noaa-lake-24392 Eastern Finland 120 Year Varve Thickness Data Saarni, S.; Lensu, A.; Tammelin, M.; Haltia, E.; Saarinen, T. Eastern Finland 120 Year Varve Thickness Data 2018-06-14 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/24392 Investigator S. Saarni Investigator A. Lensu Investigator M. Tammelin Investigator E. Haltia Investigator T. Saarinen earth science paleoclimate paleolimnology layer thickness,null,null,millimeter,null,paleolimnology,null,null,N,spring lamina thickness; accumulation of minerogenic clasts earth science paleoclimate paleolimnology depth,null,null,millimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology age,null,null,year Common Era,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology varve thickness,null,null,millimeter,null,paleolimnology,null,null,N,total varve thickness earth science paleoclimate paleolimnology physical properties geoscientificInformation 1880 AD 2000 AD 70 cal yr BP -50 cal yr BP Complete 63.308 63.483 26.657 27.164 96 108 Continent Europe Northern Europe Scandanavia Finland Lake Kantele>LATITUDE 63.483>LONGITUDE 26.657 Continent Europe Northern Europe Scandanavia Finland Lake Linnanlampi>LATITUDE 63.308>LONGITUDE 27.164 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Saija Saarni, Anssi Lensu, Mira Tammelin, Eeva Haltia, Timo Saarinen 2017 GFF 139 4 314-326 10.1080/11035897.2017.1389984 https://www.tandfonline.com/doi/full/10.1080/11035897.2017.1389984

Clastic-biogenic varves are widely used for reconstructing past climate: in boreal environments, the accumulation of minerogenic clasts on the lake floor is generally considered a proxy for past variations in spring floods reflecting previous winter conditions. However, the physical mechanisms behind this winter climate sensitivity and the influence of catchment type on the varve formation are not fully investigated. Here, we present a winter climate record inferred from the clastic laminae of three lakes located on the region of fine-grained tills in Eastern Finland spanning from AD 1890 to 1990. The minerogenic varve data are compared with instrumental meteorological and hydrological time series in order to investigate the physical link between winter and spring climate and minerogenic matter accumulation. Our analyses reveal that the climate-catchment mechanisms operating in the region of fine-grained tills differ crucially from previously described climate catchment interactions on sand moraine-dominated catchments in Finland, where the maximum river discharge in spring controls the clastic lamina formation. However, in contrast to earlier boreal varve records from Central Finland, the clastic lamina formation in the studied region correlates negatively with spring temperatures and winter precipitation. This could be an artefact of varying catchment dynamics but also related to the regional climate. The lakes surrounded by catchments characterized by fine-grained tills are more sensitive to cold and dry winters. The differences in the sensitivity of varve characteristics to climate, highlights the importance of understanding the catchment dynamics in detail in order to better understand climatic forcing. STUDY NOTES: Sediment varve thickness record from Lake Kantele and Lake Linnanlampi in eastern Finland.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/kantele2017varve.txt NOAA Template File; Lake Kantele Varve Thickness Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/europe/finland/linnanlampi2017varve.txt NOAA Template File; Lake Linnanlampi Varve Thickness Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11