText":"Chaara Cave Speleothem CHA2 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Chaara2019CHA2d18O","dataTableNotes":null,"earliestYear":9662,"earliestYearBP":9662,"earliestYearCE":-7712,"mostRecentYear":-58,"mostRecentYearBP":-58,"mostRecentYearCE":2008,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"39515","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>precipitation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/chaara2019rain-index.txt","linkText":"Northern Morocco Holocene Rainfall Index","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Chaara2019rain-index","dataTableNotes":null,"earliestYear":11787,"earliestYearBP":11787,"earliestYearCE":-9837,"mostRecentYear":-43,"mostRecentYearBP":-43,"mostRecentYearCE":1993,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Chaara Cave"}],"studyCode":null,"studyName":"Northern Morocco Holocene Speleothem d18O Data and Rainfall Index","studyNotes":"Speleothem oxygen isotope (d18O) data and derived rainfall index for 3 speleothems from Northern Morrocco over the Holocene.","version":"1.0","xmlId":"66914"}