{"NOAAStudyId":"22582","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":"2017-05-19","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-22582.xml","doi":null,"earliestYearBP":1372,"earliestYearCE":578,"entryId":"noaa-lake-22582","funding":[],"investigators":"Pla, S.; Catalan, J.","mostRecentYearBP":-44,"mostRecentYearCE":1994,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22582","originalSource":null,"publication":[{"abstract":"In the last decade, much effort was dedicated to the reconstruction of past climate at high temporal resolution. Here, we show the suitability of chrysophyte cysts from lake sediments for revealing continental climate variability when used in sensitive sites, such as those in high mountains. We demonstrate that altitude is a main factor influencing the present distribution of chrysophytes and develop a transfer function to evaluate the local “altitude anomaly” on a lake site throughout time. Based on our knowledge of chrysophyte ecology, the altitude anomalies are interpreted as winter/spring climate signatures. The method was applied to a Holocene record from a lake in the Pyrenees showing submillennial climatic variability in this northwestern Mediterranean zone. A warming trend was present from the early Holocene to 4 kyear BP. Comparison with pollen-based reconstructions of summer temperatures denoted a contrasting decrease in continentality between the two parts of the Holocene. Oscillations of 1 cycle per ca. 2,000 years appeared throughout the record. The warmest Holocene winters were recorded during the Medieval Warm Period at ca. AD 900 and 450 and the Roman Warm Period (2.7–2.4 kyear BP). Winters in the period AD 1,050–1,175 were inferred to be as cold as in the Little Ice Age. The period between 3 and 7 kyear BP showed lower intensity in the fluctuations than in early and late Holocene. The cold event, 8,200 years ago, appeared embedded in a warm fluctuation. Another cold fluctuation was recorded around 9 kyear BP, which is in agreement with Irish and Greenland records.","author":{"name":"Pla, Sergi and Jordi Catalan"},"citation":"Pla, Sergi and Jordi Catalan. 2004. Chrysophyte cysts from lake sediments reveal the submillennial winter/spring climate variability in the northwestern Mediterranean region throughout the Holocene. Climate Dynamics, 24, 263-278. doi: 10.1007/s00382-004-0482-1","edition":null,"identifier":{"id":"10.1007/s00382-004-0482-1","type":"doi","url":"http://dx.doi.org/10.1007/s00382-004-0482-1"},"issue":null,"journal":"Climate Dynamics","pages":"263-278","pubRank":"1","pubYear":2004,"reportNumber":null,"title":"Chrysophyte cysts from lake sediments reveal the submillennial winter/spring climate variability in the northwestern Mediterranean region throughout the Holocene","type":"publication","volume":"24"}],"reconstruction":"Y","scienceKeywords":["Air Temperature Reconstruction"],"site":[{"NOAASiteId":"57376","geo":{"geoType":"Feature","geometry":{"coordinates":["42.6425",".770278"],"type":"POINT"},"properties":{"easternmostLongitude":"0.770278","maxElevationMeters":"2240","minElevationMeters":"2240","northernmostLatitude":"42.6425","southernmostLatitude":"42.6425","westernmostLongitude":"0.770278"}},"locationName":"Continent>Europe>Southern Europe>Spain","mappable":"Y","paleoData":[{"NOAADataTableId":"33568","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/spain/pla2004-pyrenee.txt","linkText":"Lake Redon Temperature Reconstruction","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","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":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","cvDetail":"anomalized","cvError":"unspecified margin of error","cvFormat":"Numeric","cvMaterial":"reconstruction material>biological assemblage>chrysophyte assemblage","cvMethod":"modern analogue technique","cvSeasonality":null,"cvShortName":null,"cvUnit":"degree 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technique","cvSeasonality":null,"cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature"}]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Eur-CentralandEasternPyrenees.Pla.2004.txt","linkText":"PAGES 2k v2 Original Contribution","urlDescription":"NOAA Template File","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>reconstruction"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Eur-CentralandEasternPyrenees.Pla.2004.lpd","linkText":"PAGES 2k v2 Original Contribution","urlDescription":"Linked Paleo Data (LiPD) File","variables":[]}],"dataTableName":"Lake Redon Temp Pla2004","dataTableNotes":null,"earliestYear":578,"earliestYearBP":1372,"earliestYearCE":578,"mostRecentYear":1994,"mostRecentYearBP":-44,"mostRecentYearCE":1994,"species":[],"timeUnit":"AD"}],"siteName":"Lake Redon"}],"studyCode":null,"studyName":"Lake Radon, Pyrenees Temperature Reconstruction from Chrysophyte cysts covering 578-1994 CE","studyNotes":null,"version":"1.0","xmlId":"20759"}