{"NOAAStudyId":"23970","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":"2018-05-03","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-23970.xml","doi":null,"earliestYearBP":1160,"earliestYearCE":790,"entryId":"noaa-cave-23970","funding":[],"investigators":"Ait Brahim, Y.; Cheng, H.; Sifeddine, A.; Wassenburg, J.A.; Cruz, F.W.; Khodri, M.; Sha, L.; Pérez-Zanón, N.; Beraaouz, E.H.; Apaéstegui, J.; Guyot, J.-L.; Jochum, K.P.; Bouchaou, L.","mostRecentYearBP":-3,"mostRecentYearCE":1953,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23970","originalSource":null,"publication":[{"abstract":"This study presents the first well-dated high resolution stable isotope (d18O and d13C) and trace element (Mg and Sr) speleothem records from southwestern Morocco covering the last 1000 yrs. Our records reveal substantial decadal to multidecadal swings between dry and humid periods, consistent with regional paleorecords with prevailing dry conditions during the Medieval Climate Anomaly (MCA), wetter conditions during the second part of the Little Ice Age (LIA), and a trend towards dry conditions during the current warm period. These coherent regional climate signals suggest common climate controls. Statistical analyses indicate that the climate of southwestern Morocco remained under the combined influence of both the North Atlantic Oscillation (NAO) and the Atlantic Multidecadal Oscillation (AMO) over the last millennium. Interestingly, the generally warmer MCA and colder LIA at longer multidecadal timescales probably influenced the regional climate in North Africa through the influence on Sahara Low which weakened and strengthened the mean moisture inflow from the Atlantic Ocean during the MCA and LIA respectively.","author":{"name":"Yassine Ait Brahim, Hai Cheng, Abdelfettah Sifeddine, Jasper A. Wassenburg, Francisco W. Cruz, Myriam Khodri, Lijuan Sha, Núria Pérez-Zanón, El Hassane Beraaouz, James Apaéstegui, Jean-Loup Guyot, Klaus Peter Jochum, Lhoussaine Bouchaou"},"citation":"Yassine Ait Brahim, Hai Cheng, Abdelfettah Sifeddine, Jasper A. Wassenburg, Francisco W. Cruz, Myriam Khodri, Lijuan Sha, Núria Pérez-Zanón, El Hassane Beraaouz, James Apaéstegui, Jean-Loup Guyot, Klaus Peter Jochum, Lhoussaine Bouchaou. 2017. Speleothem records decadal to multidecadal hydroclimate variations in southwestern Morocco during the last millennium. Earth and Planetary Science Letters, 476, 1-10. doi: 10.1016/j.epsl.2017.07.045","edition":null,"identifier":{"id":"10.1016/j.epsl.2017.07.045","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2017.07.045"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"1-10","pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Speleothem records decadal to multidecadal hydroclimate variations in southwestern Morocco during the last millennium","type":"publication","volume":"476"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57635","geo":{"geoType":"Feature","geometry":{"coordinates":["30.71","-9.32"],"type":"POINT"},"properties":{"easternmostLongitude":"-9.32","maxElevationMeters":"1236","minElevationMeters":"1236","northernmostLatitude":"30.71","southernmostLatitude":"30.71","westernmostLongitude":"-9.32"}},"locationName":"Continent>Africa>Northern Africa>Morocco","mappable":"Y","paleoData":[{"NOAADataTableId":"35753","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes","earth science>paleoclimate>speleothems>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/ifoulki2017iso.txt","linkText":"Ifoulki Cave Isotope Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"Depth from stalagmite top","cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Ifoulki2017IFK1iso","dataTableNotes":null,"earliestYear":790,"earliestYearBP":1160,"earliestYearCE":790,"mostRecentYear":1953,"mostRecentYearBP":-3,"mostRecentYearCE":1953,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"35754","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>trace metals"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/africa/ifoulki2017elem.txt","linkText":"Ifoulki Cave Trace Element Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"Depth from stalagmite top","cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>element or single-element molecule>magnesium"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"laser ablation","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>element or single-element molecule>magnesium"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>element or single-element molecule>strontium"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"laser ablation","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>element or single-element molecule>strontium"}]}],"dataTableName":"Ifoulki2017IFK1elem","dataTableNotes":null,"earliestYear":790,"earliestYearBP":1160,"earliestYearCE":790,"mostRecentYear":1939,"mostRecentYearBP":11,"mostRecentYearCE":1939,"species":[],"timeUnit":"AD"}],"siteName":"Ifoulki Cave"}],"studyCode":null,"studyName":"Ifoulki Cave, Morocco 1,000 Year Speleothem Isotope and Trace Element Data","studyNotes":"Stable isotope (d13C, d18O) and trace element (magnesium and strontium) data from stalagmite IFK1, collected in Ifoulki Cave, Western High Atlas Mountains, Morocco, for the past 1,000 years.","version":"1.0","xmlId":"22114"}